Signaling of directions of coverage radio resource control (RRC) configurations

Abstract

The UE receives a first TDD UL DL slot format configuration in the RRC signaling, the first TDD UL DL slot format configuration indicating types of communications for a symbol set or slot set, the types of communications including one or more of an uplink, a downlink, or a flexible link. The UE also receives an indication of an adjusted type of at least one symbol in the set of symbols or at least one slot in the set of slots. Adjusting the at least one symbol of the type of the communication is a downlink symbol or an uplink symbol configured based on the first time TDD UL DL slot format, or adjusting the at least one slot of the type of the communication is a downlink slot or an uplink slot configured based on the first time TDD UL DL slot format.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. patent application serial number 17 / 935,072, entitled “SIGNALING TO OVERRIDE RADIO RESOURCE CONTROL (RRC) CONFIGUREDDIRECTION” and filed on September 23, 2022, which is expressly incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates generally to communication systems and, more particularly, to wireless communications including signaling covering directions of Radio Resource Control (RRC) configurations. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcast. 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 a common protocol that enables different wireless devices to communicate at city, country, region, and even global levels. An example telecommunication standard is 5G New Radio (NR). 5GNR is part of the continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)) and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Certain aspects of 5G NR may be based on 4G Long Term Evolution (LTE) standards. It is necessary to further improve 5G NR technology. In addition, these improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies. Summary of the invention

[0006] A simplified summary of one or more aspects is presented below to provide a basic understanding of these aspects. This summary is not an extensive review of all contemplated aspects. This summary neither identifies the key or important elements of all aspects, nor describes 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 a more detailed description presented later.

[0007] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus for wireless communication at a user equipment (UE) are provided. The apparatus may include: a memory; and at least one processor, the at least one processor coupled to the memory and configured to: receive a first time division duplex (TDD) uplink (UL) downlink (DL) slot format configuration in a radio resource control (RRC) signaling, the first TDD UL DL slot format configuration indicating the type of communication of a symbol set or a slot set, the types of communication including one or more of uplink, downlink, or flexible link; and receive an indication of an adjusted type of at least one symbol in the symbol set or at least one slot in the slot set, wherein the at least one symbol for adjusting the type of the communication is a downlink symbol (D symbol) or an uplink symbol (U symbol) based on the first time TDD UL DL slot format configuration, or the at least one slot for adjusting the type of the communication is a downlink slot (D slot) or an uplink slot (U slot) based on the first time TDD UL DL slot format configuration.

[0008] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus for wireless communication at a network entity are provided. The apparatus may include: a memory; and at least one processor, the at least one processor being coupled to the memory and configured to: send a first TDD UL DL slot format configuration in RRC signaling, the first TDD UL DL slot format configuration indicating the type of communication of a symbol set or a slot set, the types of communication including one or more of uplink, downlink, or flexible link; and send an indication of an adjusted type of at least one symbol in the symbol set or at least one slot in the slot set, wherein the at least one symbol for adjusting the type of the communication is a downlink symbol (D symbol) or an uplink symbol (U symbol) based on the first time TDD UL DL slot format configuration, or the at least one slot for adjusting the type of the communication is a downlink slot (D slot) or an uplink slot (U slot) based on the first time TDD UL DL slot format configuration.

[0009] To achieve the aforementioned and related purposes, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail some exemplary features of one or more aspects. However, these features indicate only some of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0011] Figure 2A is a diagram illustrating an example of a first frame according to various aspects of the present disclosure.

[0012] Figure 2B is a diagram illustrating an example of downlink (DL) channels within a subframe according to various aspects of the present disclosure.

[0013] Figure 2C is a diagram illustrating an example of a second frame according to various aspects of the present disclosure.

[0014] Figure 2D is a diagram illustrating an example of uplink (UL) channels within a subframe according to various aspects of the present disclosure.

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

[0016] Figure 4A , Figure 4B , Figure 4C and Figure 4D Various modes of full-duplex communication are illustrated.

[0017] Figure 5A Examples of in-band full-duplex (IBFD) resources and sub-band full-duplex (SBFD) resources are illustrated.

[0018] Figure 5B An example of a device using portions of an antenna panel for full-duplex communication is illustrated.

[0019] Fig. 6A , Figure 6B and Figure 6C is a diagram illustrating an overlay RRC configuration direction according to various aspects of the present disclosure.

[0020] Figure 7 is a call flow diagram illustrating a method of wireless communication according to various aspects of the present disclosure.

[0021] Figure 8 is a first flow chart illustrating a method of wireless communication at a UE according to various aspects of the present disclosure.

[0022] Fig. 9 is a second flow chart illustrating a method of performing wireless communication at a UE according to various aspects of the present disclosure.

[0023] Fig.10 is a first flow chart illustrating a method of wireless communication at a network entity according to various aspects of the present disclosure.

[0024] Fig.11 is a first flow chart illustrating a method of wireless communication at a network entity according to various aspects of the present disclosure.

[0025] Fig.12 are diagrams illustrating examples of hardware implementations for example apparatuses and / or network entities.

[0026] Fig.13 is a diagram illustrating an example of a hardware implementation for an example network entity. DETAILED DESCRIPTION

[0027] For power saving purposes, some commercial networks may not have or may have only a small number of flexible (F) symbols or time slots configured by radio resource control (RRC) in their time slot formats. However, the downlink or uplink symbols (or time slots) configured by RRC may need to be distinguished between sub-band full-duplex (SBFD) aware UEs. The aspects given in the present application provide methods and devices for covering the direction of symbols or sets configured by RRC to improve wireless communication efficiency. In some aspects, a UE may receive a first time division duplex (TDD) uplink (UL) downlink (DL) time slot format configuration in radio resource control (RRC) signaling. The first TDD UL DL time slot format configuration may indicate the communication type of a symbol set or a time slot set. The UE may also receive an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set. The at least one symbol may be a downlink symbol (D symbol) or an uplink symbol (U symbol) configured based on a first time TDD UL DL time slot format, and the at least one time slot may be a downlink time slot (D time slot) or an uplink time slot (U time slot) configured based on a first time TDD UL DL time slot format. The method enables flexible utilization of transmission resources in wireless communication according to actual operation requirements. Therefore, the efficiency of wireless communication is improved.

[0028] The specific embodiments described below in conjunction with the accompanying drawings are descriptions of various configurations and do not represent the only configurations in which the concepts described herein can be practiced. In order to provide a thorough understanding of the various concepts, the specific embodiments include specific details. However, these concepts can be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid blurring such concepts.

[0029] Several aspects of telecommunication systems are presented with reference to various apparatuses and methods. These apparatuses and methods are 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 may be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0030] As an example, an element, or any part of an element, or any combination of elements can be implemented as a "processing system", which 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 chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic components, discrete hardware circuits, and other suitable hardware configured to perform various functionalities described throughout the present disclosure. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terms, software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.

[0031] Thus, in one or more example aspects, specific implementations and / or use cases, the described functionality may be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality may be stored or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media may be any available media that can be accessed by a computer. As an example, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of these types of computer-readable media, or any other medium that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0032] Although various aspects, specific implementations and / or use cases are described in this application by the illustration of some examples, additional or different aspects, specific implementations and use cases may be generated in many different arrangements and scenarios. The various aspects, specific implementations and / or use cases described herein can be implemented across many different platform types, devices, systems, shapes, sizes and packaging arrangements. For example, various aspects, specific implementations and / or use cases can be generated via integrated chip specific implementations and other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / purchase equipment, medical equipment, artificial intelligence (AI) enabled devices, etc.). Although some examples may or may not be specifically for use cases or applications, the described examples may have a wide range of applicability. Various aspects, specific implementations and / or use cases can be in the range from chip-level or modular components to non-modular, non-chip-level specific implementations, and further to the range of aggregated, distributed or original equipment manufacturer (OEM) devices or systems in conjunction with one or more technologies herein. In some actual settings, the equipment combined with the various aspects and features described may also include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily include multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.) The various techniques described herein can be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc., of various sizes, shapes, and configurations.

[0033] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or constituent parts in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element or a network equipment (such as a base station (BS), or one or more units (or one or more components) that perform base station functionality can be implemented in an aggregated or decomposed architecture. For example, a BS (such as a Node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a transmit receive point (TRP) or a cell, etc.) can be implemented as an aggregated base station (also referred to as an independent BS or a monolithic BS) or a decomposed base station.

[0034] A converged base station may be configured to utilize a radio protocol stack physically or logically integrated within a single RAN node. A decomposed base station may be configured to utilize a protocol stack physically or logically distributed between two or more units, such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed in one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a RU may be implemented as a virtual unit, i.e., a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0035] Base station operation or network design may take into account the aggregated nature of base station functionality. For example, a disaggregated base station may be used in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (network configuration such as that initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Decomposition may include distributing functionality across two or more units at various physical locations, as well as virtually distributing functionality of at least one unit, which may enable flexibility in network design. Individual units of a disaggregated base station or disaggregated RAN architecture may be configured for wired or wireless communication with at least one other unit.

[0036] Figure 1 1 is a diagram 100 illustrating an example of a wireless communication system and an access network. The illustrated wireless communication system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that may communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated base station units, such as a near real-time (near RT) RAN intelligent controller (RIC) 125 via an E2 link, or a non-real-time (non-RT) RIC 115 associated with a service management and orchestration (SMO) framework 105, or both. The CU 110 may communicate with one or more DUs 130 via corresponding midhaul links, such as an F1 interface. The DU 130 may communicate with one or more RUs 140 via corresponding fronthaul links. The RU 140 may communicate with corresponding UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 140.

[0037] Each of these units (i.e., CU 110, DU 130, RU 140, and near-RT RIC 125, non-RT RIC 115, and SMO framework 105) may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of these units or an associated processor or controller that provides instructions to the communication interface of these units may be configured to communicate with one or more of the other units via a transmission medium. For example, these units may include a wired interface configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium. Additionally, these units may include a wireless interface that may include a receiver, transmitter, or transceiver (such as an RF transceiver) configured to receive and / or transmit signals to one or more of the other units via a wireless transmission medium.

[0038] In some aspects, CU 110 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 110. CU 110 may be configured to handle user plane functionality (i.e., central unit-user plane (CU-UP)), control plane functionality (i.e., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 110 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, CU 110 may be implemented to communicate with DU 130 for network control and signaling.

[0039] DU 130 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 140. In some aspects, DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.) at least in part according to a functional split such as those defined by 3GPP. In some aspects, DU 130 may also host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by DU 130 or with control functions hosted by CU 110.

[0040] The lower layer functionality may be implemented by one or more RUs 140. In some deployments, the RU 140 controlled by the DU 130 may correspond to a logical node that hosts RF processing functions, or low PHY layer functions (such as performing Fast Fourier Transform (FFT), Inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, etc.), or both, based at least in part on functional splitting (such as lower layer functional splitting). In such an architecture, the RU 140 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some implementations, real-time and non-real-time aspects of the control plane and user plane of communication with the RU 140 may be controlled by the corresponding DU 130. In some scenarios, this configuration may enable the implementation of the DU 130 and the CU 110 in a cloud-based RAN architecture (such as a vRAN architecture).

[0041] The SMO framework 105 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element lifecycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 110, DU 130, RU 140, and near-RT RIC 125. In some specific implementations, the SMO framework 105 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 111) via the O1 interface. Additionally, in some specific implementations, the SMO framework 105 may communicate directly with one or more RUs 140 via the O1 interface. The SMO framework 105 may also include a non-RT RIC 115 configured to support the functionality of the SMO framework 105 .

[0042] The non-RT RIC 115 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) / machine learning (ML) (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 125. The non-RT RIC 115 may be coupled to or in communication with the near-RT RIC 125 (such as via an A1 interface). The near-RT RIC 125 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 110, one or more DUs 130, or both, and the O-eNB with the near-RT RIC 125.

[0043] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 125, the non-RT RIC 115 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 125 and may be received from a non-network data source or from a network function at the SMO framework 105 or the non-RT RIC 115. In some examples, the non-RT RIC 115 or the near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 115 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 105 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0044] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Therefore, the base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component is indicated by a dotted line to indicate that each component may be included in the base station 102 or may not be included in the base station). The base station 102 provides an access point to the core network 120 for the UE 104. The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). Small cells include femto cells, pico cells, and micro cells. A network including both small cells and macro cells may be referred to as a heterogeneous network. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group referred to as a closed subscriber group (CSG). The communication link between RU 140 and UE 104 may include uplink (UL) (also known as reverse link) transmission from UE 104 to RU 140 and / or downlink (DL) (also known as forward link) transmission from RU 140 to UE 104. The communication link may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. The communication link may be through one or more carriers. For each carrier allocated in a carrier aggregation of up to Yx MHz (x component carriers) for transmission in each direction, the base station 102 / UE 104 may use a spectrum of up to Y MHz (e.g., 5MHz, 10MHz, 15MHz, 20MHz, 100MHz, 400MHz, etc.) bandwidth. These carriers may or may not be adjacent to each other. The allocation of carriers may be equivalent to DL and UL asymmetric (e.g., more or fewer carriers may be allocated to DL than to UL). Component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0045] Some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 158 may 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). The D2D communication may be through a variety of wireless D2D communication systems, such as, for example, Bluetooth, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0046] The wireless communication system may also include a Wi-Fi AP 150 that communicates with a UE 104 (also referred to as a Wi-Fi station (STA)) via a communication link 154, for example, in a 5 GHz unlicensed spectrum, etc. When communicating in an unlicensed spectrum, the UE 104 / AP 150 may perform a clear channel assessment (CCA) to determine whether a channel is available prior to communication.

[0047] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. 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). Although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the "sub-6 GHz" band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0048] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125GHz-24.25GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, so the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designations FR2-2 (52.6GHz-71GHz), FR4 (71GHz-114.25GHz) and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0049] In view of the above, unless otherwise specified, if the term "6 GHz or less" is used herein, it may broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specified, if the term "millimeter wave" is used herein, it may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.

[0050] The base station 102 and the UE 104 may each include multiple antennas (such as antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming. The base station 102 may send a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also send a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the best receive direction and transmit direction for each of the base station 102 / UE 104. The transmit direction and receive direction of the base station 102 may be the same or different. The transmit direction and receive direction of the UE 104 may be the same or different.

[0051] The base station 102 may include and / or be referred to as a gNB, a Node B, an eNB, an access point, a 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 receive point (TRP), a network node, a network entity, a network equipment, or some other suitable term. The base station 102 may be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and a RU, or as a decomposed base station including one or more of a CU, a DU, and / or a RU. A set of base stations that may include decomposed base stations and / or aggregated base stations may be referred to as a next generation (NG) RAN (NG-RAN).

[0052] The core network 120 may include an access and mobility management function (AMF) 161, a session management function (SMF) 162, a user plane function (UPF) 163, a unified data management (UDM) 164, one or more location servers 168, and other functional entities. AMF 161 is a control node that handles signaling between UE 104 and core network 120. AMF 161 supports registration management, connection management, mobility management, and other functions. SMF 162 supports session management and other functions. UPF 163 supports packet routing, packet forwarding, and other functions. UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identity handling, access authorization, and subscription management. One or more location servers 168 are illustrated as including a gateway mobile location center (GMLC) 165 and a location management function (LMF) 166. However, in general, the one or more location servers 168 may include one or more location / positioning servers, which may include one or more of the GMLC 165, LMF 166, position determination entity (PDE), serving mobile location center (SMLC), mobile positioning center (MPC), etc. GMLC 165 and LMF 166 support UE location services. GMLC 165 provides an interface for clients / applications (e.g., emergency services) to access UE positioning information. LMF 166 receives measurement and assistance information from NG-RAN and UE 104 via AMF 161 to calculate the location of UE 104. NG-RAN may determine the location of UE 104 using one or more positioning methods. Positioning UE 104 may involve signal measurements, position estimation, and optional speed calculation based on these measurements. Signal measurements may be performed by UE 104 and / or serving base station 102. The measured signals may be based on a satellite positioning system (SPS) 170 (e.g., one or more of a global navigation satellite system (GNSS), a global positioning system (GPS), a non-terrestrial network (NTN), or other satellite positioning / location systems), LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS), sensor-based information (e.g., an atmospheric pressure sensor, a motion sensor), an NR enhanced cell ID (NR E-CID) method, NR signals (e.g., multi-round trip time (multi-RTT), DL angle of departure (DL-AoD), DL time difference of arrival (DL-TDOA), UL time difference of arrival (UL-TDOA), and UL angle of arrival (UL-AoA) positioning), and / or one or more of other systems / signals / sensors.

[0053] Examples of UE 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet computers, smart devices, wearable devices, vehicles, electric meters, gas pumps, large or small kitchen appliances, healthcare equipment, implants, sensors / actuators, displays, or any other similarly functional devices. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as stations, mobile stations, subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals, mobile phones, user agents, mobile clients, clients, or some other suitable terminology. In some scenarios, the term UE may also be applied to one or more supporting devices, such as in a device cluster arrangement. One or more of these devices may access the network collectively and / or individually.

[0054] See again Figure 1In some aspects, the UE 104 may include an overlay receiving component 198 configured to receive a first TDD UL DL slot format configuration in RRC signaling. The first TDD UL DL slot format configuration may indicate a communication type of a symbol set or a slot set, the communication type including one or more of an uplink, a downlink, or a flexible link. The overlay receiving component 198 may be further configured to receive an indication of an adjusted type of at least one symbol in the symbol set or at least one slot in the slot set. The at least one symbol is a D symbol or a U symbol based on the first time TDD UL DL slot format configuration, and the at least one slot may be a D slot or a U slot (U slot) based on the first time TDD UL DL slot format configuration. In some aspects, the base station 102 may include an overlay receiving component 199 configured to send or otherwise output the first TDD UL DL slot format configuration in RRC signaling. The first TDD UL DL time slot format configuration may indicate a communication type of a symbol set or a time slot set, which communication type includes one or more of an uplink, a downlink, or a flexible link. The coverage receiving component 199 may be further configured to send or otherwise output an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set. The at least one symbol may be a D symbol or a U symbol based on the first time TDD UL DL time slot format configuration, and the at least one time slot may be a D time slot or a U time slot based on the first time TDD UL DL time slot format configuration. Although the following description may focus on 5G NR, the concepts described herein may be applicable to other similar fields, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0055] Figure 2A FIG200 is a diagram illustrating an example of a first subframe within a 5G NR frame structure. Figure 2B FIG230 is a diagram illustrating an example of DL channels within a 5G NR subframe. Figure 2C FIG250 is a diagram illustrating an example of a second subframe within a 5G NR frame structure. Figure 2D FIG280 is a diagram illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplex (FDD) (wherein for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to either DL or UL), or may be time division duplex (TDD) (wherein for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to both DL and UL). Figure 2A , Figure 2CIn the example provided, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (most of which are DL), where D is DL, U is UL, and F is flexible between DL / UL, and subframe 3 is configured with slot format 1 (all of which are UL). Although subframes 3 and 4 are shown as having slot formats 1 and 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are full DL and full UL, respectively. Other slot formats 2-61 include a mix of DL, UL and flexible symbols. The UE is configured with the slot format through the received slot format indicator (SFI) (dynamically configured through DL control information (DCI) or semi-statically / statically configured through radio resource control (RRC) signaling). Note that the following description also applies to the 5G NR frame structure as TDD.

[0056] FIG. 2A to FIG. 2D The frame structure is illustrated, and various aspects of the present disclosure may be applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10ms) may be divided into 10 equally sized subframes (1ms). Each subframe may include one or more time slots. A subframe may also include a microslot, which may include 7, 4, or 2 symbols. Each time slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For a normal CP, each time slot may include 14 symbols, and for an extended CP, each time slot may include 12 symbols. The symbol on the DL may be a CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbol. The symbol on the UL may be a CP-OFDM symbol (for high throughput scenarios) or a discrete Fourier transform (DFT) extended OFDM (DFT-s-OFDM) symbol (for power-constrained scenarios; limited to single-stream transmission). The number of time slots within a subframe is based on the CP and parameter set. The parameter set defines the subcarrier spacing (SCS) (see Table 1). Symbol length / duration can be scaled with 1 / SCS.

[0057]

[0058] Table 1: Parameter set, SCS and CP

[0059] For normal CP (14 symbols / slot), different parameter sets μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For extended CP, parameter set 2 allows 4 slots per subframe. Thus, for normal CP and parameter set μ, there are 14 symbols / slot and 2 μ timeslots / subframe. The subcarrier spacing can be equal to 2 μ*15kHz, where μ is parameter set 0 to 4. Therefore, the subcarrier spacing for parameter set μ=0 is 15kHz, and the subcarrier spacing for parameter set μ=4 is 240kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIG. 2A to FIG. 2D An example is provided for a normal CP with 14 symbols per slot and a parameter set μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is about 16.67 μs. Within a frame set, there may be one or more different bandwidth parts (BWPs) that are frequency-division multiplexed (see Figure 2B ). Each BWP may have a specific parameter set and CP (normal or extended).

[0060] A resource grid may be used to represent the frame structure. Each slot includes a resource block (RB) (also referred to as a physical RB (PRB)) extending over 12 consecutive subcarriers. The resource grid is divided into a plurality of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0061] like Figure 2A As illustrated, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0062] Figure 2BExamples of various DL channels within a subframe of a frame are illustrated. A 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 a BWP may be referred to as a control resource set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during a PDCCH monitoring opportunity on a CORESET, wherein the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at higher and / or lower frequencies on the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of a particular subframe of a frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identification. A secondary synchronization signal (SSS) may be within symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and the radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as an SS block (SSB)). The MIB provides the number of RBs in the system bandwidth and the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information not sent via the PBCH (such as a system information block (SIB)), and paging messages.

[0063] like Figure 2C As illustrated, some of the REs carry DM-RS (indicated as R for a particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may send a DM-RS for a physical uplink control channel (PUCCH) and a DM-RS for a physical uplink shared channel (PUSCH). The PUSCH DM-RS may be sent in the first or first two symbols of the PUSCH. Depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used, the PUCCH DM-RS may be sent in different configurations. The UE may send a sounding reference signal (SRS). The SRS may be sent in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the teeth of the comb. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0064] Figure 2DExamples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at a position as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and hybrid automatic repeat request (HARQ) acknowledgement (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUSCH carries data and may be used to carry, among other things, a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0065] Figure 3 370 is a block diagram of a base station 310 in an access network communicating with a UE 350. In the DL, Internet Protocol (IP) packets may 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, SIB), 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 (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with delivery of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (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 transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0066] The transmit (TX) processor 316 and receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1 (which includes the physical (PHY) layer) may include error detection on the transport channel, forward error correction (FEC) coding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 handles the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-order phase shift keying (M-PSK), M-order quadrature amplitude modulation (M-QAM)). The coded and modulated symbols may then be separated into parallel streams. Each stream may then be mapped to an 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 pre-coded to generate multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation schemes, as well as for spatial processing. Channel estimates may be derived from reference signals and / or channel state feedback sent by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx may modulate a radio frequency (RF) carrier for transmission using a corresponding spatial stream.

[0067] At the UE 350, each receiver 354Rx receives a signal through its corresponding antenna 352. Each receiver 354Rx recovers the information modulated onto the RF carrier and provides the information to a 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 stream destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined into a single OFDM symbol stream by the RX processor 356. 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 includes 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 point sent by the base station 310. These soft decisions can be based on channel estimates calculated by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by the base station 310. The data and control signals are then provided to a controller / processor 359, which implements layer 3 and layer 2 functionality.

[0068] The controller / processor 359 may be associated with a memory 360 that stores program codes and data. The memory 360 may be referred to as a computer readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0069] Similar to the functionality described in conjunction with DL transmissions performed by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with delivery of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation 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.

[0070] Channel estimates derived by the channel estimator 358 based on a reference signal or feedback sent by the base station 310 may be used by the TX processor 368 to select appropriate coding and modulation schemes and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a corresponding spatial stream for transmission.

[0071] UL transmissions are processed at the base station 310 in a manner similar to that described in conjunction with the receiver functionality 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 the RX processor 370.

[0072] The controller / processor 375 may be associated with a memory 376 that stores program codes and data. The memory 376 may be referred to as a computer readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0073] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform operations related to Figure 1 The covering receiving component 198 is combined with various aspects.

[0074] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform operations related to Figure 1 The covering indicates various aspects of the combination of components 199.

[0075] Wireless communication systems can be configured to share available system resources and provide various telecommunication services (e.g., telephone, video, data, messaging, broadcasting, etc.) based on multiple access technologies that support communication with multiple users. Full-duplex operation (in which wireless devices exchange uplink and downlink communications that overlap in time) can achieve more efficient use of the wireless spectrum. Full-duplex operation may include simultaneous transmission and reception within the same frequency range. In some examples, the frequency range may be a mmW frequency range, such as frequency range 2 (FR2). In some examples, the frequency range may be a frequency range below 6 GHz, such as frequency range 1 (FR1). Full-duplex communication can reduce latency. For example, full-duplex operation may enable a UE to receive a downlink signal in an uplink-only timeslot, which may reduce latency in downlink communications. Full-duplex communication can improve spectral efficiency, for example, spectral efficiency per cell or per UE. Full-duplex communication can achieve more efficient use of wireless resources.

[0076] FIG. 4A to FIG. 4C Various modes of full-duplex communication are illustrated. Full-duplex communication supports sending and receiving information in a time-overlapping manner on the same frequency band. In this way, spectral efficiency can be improved relative to that of half-duplex communication, which supports sending or receiving information in one direction at a time without overlapping uplink and downlink communications. Due to the simultaneous Tx / Rx nature of full-duplex communication, a UE or base station may experience self-interference caused by signal leakage from its local transmitter to its local receiver. In addition, a UE or base station may also experience interference from other devices, such as transmission from a second UE or a second base station. Such interference (e.g., self-interference or interference caused by other devices) may affect communication quality, or even cause information loss.

[0077] Figure 4A A first example 400 of full-duplex communication is shown, where a first base station 402a is in full-duplex communication with a first UE 404a and a second UE 406a. The first UE 404a and the second UE 406a may be configured for half-duplex communication or full-duplex communication. Figure 4AA first UE 404a performing downlink reception and a second UE 406a performing uplink transmission are illustrated. The second UE 406a may send a first uplink signal to the first base station 402a and other base stations (such as a second base station 408a adjacent to the second UE 406a). The first base station 402a sends a downlink signal to the first UE 404a concurrently (e.g., overlapping at least partially in time) with receiving an uplink signal from the second UE 406a. The base station 402a may experience self-interference at the receiving antenna where it is receiving an uplink signal from the UE 406a, which is caused by receiving at least part of the downlink signal sent to the UE 404a. The base station 402a may experience additional interference, which is caused by a signal from the second base station 408a. Interference may also occur at the first UE 404a based on a signal from the second base station 408a and an uplink signal from the second UE 406a.

[0078] Figure 4B A second example 410 of full-duplex communication is shown, wherein the first base station 402b and the first UE 404b are in full-duplex communication. In this example, UE 404b also operates in full-duplex mode. The first base station 402b and UE 404b receive and send communications that overlap in time and are located in the same frequency band. The base station and UE can each experience self-interference because the signal sent from the device leaks to the receiver at the same device (e.g., received by the receiver). The first UE 404b can experience additional interference based on one or more signals transmitted from the second UE 406b and / or the second base station 408b adjacent to the first UE 404b.

[0079] Figure 4C A third example 420 of full-duplex communication is shown, where a first UE 404c sends and receives full-duplex communications with a first base station 402c and a second base station 408c. The first base station 402c and the second base station 408c can be used as multiple transmit receive points (multiple TRPs) for UL and DL communications with the UE 404c. The second base station 408c can also exchange communications with a second UE 406c. Figure 4C In the embodiment of the present invention, the first UE 404c may send an uplink signal to the first base station 402c, which overlaps in time with receiving a downlink signal from the second base station 408c. As a result of receiving at least a portion of the first signal while receiving the second signal, the first UE 404c may experience self-interference, for example, when the UE is trying to receive a signal from another base station 408c, the uplink signal of the UE going to the base station 402c may leak to the receiver of the UE (e.g., be received by the receiver). The first UE 404c may experience additional interference from the second UE 406c.

[0080] Figure 4D An example 430 of self-interference and interference due to clutter or a signal emitted from a transmitter at a device being reflected and received as an interfering signal by a receiver of the same device is illustrated. The distance (d) between the transmitter and the receiver may affect the amount of self-interference or clutter experienced during reception at the device. For example, the device may be such as FIG. 4A to FIG. 4C The base station or UE shown in .

[0081] Full-duplex communications may be in the same frequency band. Uplink and downlink communications may be in different frequency sub-bands, in the same frequency sub-band, or in partially overlapping frequency sub-bands. Figure 5A A first example 500 and a second example 510 of an in-band full-duplex (IBFD) resource and a third example 520 of a sub-band full-duplex (SBFD) resource are illustrated. In IBFD, signals may be transmitted and received in overlapping times and overlapping frequencies. As shown in the first example 500, the time and frequency allocation of the transmit resource 502 may completely overlap with the time and frequency allocation of the receive resource 504. In the second example 510, the time and frequency allocation of the transmit resource 512 may partially overlap with the time and frequency allocation of the receive resource 514.

[0082] IBFD is in contrast to sub-band FDD, where transmit and receive resources can overlap in time using different frequencies, as shown in the third example 520. In the third example 520, UL, transmit resources 522 are separated from receive resources 524 by a guard band 526. The guard band can be a frequency resource or a gap in a frequency resource provided between the transmit resources 522 and the receive resources 524. Using a guard band to separate the transmit frequency resources from the receive frequency resources can help reduce self-interference. Transmit resources and receive resources that are immediately adjacent to each other can be considered to have a guard bandwidth of 0. Since the output signal from the wireless device can extend beyond the transmit resource, the guard band can reduce the interference experienced by the wireless device. Sub-band FDD can also be referred to as "flexible duplexing".

[0083] If full-duplex operation is used for a UE or a device implementing UE functionality, the transmit resources 502, 512, and 522 may correspond to uplink resources, and the receive resources 504, 514, and 524 may correspond to downlink resources. Alternatively, if full-duplex operation is used for a base station or a device implementing base station functionality, the transmit resources 502, 512, and 522 may correspond to downlink resources, and the receive resources 504, 514, and 524 may correspond to uplink resources.

[0084] Figure 5BAn example base station is illustrated in which a portion of antenna panel 575 may be used to send communications to UE 1 and a portion of antenna panel 585 may be used to receive communications from UE 2 in full-duplex mode.

[0085] Sub-band full-duplex (SBFD) allows simultaneous transmission / reception of downlink (DL) / uplink (UL) on a sub-band basis. A full-duplex base station can perform simultaneous transmission and reception on the same time slot. SBFD can increase the UL duty cycle, thereby reducing latency (e.g., DL signals can be received in UL-only time slots, which can achieve latency savings) and improving UL coverage. Additionally, SBFD can enhance system capacity, resource utilization, and / or spectrum efficiency. SBFD also enables flexible and dynamic UL / DL resource adaptation in a robust manner based on UL / DL traffic.

[0086] The present disclosure provides methods and apparatus for performing SBFD operation at least in a radio resource control (RRC) connected state. In some aspects, these methods and apparatus may relate to scenarios in which the time-frequency position of a subband for SBFD operation is unknown to a user equipment (UE). In these scenarios, new UE behaviors may be introduced for SBFD-aware UEs. An SBFD-aware UE may refer to a UE that supports receiving information about an SBFD mode of a device (e.g., such as a base station) with which it is communicating. By supporting such information, the UE may sense the time when the base station will operate in SBFD mode, for example, signaling indicating the time may be received. Some UEs may not be SBFD-aware and may not support receiving information about the SBFD mode of the base station. In some aspects, only the time position of the subband for SBFD operation is known to the SBFD-aware UE. In these scenarios, new UE behaviors may be introduced for the SBFD-aware UE based on the time position of the subband for SBFD operation. In some aspects, the time-frequency position of the subband for SBFD operation is known to the SBFD-aware UE or may be provided to the SBFD-aware UE.

[0087] The UE may receive a configuration indicating a TDD UL / DL configuration for a period of time (eg, such as a number of symbols or a number of slots). As an example, the UE may receive a parameter tdd-UL-DL-ConfigurationCommon and / or a parameter tdd-UL-DL-ConfigurationDedicated, for example, in RRC signaling.

[0088] For example, in some commercial networks, some wireless network operators may not have or may have only a small number of RRC-configured flexible (F) symbols or time slots in their time slot formats. These networks may only include RRC-configured downlink (D) or uplink (U) symbols or time slots to reduce the number of time slot formats and thus reduce the changes in time slot format scenarios that the scheduler needs to consider, which can save UE power (e.g., by shutting down the Tx chain at pre-configured D time slots). However, RRC-configured D or U symbols (or time slots) may need to be distinguished between SBFD-aware UEs.

[0089] In one configuration, the base station may send a signal to the UE to cover symbols or time slots of the RRC configuration type.

[0090] Fig. 6A 600 is a diagram illustrating an overlay RRC configuration type according to one aspect of the present disclosure. Fig. 6A In the example of , a signal is provided to cover downlink (D) type symbols / time slots 602, 604 with uplink (U) type symbols / time slots 612, 614, respectively. The base station can operate in SBFD mode, transmitting downlink transmissions to one UE and receiving uplink transmissions from another UE. Figure 6B 620 is a diagram illustrating an overlay RRC configuration type according to another aspect of the present disclosure. Figure 6B In the example of , a signal is provided to cover the downlink (D) type symbols / time slots 622, 624 to symbols / time slots of a new type (ie, SBFD type), as shown by 632, 634, respectively. In another configuration, a signal may be provided to indicate the time position of the subband for SBFD operation. Figure 6C 640 is a diagram illustrating an overlay RRC configuration direction according to yet another aspect of the present disclosure. Figure 6C In the example of , a signal is provided to indicate the time position of the subband for SBFD operation (i.e., the position corresponding to the symbol / time slot 642, 644). The type of these corresponding symbols / time slots can be changed from, for example, D symbols / time slots (as indicated by 642, 644) to flexible symbols / time slots (as indicated by 652, 654), respectively, for SBFD operation.

[0091] Signaling for covering the direction / type of the RRC configuration of the TDD UL / DL format and indicating only the time position of the subband for SBFD operation can be implemented in a variety of ways. In one configuration, the signaling may be sent via an RRC message. A new information element (IE) may be provided in an RRC message for SBFD-aware UEs. For example, the new IE may be called TDD-UL-DL-ConfigurationCommon-SBFD or TDD-UL-DL-ConfigurationDedicated-SBFD or another name and may be received in an RRC message. In one configuration, the parameters TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated in the RRC message may be used. The latest version of the parameter TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated may update / cover an older version of the parameter TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated at least for the primary cell (PCell). When signaled by RRC, the RRC message may be broadcast or multicast (eg, via SIB). The intended UE ID or UE group ID may also be signaled. In one example, the RRC message may be a UE-specific unicast message.

[0092] In one configuration, signaling may be sent via DCI. In one example, the DCI may have an enhanced DCI format 2_0, such as SFI, which allows overriding parameters TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated. In one example, other DCI formats may be used. These formats may include both existing and new DCI formats, which carry updated parameters TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated. The DCI format may be UE-specific or group-common.

[0093] In one configuration, signaling may be sent via MAC-CE. In one example, MAC-CE may have an enhanced format that allows overriding of parameters TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated. In one example, other MAC-CE formats may be used. These formats may include both existing and new MAC-CE formats that carry updated parameters TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated. For example, the MAC-CE format may be UE-specific or group-common.

[0094] In one configuration, when the symbol / slot direction / type configured by RRC is overridden by signaling and only the time position of the subband used for SBFD operation is indicated, the updated parameter TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated may have a symbol / slot direction / type or a D, U, or F type. For example, when the symbol / slot direction / type configured by RRC is overridden by signaling, the RRC D symbol may be updated / overridden to an RRC U symbol, and the RRC U symbol may be updated / overridden to an RRC D symbol. When only the time position of the subband used for SBFD operation is indicated by signaling, the RRC D symbol may be updated / overridden to an RRC F symbol, and the RRC U symbol may be updated / overridden to an RRC F symbol.

[0095] In another configuration, when the symbol / time slot direction / type configured by RRC is overridden by signaling and only the time position of the subband for SBFD operation is indicated, the updated parameter TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated may have only the new symbol / time slot direction / type. For example, the updated parameter TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated may have the SBFD type for the UE.

[0096] In order to protect the common DL channels / RS, specific rules may be defined that the UE is not expected to receive the signaling or indicated symbol / slot format covering the RRC D tdd-UL-DL-ConfigCommon symbol / slot on the common DL channel symbols / slots for SBFD aware UEs. These symbols / slots may include, but are not limited to, SSB symbols / slots, CORESET0 symbols / slots, common search space (CSS) physical downlink control channel (PDCCH) symbols / slots, CSS-PDCCH scheduled physical downlink shared channel (PDSCH) symbols / slots, common RS (e.g., TRS), and common semi-persistent scheduling opportunities (e.g., for broadcast signals).

[0097] In order to protect the high priority UL channel symbols / timeslots for SBFD aware UEs, the rules may specify that the UE is not expected to receive signaling or indicating symbol / timeslot formats that cover RRC U tdd-UL-DL-ConfigCommon symbols / timeslots on some high priority UL channel symbols / timeslots for SBFD aware UEs. These symbols / timeslots may include, but are not limited to, RO symbols / timeslots, SRS symbols / timeslots, and PUCCH symbols / timeslots. If the UE receives signaling that covers such symbols or time slots, the UE may identify an error or may ignore the change in the type of the symbol or time slot.

[0098] Figure 7 7 is a call flow diagram 700 illustrating a method of wireless communication according to various aspects of the present disclosure. Although various aspects are described with respect to base station 704, these aspects may be performed by base stations in an aggregation and / or by one or more components of base station 704 (e.g., such as CU 110, DU 130, and / or RU 140). Figure 7 As shown, UE 702 may receive a first TDD UL DL slot format configuration in radio resource control (RRC) signaling at 706. The first TDD UL DL slot format configuration may indicate a communication type of a symbol set or a slot set. The communication type of a symbol set (or a slot set) may include a communication direction of the symbol set (or the slot set). For example, the communication type of a symbol set (or a slot set) may be a downlink type or an uplink type.

[0099] At 708, the UE 702 may receive an indication of an adjusted type (e.g., a change to a previously indicated symbol / slot type) of at least one symbol in the symbol set or at least one slot in the slot set. The at least one symbol may be a downlink symbol (D symbol) or an uplink symbol (U symbol) based on the first time TDD UL DL slot format configuration, and the at least one slot may be a downlink slot (D slot) or an uplink slot (U slot) based on the first time TDD UL DL slot format configuration.

[0100] At 710, UE 702 may identify an error condition in response to an indication indicating a change in a D symbol or D slot in which a common downlink channel or a common downlink reference signal is scheduled. The change may include a change to a U symbol, a U slot, a flexible symbol, a flexible slot, an SBFD type symbol, or an SBFD type slot.

[0101] At 712, the UE 702 may skip the adjusted type from the indication in response to the indication indicating a change in the downlink symbols or downlink time slots in which the common downlink channel or the common downlink reference signal is scheduled.

[0102] At 714, the UE 702 may identify an error condition in response to the indication indicating to change the U symbol or U slot to a D symbol, a D slot, a flexible symbol, a flexible slot, an SBFD type symbol, or an SBFD type slot. The UE 702 may identify the error condition based on an uplink symbol or an uplink slot scheduled with at least one of a random access opportunity (RO), an SRS, or a PUCCH.

[0103] At 716, the base station 704 may refrain from indicating in the indication a change in a D symbol or D slot in which a common downlink channel or a common downlink reference signal is scheduled. The change may include a change to a U symbol, a U slot, a flexible symbol, a flexible slot, an SBFD type symbol, or an SBFD type slot.

[0104] At 718, the base station 704 may avoid indicating in the indication that a U symbol or U slot is changed to a D symbol, a D slot, a flexible symbol, a flexible slot, a SBFD type symbol, or a SBFD type slot. The base station 704 may avoid the change based on the U symbol or U slot being scheduled using at least one of RO, SRS, or PUCCH.

[0105] Figure 8 800 is a flowchart illustrating a method of wireless communication at a UE according to various aspects of the present disclosure. The method may be performed by a UE. The UE may be Fig.12The method enables signaling to cover the RRC configured transmission direction of a symbol or time slot and indicate the time position of the subband for SBFD operation. The method enables flexible utilization of transmission resources in wireless communication according to actual operation requirements. Therefore, the efficiency of wireless communication is improved.

[0106] like Figure 8 As shown, at 802, the UE may receive a first TDD UL DL time slot format configuration in a radio resource control (RRC) signaling. The first TDD UL DL time slot format configuration may indicate a communication direction of a symbol set or a time slot set, such as a communication type of the symbol set or the time slot set, which communication type includes one or more of uplink, downlink, or flexible link. The network entity may be Figure 1 A base station or a component of a base station in an access network, or a core network component (e.g., base station 102, 310; base station 704; or Fig.12 Network entity 1202 in a hardware specific implementation). Fig. 6A , Figure 6B , Figure 6C and Figure 7 Various aspects of the steps associated with flowchart 800 are illustrated. For example, see Figure 7 , UE 702 may receive a first TDD UL DL time slot format configuration in RRC signaling from a network entity (base station 704) at 706. Fig. 6A , the first TDD UL DL slot format configuration may indicate a communication direction for a set of symbols or time slots (eg, downlink “D” for symbols / time slots 602, 604).

[0107] At 804, the UE may receive an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set. The at least one time slot of the adjusted communication type is a downlink time slot (D time slot) or an uplink time slot (U time slot) configured based on the first time TDD UL DL time slot format. For example, see Figure 7 , the UE 702 may receive at 708 an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set from a network entity (base station 704).

[0108] Fig. 9 900 is a flowchart illustrating a method of wireless communication at a UE according to various aspects of the present disclosure. The method may be performed by a UE. The UE may be Fig.12The method enables signaling to cover the RRC configured transmission direction of a symbol or time slot and indicate the time position of the subband for SBFD operation. The method enables flexible utilization of transmission resources in wireless communication according to actual operation requirements. Therefore, the efficiency of wireless communication is improved.

[0109] like Fig. 9 As shown, at 902, the UE may receive a first TDD UL downlink DL time slot format configuration in RRC signaling. The first TDD UL DL time slot format configuration may indicate a communication direction of a symbol set or a time slot set, such as a communication type of the symbol set or the time slot set, which communication type includes one or more of uplink, downlink, or flexible link. The network entity may be Figure 1 A base station or a component of a base station in an access network, or a core network component (e.g., base station 102, 310; base station 704; or Fig.12 Network entity 1202 in a hardware specific implementation). Fig. 6A , Figure 6B , Figure 6C and Figure 7 Various aspects of the steps associated with flowchart 900 are illustrated. For example, see Figure 7 , UE 702 may receive a first TDD UL DL time slot format configuration in RRC signaling from a network entity (base station 704) at 706. Fig. 6A , the first TDD UL DL slot format configuration may indicate a communication direction for a set of symbols or time slots (eg, a downlink direction “D” for symbols / time slots 602 , 604 ).

[0110] At 904, the UE may receive an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set. The at least one time slot of the adjusted communication type is a downlink time slot (D time slot) or an uplink time slot (U time slot) configured based on the first time TDD UL DL time slot format. For example, see Figure 7 , the UE 702 may receive at 708 an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set from a network entity (base station 704).

[0111] In some aspects, the adjusted type may be used for SBFD operation of the network entity in the at least one symbol or the at least one time slot. Figure 6C, the adjusted type may be used for SBFD operation of the network entity in the at least one symbol or the at least one time slot. That is, the symbol / time slot type may be changed from a D symbol / time slot (as indicated by 642, 644) to a flexible symbol / time slot (as indicated by 652, 654) for SBFD operation.

[0112] In some aspects, the indication may be included in an RRC message. The RRC message may include at least one of the following: a second TDD UL DL time slot format configuration that is common to multiple UEs or all UEs in a cell or is dedicated to the UE at least for a primary cell (PCell) of a SBFD-aware UE; or an updated TDD UL DL time slot format configuration that is common to multiple UEs or all UEs in the cell or is dedicated to the UE at least for a PCell of a SBFD-aware UE. For example, see Figure 7 , when UE 702 receives the indication of the adjusted type at 708, the indication may be included in the RRC message. The RRC message may include at least one of the following: a second TDD UL DL slot format configuration (e.g., a new TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter), which is common to multiple UEs or all UEs in the cell or is dedicated to the UE at least for the PCell of the SBFD-aware UE, or an updated TDD UL DL slot format configuration (an updated TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter), which is common to multiple UEs or all UEs in the cell or is dedicated to the UE at least for the PCell of the SBFD-aware UE.

[0113] In some aspects, the RRC message may be included in a broadcast, multicast, or unicast. In some aspects, the RRC message may also include one or more UE IDs or one or more UE group IDs of the intended UEs for the RRC message. For example, see Figure 7 , when UE 702 receives an indication of an adjusted type included in an RRC message at 708, the RRC message may be included in a broadcast, multicast, or unicast, and the RRC message may also include one or more UE IDs or one or more UE group IDs of the intended UE (e.g., UE 702) of the RRC message.

[0114] In some aspects, the indication may be included in downlink control information (DCI). In some aspects, the DCI may be one of: a DCI with an enhanced DCI format that allows overriding of the TDD UL DL slot format configuration in the DCI; a DCI carrying an updated TDD UL DL slot format configuration; or a DCI with a UE-specific or group-common DCI format. For example, see Figure 7 , when UE 702 receives an indication of the adjusted type at 708, the indication may be included in a DCI, and the DCI may be one of the following: a DCI with an enhanced DCI format that allows overriding of the TDD UL DL time slot format configuration in the DCI (e.g., a TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter); a DCI carrying an updated TDD UL DL time slot format configuration (e.g., an updated TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter); or a DCI with a UE-specific or group-common DCI format.

[0115] In some aspects, the indication may be included in a medium access control-control element (MAC-CE). In some aspects, the MAC-CE may be one of: a MAC-CE with an enhanced MAC-CE format that allows overriding of the TDD UL DL timeslot format configuration in the MAC-CE; a MAC-CE carrying an updated TDD UL DL timeslot format configuration; or a MAC-CE with a UE-specific or group-common MAC-CE format. For example, see Figure 7 , when UE 702 receives an indication of the adjusted type at 708, the indication may be included in a MAC-CE, and the MAC-CE may be one of the following: a MAC-CE with an enhanced MAC-CE format that allows overwriting of the TDD UL DL time slot format configuration in the MAC-CE (e.g., a TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter); a MAC-CE carrying an updated TDD UL DL time slot format configuration (e.g., an updated TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter); or a MAC-CE with a UE-specific or group-common MAC-CE format.

[0116] In some aspects, the adjusted type included in the indication may indicate one or more of: a previously indicated downlink symbol is changed to an uplink symbol, a previously indicated downlink symbol is changed to a flexible symbol, a previously indicated downlink time slot is changed to an uplink time slot, a previously indicated downlink time slot is changed to a flexible time slot, a previously indicated uplink symbol is changed to a downlink symbol, a previously indicated uplink symbol is changed to a flexible symbol, a previously indicated uplink time slot is changed to a downlink time slot, or a previously indicated uplink time slot is changed to a flexible time slot. For example, see Figure 7 , when UE 702 receives an indication of an adjusted type at 708, the adjusted type included in the indication may indicate one or more of the following: a previously indicated downlink symbol is changed to an uplink symbol, a previously indicated downlink symbol is changed to a flexible symbol, a previously indicated downlink time slot is changed to an uplink time slot, a previously indicated downlink time slot is changed to a flexible time slot, a previously indicated uplink symbol is changed to a downlink symbol, a previously indicated uplink symbol is changed to a flexible symbol, a previously indicated uplink time slot is changed to a downlink time slot, or a previously indicated uplink time slot is changed to a flexible time slot. In one example, see Fig. 6A , the adjustment type may indicate that the previously indicated downlink symbol / time slot (as indicated by 602, 604) is changed to an uplink symbol / time slot (as indicated by 612, 614). In another example, see Figure 6C The adjustment type may indicate that the previously indicated downlink symbol / slot (as shown in 642 and 644) is changed to a flexible symbol / slot (as shown in 652 and 654).

[0117] In some aspects, the indication may indicate the adjusted type as a SBFD type symbol or a SBFD type slot. Figure 6C , the indication may indicate the adjusted type as a SBFD type symbol or a SBFD type time slot, as indicated by 652 , 654 .

[0118] At 906, the UE may identify an error condition in response to an indication indicating a change in a downlink symbol or downlink time slot in which a common downlink channel or a common downlink reference signal is scheduled. The change may include a change to an uplink symbol, an uplink time slot, a flexible symbol, a flexible time slot, an SBFD type symbol, or an SBFD type time slot. For example, see Figure 7 , the UE 702 may identify an error condition at 710 in response to an indication indicating a change in the D symbols or D slots in which the common downlink channel or the common downlink reference signal is scheduled.

[0119] At 908, the UE may skip the adjusted type from the indication in response to the indication indicating a change in the downlink symbol or downlink time slot in which the common downlink channel or the common downlink reference signal is scheduled. Figure 7 , the UE 702 may skip the adjusted type from the indication at 712 in response to the indication indicating a change in the D symbols or D slots in which the common downlink channel or the common downlink reference signal is scheduled.

[0120] In some aspects, the common downlink channel or the common downlink reference signal may include at least one of the following: a synchronization signal block (SSB), a control resource set 0 (CORESET0), a common search space (CSS) physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH) scheduled by the CSS PDCCH, a reference signal common to multiple UEs or all UEs in a cell, or a semi-persistent scheduling opportunity common to multiple UEs or all UEs in the cell. For example, see Figure 7 , when UE 702 identifies an error condition at 710 in response to an indication indicating a change in the D symbol or D time slot in which a common downlink channel or a common downlink reference signal is scheduled, or when UE 702 skips the adjusted type from the indication at 712 in response to an indication indicating a change in the D symbol or D time slot in which a common downlink channel or a common downlink reference signal is scheduled, the common downlink channel or the common downlink reference signal may include at least one of the following items: SSB, CORESET0, CSS PDCCH, PDSCH scheduled by CSS PDCCH, a reference signal common to multiple UEs or all UEs in a cell, or a semi-persistent scheduling opportunity common to multiple UEs or all UEs in the cell.

[0121] At 910, the UE may identify an error condition in response to an indication indicating that an uplink symbol or an uplink time slot is changed to a downlink symbol, a downlink time slot, a flexible symbol, a flexible time slot, an SBFD type symbol, or an SBFD type time slot. The UE may identify the error condition based on an uplink symbol or an uplink time slot scheduled using at least one of RO, SRS, or PUCCH. For example, see Figure 7 , the UE 702 may identify an error condition at 714 in response to an indication indicating a change of an uplink symbol or an uplink time slot to a downlink symbol, a downlink time slot, a flexible symbol, a flexible time slot, a SBFD type symbol, or a SBFD type time slot.

[0122] Fig.10 1000 is a flowchart illustrating a method of wireless communication at a network entity according to various aspects of the present disclosure. The method may be performed by a network entity. The network entity may be Figure 1 A base station or a component of a base station in an access network, or a core network component (e.g., base station 102, 310, 704; or Fig.12 The method enables signaling to cover the RRC configured transmission direction of the symbol or time slot and indicate the time position of the subband for SBFD operation. The method enables flexible use of transmission resources in wireless communication according to actual operation requirements. Therefore, the efficiency of wireless communication is improved.

[0123] like Fig.10 As shown, at 1002, the network entity may send a first TDD UL DL time slot format configuration in RRC signaling. The first TDD UL DL time slot format configuration may indicate a communication direction of a symbol set or a time slot set, such as a communication type of the symbol set or the time slot set, the communication type including one or more of uplink, downlink, or flexible link. The network entity may send the first TDD UL DL time slot format configuration to the UE. The UE may be Fig.12 UE 104, 350, 702 or device 1204 in a hardware specific implementation of. Fig. 6A , Figure 6B , Figure 6C and Figure 7 Various aspects of the steps associated with flowchart 1000 are illustrated. For example, see Figure 7 , the network entity (base station 704) may send a first TDD UL DL time slot format configuration in RRC signaling at 706. Fig. 6A , the first TDD UL DL slot format configuration may indicate a communication direction for a set of symbols or time slots (eg, a downlink direction “D” for symbols / time slots 602 , 604 ).

[0124] At 1004, the network entity may send an indication of the adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set. The at least one symbol of the adjusted communication type may be a D symbol or a U symbol based on the first time TDD UL DL time slot format configuration. The at least one time slot of the adjusted communication type may be a D time slot or a U time slot based on the first time TDD UL DL time slot format configuration. For example, see Figure 7 , the network entity (base station 704) may send an indication of the adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set from the network entity at 708.

[0125] Fig.11 1100 is a flowchart illustrating a method of wireless communication at a network entity according to various aspects of the present disclosure. The method may be performed by a network entity. The network entity may be Figure 1A base station or a component of a base station in an access network, or a core network component (e.g., base station 102, 310, 704; or Fig.12 The method enables signaling to cover the RRC configured transmission direction of the symbol or time slot and indicate the time position of the subband for SBFD operation. The method enables flexible use of transmission resources in wireless communication according to actual operation requirements. Therefore, the efficiency of wireless communication is improved.

[0126] like Fig.11 As shown, at 1102, the network entity may send a first TDD UL DL time slot format configuration in RRC signaling. The first TDD UL DL time slot format configuration may indicate a communication direction of a symbol set or a time slot set, such as a communication type of the symbol set or the time slot set, the communication type including one or more of uplink, downlink, or flexible link. The network entity may send the first TDD UL DL time slot format configuration to the UE. The UE may be Fig.12 UE 104, 350, 702 or device 1204 in a hardware specific implementation of. Fig. 6A , Figure 6B , Figure 6C and Figure 7 Various aspects of the steps associated with flowchart 1100 are illustrated. For example, see Figure 7 , the network entity (base station 704) may send a first TDD UL DL time slot format configuration in RRC signaling at 706. Fig. 6A , the first TDD UL DL slot format configuration may indicate a communication direction for a set of symbols or time slots (eg, a downlink direction “D” for symbols / time slots 602 , 604 ).

[0127] At 1104, the network entity may send an indication of the adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set. The at least one symbol of the adjusted communication type may be a D symbol or a U symbol based on the first time TDD UL DL time slot format configuration. The at least one time slot of the adjusted communication type may be a D time slot or a U time slot based on the first time TDD UL DL time slot format configuration. For example, see Figure 7 , the network entity (base station 704) may send an indication of the adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set from the network entity at 708.

[0128] In some aspects, the adjusted type may be used for SBFD operation of the network entity in the at least one symbol or the at least one time slot. Figure 6C, the adjusted type may be used for SBFD operation of the network entity in the at least one symbol or the at least one time slot. That is, the symbol / time slot type may be changed from a D symbol / time slot (as indicated by 642, 644) to a flexible symbol / time slot (as indicated by 652, 654) for SBFD operation.

[0129] In some aspects, the indication may be included in an RRC message. The RRC message may include at least one of the following: a second TDD UL DL time slot format configuration that is common to multiple UEs or all UEs in a cell or is dedicated to the UE at least for the PCell of the SBFD-aware UE; or an updated TDD UL DL time slot format configuration that is common to multiple UEs or all UEs in the cell or is dedicated to the UE at least for the PCell of the SBFD-aware UE. For example, see Figure 7 , when the network entity (base station 704) sends the indication of the adjusted type at 708, the indication may be included in the RRC message. The RRC message may include at least one of the following items: a second TDD UL DL time slot format configuration (e.g., a new TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter), which is common to multiple UEs or all UEs in the cell or is dedicated to the UE at least for the PCell of the SBFD-aware UE, or an updated TDD UL DL time slot format configuration (an updated TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter), which is common to multiple UEs or all UEs in the cell or is dedicated to the UE at least for the PCell of the SBFD-aware UE.

[0130] In some aspects, the RRC message may be broadcast, multicast, or unicast. The RRC message may also include one or more intended UE IDs or one or more UE group IDs of the intended UEs for the RRC message. For example, see Figure 7 , when the network entity (base station 704) sends an indication of the adjusted type included in an RRC message at 708, the RRC message may be included in a broadcast, multicast, or unicast, and the RRC message may also include one or more UE IDs or one or more UE group IDs of the intended UE (e.g., UE 702) of the RRC message.

[0131] In some aspects, the indication may be included in the DCI. In some aspects, the DCI may be one of: a DCI with an enhanced DCI format that allows overriding of the TDD UL DL slot format configuration in the DCI; a DCI carrying an updated TDD UL DL slot format configuration; or a DCI with a UE-specific or group-common DCI format. For example, see Figure 7 , when the network entity (base station 704) sends an indication of the adjusted type at 708, the indication may be included in the DCI, and the DCI may be one of the following: a DCI with an enhanced DCI format that allows overriding of the TDD UL DL time slot format configuration in the DCI (e.g., a TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter); a DCI carrying an updated TDD UL DL time slot format configuration (e.g., an updated TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter); or a DCI with a UE-specific or group-common DCI format.

[0132] In some aspects, the indication may be included in the MAC-CE. In some aspects, the MAC-CE may be one of: a MAC-CE with an enhanced MAC-CE format that allows overriding of the TDD UL DL timeslot format configuration in the MAC-CE; a MAC-CE carrying an updated TDD UL DL timeslot format configuration; or a MAC-CE with a UE-specific or group-common MAC-CE format. For example, see Figure 7 , when the network entity (base station 704) sends an indication of the adjusted type at 708, the indication may be included in a MAC-CE, and the MAC-CE may be one of the following: a MAC-CE with an enhanced MAC-CE format that allows overwriting of the TDD UL DL time slot format configuration in the MAC-CE (e.g., a TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter); a MAC-CE carrying an updated TDD UL DL time slot format configuration (e.g., an updated TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated parameter); or a MAC-CE with a UE-specific or group-common MAC-CE format.

[0133] In some aspects, the adjusted type included in the indication may indicate one or more of: a previously indicated downlink symbol is changed to an uplink symbol, a previously indicated downlink symbol is changed to a flexible symbol, a previously indicated downlink time slot is changed to an uplink time slot, a previously indicated downlink time slot is changed to a flexible time slot, a previously indicated uplink symbol is changed to a downlink symbol, a previously indicated uplink symbol is changed to a flexible symbol, a previously indicated uplink time slot is changed to a downlink time slot, or a previously indicated uplink time slot is changed to a flexible time slot. For example, see Figure 7 , when the network entity (base station 704) sends an indication of an adjusted type at 708, the adjusted type included in the indication may indicate one or more of the following: a previously indicated downlink symbol is changed to an uplink symbol, a previously indicated downlink symbol is changed to a flexible symbol, a previously indicated downlink time slot is changed to an uplink time slot, a previously indicated downlink time slot is changed to a flexible time slot, a previously indicated uplink symbol is changed to a downlink symbol, a previously indicated uplink symbol is changed to a flexible symbol, a previously indicated uplink time slot is changed to a downlink time slot, or a previously indicated uplink time slot is changed to a flexible time slot. In one example, see Fig. 6A , the adjustment type may indicate that the previously indicated downlink symbol / time slot (as indicated by 602, 604) is changed to an uplink symbol / time slot (as indicated by 612, 614). In another example, see Figure 6C The adjustment type may indicate that the previously indicated downlink symbol / slot (as shown in 642 and 644) is changed to a flexible symbol / slot (as shown in 652 and 654).

[0134] In some aspects, the indication may indicate the adjusted type as a SBFD type symbol or a SBFD type slot. Figure 6C , the indication may indicate the adjusted type as a SBFD type symbol or a SBFD type time slot, as indicated by 652 , 654 .

[0135] At 1106, the network entity may refrain from indicating in the indication a change in a downlink symbol or downlink time slot in which a common downlink channel or a common downlink reference signal is scheduled. The change may include a change to an uplink symbol, an uplink time slot, a flexible symbol, a flexible time slot, an SBFD type symbol, or an SBFD type time slot. For example, see Figure 7 , the network entity (base station 704) may avoid indicating in the indication at 716 a change of a downlink symbol or a downlink time slot in which a common downlink channel or a common downlink reference signal is scheduled.

[0136] In some aspects, the common downlink channel or common downlink reference signal may include at least one of the following: SSB, CORESET0, CSS PDCCH, PDSCH scheduled by CSS PDCCH, a reference signal common to multiple UEs or all UEs in a cell, or a semi-persistent scheduling opportunity common to multiple UEs or all UEs in the cell. For example, see Figure 7 , when the network entity (base station 704) may avoid indicating in the indication at 716 a change of a downlink symbol or a downlink time slot in which a common downlink channel or a common downlink reference signal is scheduled, the common downlink channel or the common downlink reference signal may include at least one of the following items: SSB, CORESET0, CSS PDCCH, PDSCH scheduled by CSS PDCCH, a reference signal common to multiple UEs or all UEs in a cell, or a semi-persistent scheduling opportunity common to multiple UEs or all UEs in the cell.

[0137] At 1108, the network entity may refrain from indicating in the indication a change of an uplink symbol or uplink time slot to a downlink symbol, a downlink time slot, a flexible symbol, a flexible time slot, a SBFD type symbol, or a SBFD type time slot. The network entity may refrain from the change based on an uplink symbol or uplink time slot being scheduled using at least one of RO, SRS, or PUCCH. For example, see Figure 7 , the network entity (base station 704) may avoid indicating in an indication at 718 that an uplink symbol or uplink time slot is changed to a downlink symbol, a downlink time slot, a flexible symbol, a flexible time slot, a SBFD type symbol, or a SBFD type time slot.

[0138] Fig.121200 is a diagram illustrating an example of a hardware implementation for an apparatus 1204. The apparatus 1204 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1204 may include a cellular baseband processor 1224 (also referred to as a modem) coupled to one or more transceivers 1222 (e.g., a cellular RF transceiver). The cellular baseband processor 1224 may include on-chip memory 1224'. In some aspects, the apparatus 1204 may also include one or more subscriber identity module (SIM) cards 1220 and an application processor 1206 coupled to a secure digital (SD) card 1208 and a screen 1210. The application processor 1206 may include on-chip memory 1206'. In some aspects, the device 1204 may also include a Bluetooth module 1212, a WLAN module 1214, an SPS module 1216 (e.g., a GNSS module), one or more sensor modules 1218 (e.g., an atmospheric pressure sensor / altimeter; a motion sensor such as an inertial measurement unit (IMU), a gyroscope, and / or an accelerometer; light detection and ranging (LIDAR), radio-aided detection and ranging (RADAR), sound navigation and ranging (SONAR), a magnetometer, audio, and / or other technologies for positioning), an additional memory module 1226, a power source 1230, and / or a camera 1232. The Bluetooth module 1212, the WLAN module 1214, and the SPS module 1216 may include an on-chip transceiver (TRX) (or in some cases, only a receiver (RX)). The Bluetooth module 1212, the WLAN module 1214, and the SPS module 1216 may include their own dedicated antennas and / or communicate using an antenna 1280. The cellular baseband processor 1224 communicates with the UE 104 and / or with the RU associated with the network entity 1202 through the transceiver 1222 via one or more antennas 1280. The cellular baseband processor 1224 and the application processor 1206 may each include a computer-readable medium / memory 1224', 1206', respectively. The additional memory module 1226 may also be considered a computer-readable medium / memory. Each computer-readable medium / memory 1224', 1206', 1226 may be non-transitory. The cellular baseband processor 1224 and the application processor 1206 are each responsible for general processing, including executing software stored on a computer-readable medium / memory. The software, when executed by the cellular baseband processor 1224 / application processor 1206, enables the cellular baseband processor 1224 / application processor 1206 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the cellular baseband processor 1224 / application processor 1206 when executing the software.The cellular baseband processor 1224 / application processor 1206 may be a component of the UE 350 and may include the memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the device 1204 may be a processor chip (modem and / or application) and include only the cellular baseband processor 1224 and / or the application processor 1206, and in another configuration, the device 1204 may be the entire UE (e.g., see. Figure 3 350) and includes additional modules of device 1204.

[0139] As discussed above, component 198 is configured to receive a first TDD UL DL slot format configuration in RRC signaling. The first TDD UL DL slot format configuration may indicate a communication type of a symbol set or a slot set. Component 198 may be further configured to receive an indication of an adjusted type of at least one symbol in the symbol set or at least one slot in the slot set. The at least one symbol is a D symbol or a U symbol based on the first time TDD UL DL slot format configuration, and the at least one slot may be a D slot or a U slot (U slot) based on the first time TDD UL DL slot format configuration. Component 198 may be further configured to perform a combination Figure 8 or Fig. 9 Any of the aspects described in the flowcharts of, and / or by Figure 7 Any of the aspects performed by the UE702 in the . Component 198 may be within the cellular baseband processor 1224, the application processor 1206, or both the cellular baseband processor 1224 and the application processor 1206. Component 198 may be one or more hardware components specifically configured to perform the process / algorithm, implemented by one or more processors configured to perform the process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. As shown, the device 1204 may include a variety of components configured for various functions. In one configuration, the device 1204, and in particular the cellular baseband processor 1224 and / or the application processor 1206, includes a component for receiving a first TDD UL DL time slot format configuration in RRC signaling. The first TDD UL DL time slot format configuration may indicate a communication type of a symbol set or a time slot set. The device 1204 may also include a component for receiving an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set. The at least one symbol is a D symbol or a U symbol based on the first time TDD UL DL time slot format configuration, and the at least one time slot may be a D time slot or a U time slot (U time slot) based on the first time TDD UL DL time slot format configuration. The apparatus 1204 may also include a method for performing a combination Figure 8 and Fig. 9 Aspects described by flowcharts of, and / or by Figure 7 1204. A component may be a component 198 of the apparatus 1204 configured to perform the functions recited by the component. As described above, the apparatus 1204 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Thus, in one configuration, the component may be a TX processor 368, an RX processor 356, and / or a controller / processor 359 configured to perform the functions recited by the component.

[0140] Fig.131300 is a diagram illustrating an example of a hardware implementation for a network entity 1302. The network entity 1302 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1302 may include at least one of a CU 1310, a DU 1330, or a RU 1340. For example, depending on the layer functionality handled by the component 199, the network entity 1302 may include a CU 1310; both a CU 1310 and a DU 1330; each of the CU 1310, the DU 1330, and the RU 1340; the DU 1330; both a DU 1330 and a RU 1340; or the RU 1340. The CU 1310 may include a CU processor 1312. The CU processor 1312 may include an on-chip memory 1312'. In some aspects, the CU 1310 may also include an additional memory module 1314 and a communication interface 1318. CU 1310 communicates with DU 1330 via a midhaul link such as an F1 interface. DU 1330 may include a DU processor 1332. DU processor 1332 may include on-chip memory 1332'. In some aspects, DU 1330 may also include an additional memory module 1334 and a communication interface 1338. DU 1330 communicates with RU 1340 via a fronthaul link. RU 1340 may include a RU processor 1342. RU processor 1342 may include on-chip memory 1342'. In some aspects, RU 1340 may also include an additional memory module 1344, one or more transceivers 1346, an antenna 1380, and a communication interface 1348. RU 1340 communicates with UE 104. On-chip memory 1312', 1332', 1342' and additional memory modules 1314, 1334, 1344 may each be considered a computer-readable medium / memory. Each computer readable medium / memory may be non-transitory. Each of processors 1312, 1332, 1342 is responsible for general processing, including executing software stored on the computer readable medium / memory. The software, when executed by the corresponding processor, causes the processor to perform the various functions described above. The computer readable medium / memory may also be used to store data manipulated by the processor when executing the software.

[0141] As discussed above, component 199 is configured to send a first TDD UL DL slot format configuration in RRC signaling. The first TDD UL DL slot format configuration may indicate a communication type for a symbol set or a slot set. Component 199 may be further configured to send an indication of an adjusted type of at least one symbol in the symbol set or at least one slot in the slot set. The at least one symbol may be a D symbol or a U symbol based on the first time TDD UL DL slot format configuration, and the at least one slot may be a D slot or a U slot based on the first time TDD UL DL slot format configuration. Component 199 may be further configured to perform a combined Fig.10 or Fig.11 Any of the aspects described in the flowcharts of, and / or by Figure 7 1304. The component 199 may be within one or more processors of one or more of the CU 1310, the DU 1330, and the RU 1340. The component 199 may be one or more hardware components specifically configured to perform the process / algorithm, implemented by one or more processors configured to perform the process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. The network entity 1302 may include a variety of components configured for various functions. In one configuration, the network entity 1302 includes a component for sending a first TDD UL DL time slot format configuration in RRC signaling. The first TDD UL DL time slot format configuration may indicate a communication type of a symbol set or a time slot set. The network entity 1302 may also include a component for sending an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set. The at least one symbol may be a D symbol or a U symbol based on the first time TDD UL DL time slot format configuration, and the at least one time slot may be a D time slot or a U time slot based on the first time TDD UL DL time slot format configuration. The network entity 1302 may also include a method for performing the combination Fig.10 and Fig.11 Flowcharts describing aspects of the invention, and / or by Figure 7 1302. A component may be a component 199 of the network entity 1302 configured to perform the functions recited by the component. As described above, the network entity 1302 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Thus, in one configuration, the component may be a TX processor 316, an RX processor 370, and / or a controller / processor 375 configured to perform the functions recited by the component.

[0142] The present disclosure provides a method for wireless communication at a UE. The method may include receiving a first TDD UL DL time slot format configuration in RRC signaling. The first TDD UL DL time slot format configuration may indicate a communication type of a symbol set or a time slot set. The method also includes receiving an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set. The at least one symbol may be a D symbol or a U symbol based on a first time TDD UL DL time slot format configuration, and the at least one time slot may be a D time slot or a U time slot based on a first time TDD UL DL time slot format configuration. The method enables flexible utilization of transmission resources in wireless communication according to actual operation requirements. Therefore, the efficiency of wireless communication is improved.

[0143] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is merely an illustration of the exemplary method. It should be understood that the specific order or hierarchy of the blocks in the process / flowchart may be rearranged based on design preferences. Further, some blocks may be combined or omitted. The attached method claims provide the elements of the various blocks in a sample order, but are not limited to the specific order or hierarchy provided.

[0144] The foregoing 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. Therefore, the claims are not limited to the various aspects described herein, but should be given the full scope consistent with the language claims. Unless otherwise specified, reference to an element in the singular form does not mean "one and only one", but "one or more". Terms such as "if", "when" and "while" do not mean a direct temporal relationship or reaction. That is, these phrases, such as "when ...", do not mean an immediate action in response to the occurrence of an action or during the occurrence of an action, but simply imply that if the conditions are met, the action will occur, but no specific or immediate time limit is required for the occurrence of the action. The word "exemplary" is used herein to mean "used as an example, instance, or illustration". Any aspect described as "exemplary" herein is not necessarily interpreted as being preferred or having advantages over other aspects. Unless otherwise specified, 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 A, B and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" include any combination of A, B, and / or C, which may include multiple A, multiple B, or multiple 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 A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, where any such combination may contain one or more members of A, B, or C. A set should be interpreted as a set of elements, where the number of elements is one or more. Thus, for a set of X, X will include one or more elements. If the first device receives data from the second device or sends data to the second device, the data may be directly received / sent between the first device and the second device, or indirectly received / sent between the first device and the second device through a collection of devices. All structural and functional equivalents of the elements throughout the various aspects described in this disclosure that are known or will later be known to a person of ordinary skill in the art are expressly incorporated herein by reference and are covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims. Words such as "module", "mechanism", "element", "device" cannot replace the word "component". Therefore, no claim element will be understood as a component plus function unless the element is explicitly stated using the phrase "component for..."

[0145] As used herein, the phrase "based on" should not be interpreted as referring to a closed set of information, one or more conditions, one or more factors, etc. In other words, the phrase "based on A" (where "A" can be information, a condition, a factor, etc.) should be interpreted as "based at least on A" unless specifically stated differently.

[0146] The following aspects are merely illustrative and may be combined with other aspects or teachings described herein without limitation.

[0147] Aspect 1 is a method for wireless communication at a UE. The method includes receiving a first TDD UL DL time slot format configuration in RRC signaling, the first TDD UL DL time slot format configuration indicating the type of communication of a symbol set or a time slot set, the type of communication including one or more of uplink, downlink or flexible link; and receiving an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set. The at least one symbol for adjusting the type of the communication is a downlink symbol (D symbol) or an uplink symbol (U symbol) based on the first time TDD UL DL time slot format configuration, or the at least one time slot for adjusting the type of the communication is a downlink time slot (D slot) or an uplink time slot (U slot) based on the first time TDD UL DL time slot format configuration.

[0148] Aspect 2 is the method according to aspect 1, wherein the adjusted type is used for sub-band full duplex (SBFD) operation of the network entity in the at least one symbol or the at least one time slot.

[0149] Aspect 3 is a method according to any one of Aspects 1 to 2, wherein the indication is included in an RRC message, and the RRC message includes at least one of the following items: a second TDD UL DL time slot format configuration, which is common to multiple UEs or all UEs in the cell or is dedicated to the UE at least for the primary cell (PCell) of the SBFD-aware UE, or an updated TDD UL DL time slot format configuration, which is common to multiple UEs or all UEs in the cell or is dedicated to the UE at least for the PCell of the SBFD-aware UE.

[0150] Aspect 4 is a method according to aspect 3, wherein the first TDD UL DL time slot format is indicated in an RRC message included in a broadcast message, a multicast message, or a unicast message.

[0151] Aspect 5 is a method according to aspect 4, wherein the RRC message further includes one or more UE IDs or one or more UE group IDs of intended UEs of the RRC message.

[0152] Aspect 6 is a method according to aspect 1, wherein the indication is included in a DCI.

[0153] Aspect 7 is a method according to aspect 6, wherein the DCI is one of the following items: DCI with an enhanced DCI format that allows overwriting of the TDD UL DL time slot format configuration in the DCI; DCI carrying an updated TDD UL DL time slot format configuration; or DCI with a UE-specific or group-common DCI format.

[0154] Aspect 8 is a method according to aspect 1, wherein the indication is included in a MAC-CE.

[0155] Aspect 9 is a method according to aspect 8, wherein the MAC-CE is one of the following items: a MAC-CE having an enhanced MAC-CE format that allows overwriting of the TDD UL DL time slot format configuration in the MAC-CE; a MAC-CE carrying an updated TDD UL DL time slot format configuration; or a MAC-CE having a UE-specific or group-common MAC-CE format.

[0156] Aspect 10 is a method according to any one of Aspects 1 to 9, wherein the adjusted type indicates one or more of the following items: a previously indicated downlink symbol is changed to the uplink symbol, the previously indicated downlink symbol is changed to the flexible symbol, the previously indicated downlink time slot is changed to the uplink time slot, the previously indicated downlink time slot is changed to the flexible time slot, the previously indicated uplink symbol is changed to the downlink symbol, the previously indicated uplink symbol is changed to the flexible symbol, the previously indicated uplink time slot is changed to the downlink time slot, or the previously indicated uplink time slot is changed to the flexible time slot.

[0157] Aspect 11 is a method according to any one of aspects 1 to 9, wherein the indication indicates the adjusted type as a SBFD type symbol or a SBFD type slot.

[0158] Aspect 12 is a method according to any one of aspects 1 to 11, wherein the method further comprises identifying an error condition in response to the indication indicating a change in the downlink symbol or the downlink time slot in which a common downlink channel or a common downlink reference signal is scheduled. The change comprises the change to an uplink symbol, an uplink time slot, a flexible symbol, a flexible time slot, an SBFD type symbol, or an SBFD type time slot.

[0159] Aspect 13 is a method according to aspect 12, wherein the method further comprises skipping the adjusted type in response to the indication of the change in the downlink symbol or the downlink time slot in which the common downlink channel or the common downlink reference signal is scheduled.

[0160] Aspect 14 is a method according to Aspect 12, wherein the common downlink channel or the common downlink reference signal includes at least one of the following items: SSB, CORESET0, CSS PDCCH, PDSCH scheduled by CSS PDCCH, a reference signal common to multiple UEs or all UEs in a cell, or a semi-persistent scheduling opportunity common to the multiple UEs or all UEs in the cell.

[0161] Aspect 15 is a method according to any one of Aspects 1 to 14, wherein the method also includes identifying an error condition based on the uplink symbol or the uplink time slot scheduled using at least one of the following items in response to the indication indicating that an uplink symbol or an uplink time slot is changed to a downlink symbol, a downlink time slot, a flexible symbol, a flexible time slot, a sub-band full-duplex (SBFD) type symbol, or a SBFD type time slot: RO, SRS, or PUCCH.

[0162] Aspect 16 is an apparatus for performing wireless communications at a UE, the apparatus comprising: a memory; and at least one processor, the at least one processor being coupled to the memory and being configured to perform a method according to any one of Aspects 1 to 15 based at least in part on information stored in the memory.

[0163] Aspect 17 is an apparatus according to aspect 16, the apparatus also comprising at least one of a transceiver or an antenna, the transceiver or the antenna being coupled to the at least one processor and configured to receive the first TDD UL DL time slot format configuration and the indication of the adjusted type.

[0164] Aspect 18 is an apparatus for wireless communication, the apparatus comprising means for implementing the method according to any one of aspects 1 to 15.

[0165] Aspect 19 is a computer-readable medium (eg, a non-transitory computer-readable medium) storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement the method according to any one of aspects 1 to 15.

[0166] Aspect 20 is a method for wireless communication at a network entity. The method includes sending a first TDD UL DL time slot format configuration in RRC signaling, the first TDD UL DL time slot format configuration indicating the type of communication of a symbol set or a time slot set, the type of communication including one or more of uplink, downlink or flexible link; and sending an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set. The at least one symbol for adjusting the type of the communication is a downlink symbol (D symbol) or an uplink symbol (U symbol) based on the first time TDD UL DL time slot format configuration, or the at least one time slot for adjusting the type of the communication is a downlink time slot (D slot) or an uplink time slot (U slot) based on the first time TDD UL DL time slot format configuration.

[0167] Aspect 21 is a method according to aspect 20, wherein the adjusted type is for SBFD operation of the network entity in the at least one symbol or the at least one time slot.

[0168] Aspect 22 is a method according to Aspect 20, wherein the indication is included in an RRC message, and the RRC message includes at least one of the following items: a second TDD UL DL time slot format configuration, which is common to multiple UEs or all UEs in the cell or is dedicated to the UE at least for the PCell of the SBFD-aware UE, or an updated TDD UL DL time slot format configuration, which is common to multiple UEs or all UEs in the cell or is dedicated to the UE at least for the PCell of the SBFD-aware UE.

[0169] Aspect 23 is a method according to aspect 22, wherein the first TDD UL DL time slot format is indicated in an RRC message included in a broadcast message, a multicast message or a unicast message, and the RRC message also includes one or more expected UE IDs or one or more UE group IDs of the expected UEs of the RRC message.

[0170] Aspect 24 is a method according to aspect 20, wherein the indication is included in a DCI.

[0171] Aspect 25 is a method according to aspect 24, wherein the DCI is one of the following items: DCI with an enhanced DCI format that allows overwriting of the TDD UL DL time slot format configuration in the DCI; DCI carrying an updated TDD UL DL time slot format configuration; or DCI with a UE-specific or group-common DCI format.

[0172] Aspect 26 is a method according to aspect 20, wherein the indication is included in a MAC-CE.

[0173] Aspect 27 is a method according to aspect 26, wherein the MAC-CE is one of the following items: a MAC-CE having an enhanced MAC-CE format that allows overwriting of the TDD UL DL time slot format configuration in the MAC-CE; a MAC-CE carrying an updated TDD UL DL time slot format configuration; or a MAC-CE having a UE-specific or group-common MAC-CE format.

[0174] Aspect 28 is a method according to any one of Aspects 20 to 27, wherein the adjusted type indicates one or more of the following items: a previously indicated downlink symbol is changed to the uplink symbol, the previously indicated downlink symbol is changed to the flexible symbol, the previously indicated downlink time slot is changed to the uplink time slot, the previously indicated downlink time slot is changed to the flexible time slot, the previously indicated uplink symbol is changed to the downlink symbol, the previously indicated uplink symbol is changed to the flexible symbol, the previously indicated uplink time slot is changed to the downlink time slot, or the previously indicated uplink time slot is changed to the flexible time slot.

[0175] Aspect 29 is a method according to any one of aspects 20 to 27, wherein the indication indicates the adjusted type as a SBFD type symbol or a SBFD type slot.

[0176] Aspect 30 is a method according to any one of aspects 20 to 29, wherein the method further comprises avoiding indicating in the indication a change of a downlink symbol or a downlink time slot in which a common downlink channel or a common downlink reference signal is scheduled. The change comprises the change of an uplink symbol, an uplink time slot, a flexible symbol, a flexible time slot, an SBFD type symbol, or an SBFD type time slot.

[0177] Aspect 31 is a method according to aspect 30, wherein the common downlink channel or the common downlink reference signal includes at least one of the following items: SSB, CORESET0, CSS PDCCH, PDSCH scheduled by CSS PDCCH, a reference signal common to multiple UEs or all UEs in a cell, or a semi-persistent scheduling opportunity common to the multiple UEs or all UEs in the cell.

[0178] Aspect 32 is a method according to any one of Aspects 20 to 29, wherein the method also includes avoiding indicating in the indication that an uplink symbol or an uplink time slot is changed to a downlink symbol, a downlink time slot, a flexible symbol, a flexible time slot, a sub-band full duplex (SBFD) type symbol, or a SBFD type time slot based on the uplink symbol or the uplink time slot scheduled using at least one of the following items: RO, SRS, or PUCCH.

[0179] Aspect 33 is an apparatus for wireless communication at a network entity, the apparatus comprising: a memory; and at least one processor, the at least one processor being coupled to the memory and being configured to perform a method according to any one of Aspects 20 to 32 based at least in part on information stored in the memory.

[0180] Aspect 34 is an apparatus according to aspect 32, the apparatus also including at least one of a transceiver or an antenna, the transceiver or the antenna being coupled to the at least one processor and configured to send the first TDD UL DL time slot format configuration and the indication of the adjusted type.

[0181] Aspect 35 is an apparatus for wireless communication, the apparatus comprising means for implementing the method according to any one of aspects 20 to 32.

[0182] Aspect 36 is a computer-readable medium (eg, a non-transitory computer-readable medium) storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement the method according to any one of aspects 20 to 32.

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: Memory; and at least one processor coupled to the memory and configured to: receiving a first time division duplex (TDD) uplink (UL) downlink (DL) slot format configuration in radio resource control (RRC) signaling, the first TDD UL DL slot format configuration indicating a type of communication for a set of symbols or a set of slots, the type of communication comprising one or more of uplink, downlink, or flexible link; and Receive an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set, wherein the at least one symbol for adjusting the type of the communication is a downlink symbol (D symbol) or an uplink symbol (U symbol) configured based on the first time TDD UL DL time slot format, or the at least one time slot for adjusting the type of the communication is a downlink time slot (D time slot) or an uplink time slot (U time slot) configured based on the first time TDD UL DL time slot format.

2. The device according to claim 1, further comprising: at least one transceiver coupled to the at least one processor and configured to receive the first TDD UL DL slot format configuration and the indication of the adjusted type of the at least one symbol or the at least one slot, The adjusted type is used for a sub-band full duplex (SBFD) operation of a network entity in the at least one symbol or the at least one time slot.

3. The apparatus of claim 1 , wherein the indication is included in an RRC message, the RRC message comprising at least one of: a second TDD UL DL time slot format configuration, the second TDD UL DL time slot format configuration being common to a plurality of UEs or each UE in a cell or being dedicated to the UE at least for a primary cell (PCell) of a sub-band full duplex (SBFD) aware UE, or An updated TDD UL DL time slot format configuration, the updated TDD UL DL time slot format configuration being common to the multiple UEs or each UE in the cell or being dedicated to the UE at least for the PCell of the SBFD aware UE. 4 . The apparatus of claim 1 , wherein the first TDD UL DL slot format configuration is indicated in an RRC message included in a broadcast message, a multicast message, or a unicast message.

5. The apparatus of claim 4, wherein the RRC message further comprises one or more UE IDs or one or more UE group IDs of intended UEs of the RRC message.

6. The apparatus of claim 1, wherein the indication is included in downlink control information (DCI).

7. The apparatus of claim 6, wherein the DCI is one of: DCI format 2_0 that allows overriding of the TDD UL DL timeslot format configuration in the DCI; or A DCI format that carries an updated TDD UL DL timeslot format configuration and is dedicated to the UE or group.

8. The apparatus of claim 1, wherein the indication is included in a Medium Access Control - Control Element (MAC-CE).

9. The apparatus of claim 8, wherein the MAC-CE is one of: a first MAC-CE format that allows overwriting the TDD UL DL timeslot format configuration in the MAC-CE; or The second MAC-CE carries the updated TDD UL DL timeslot format configuration and is UE-specific or group-common.

10. The device of claim 1, wherein the adjusted type indicates one or more of: The previously indicated downlink symbol is changed to the uplink symbol, The previously indicated downlink symbol is changed to a flexible symbol, The previously indicated downlink time slot is changed to said uplink time slot, the previously indicated downlink time slot is changed to a flexible time slot, The previously indicated uplink symbol is changed to the downlink symbol, The previously indicated uplink symbol is changed to the flexible symbol, The previously indicated uplink time slot is changed to said downlink time slot, or The previously indicated uplink time slot is changed to the flexible time slot.

11. The device of claim 1, wherein the indication indicates the adjusted type as a sub-band full duplex (SBFD) type symbol or a SBFD type slot.

12. The apparatus of claim 1, wherein the at least one processor is further configured to: identifying an error condition in response to said indication indicating a change of said downlink symbol or said downlink time slot in which a common downlink channel or a common downlink reference signal is scheduled, The change comprises the change to the uplink symbol, the uplink time slot, a flexible symbol, a flexible time slot, a sub-band full duplex (SBFD) type symbol or a SBFD type time slot.

13. The apparatus of claim 12, wherein the at least one processor is further configured to: The adjusted type is skipped in response to the indication indicating the change of the downlink symbol or the downlink time slot in which the common downlink channel or the common downlink reference signal is scheduled.

14. The apparatus of claim 12, wherein the common downlink channel or the common downlink reference signal comprises at least one of: Synchronization Signal Block (SSB), Control resource set 0 (CORESET0), Common Search Space (CSS) Physical Downlink Control Channel (PDCCH), CSS PDCCH scheduled physical downlink shared channel (PDSCH), A reference signal common to multiple UEs or all UEs in a cell, or A semi-persistent scheduling opportunity common to the multiple UEs or all UEs in the cell.

15. The apparatus of claim 1, wherein the at least one processor is further configured to: In response to the indication indicating to change the uplink symbol or the uplink time slot to the downlink symbol, the downlink time slot, a flexible symbol, a flexible time slot, a sub-band full duplex (SBFD) type symbol, or a SBFD type time slot, identifying an error condition based on the uplink symbol or the uplink time slot being scheduled using at least one of: Random Access Opportunity (RO), Sounding Reference Signal (SRS), or Physical Uplink Control Channel (PUCCH).

16. An apparatus for wireless communication at a network entity, the apparatus comprising: Memory; and at least one processor coupled to the memory and configured to: transmitting a first time division duplex (TDD) uplink (UL) downlink (DL) slot format configuration in radio resource control (RRC) signaling, the first TDD UL DL slot format configuration indicating a type of communication of a symbol set or a slot set, the type of communication comprising one or more of uplink, downlink, or flexible link; and Sending an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set, wherein the at least one symbol for adjusting the type of the communication is a downlink symbol (D symbol) or an uplink symbol (U symbol) configured based on the first time TDD UL DL time slot format, or the at least one time slot for adjusting the type of the communication is a downlink time slot (D time slot) or an uplink time slot (U time slot) configured based on the first time TDD UL DL time slot format.

17. The apparatus according to claim 16, further comprising: at least one transceiver coupled to the at least one processor and configured to transmit the first TDD UL DL slot format configuration and the indication of the adjusted type of the at least one symbol or the at least one slot, The adjusted type is for a sub-band full-duplex (SBFD) operation of the network entity in the at least one symbol or the at least one time slot.

18. The apparatus of claim 16, wherein the indication is included in an RRC message, the RRC message comprising at least one of: a second TDD UL DL time slot format configuration, the second TDD UL DL time slot format configuration being common to a plurality of UEs or all UEs in a cell or being dedicated to the UE at least for a primary cell (PCell) of a sub-band full duplex (SBFD) aware UE, or An updated TDD UL DL time slot format configuration, the updated TDD UL DL time slot format configuration is common to the multiple UEs or all UEs in the cell or is dedicated to the UE at least for the PCell of the SBFD aware UE.

19. The apparatus of claim 16, wherein the first TDD UL DL time slot format configuration is indicated in an RRC message included in a broadcast message, a multicast message, or a unicast message, and wherein the RRC message further comprises one or more intended UE IDs or one or more UE group IDs of intended UEs of the RRC message.

20. The apparatus of claim 16, wherein the indication is included in downlink control information (DCI).

21. The apparatus of claim 20, wherein the DCI is one of: DCI format 2_0 that allows overriding of the TDD UL DL timeslot format configuration in the DCI; or A DCI format that carries updated TDD UL DL timeslot format configuration and is UE-specific or group-common.

22. The apparatus of claim 16, wherein the indication is included in a Medium Access Control - Control Element (MAC-CE).

23. The apparatus of claim 22, wherein the MAC-CE is one of: a first MAC-CE format that allows overwriting the TDD UL DL timeslot format configuration in the MAC-CE; or The second MAC-CE carries the updated TDD UL DL timeslot format configuration and is UE-specific or group-common.

24. The device of claim 16, wherein the adjusted type indicates one or more of: The previously indicated downlink symbol is changed to the uplink symbol, The previously indicated downlink symbol is changed to a flexible symbol, The previously indicated downlink time slot is changed to said uplink time slot, the previously indicated downlink time slot is changed to a flexible time slot, The previously indicated uplink symbol is changed to the downlink symbol, The previously indicated uplink symbol is changed to the flexible symbol, The previously indicated uplink time slot is changed to said downlink time slot, or The previously indicated uplink time slot is changed to the flexible time slot.

25. The device of claim 16, wherein the indication indicates the adjusted type as a sub-band full duplex (SBFD) type symbol or a SBFD type slot.

26. The apparatus of claim 16, wherein the at least one processor is further configured to: avoiding indicating in said indication a change of said downlink symbol or said downlink time slot in which a common downlink channel or a common downlink reference signal is scheduled, The change comprises the change to the uplink symbol, the uplink time slot, a flexible symbol, a flexible time slot, a sub-band full duplex (SBFD) type symbol or a SBFD type time slot.

27. The apparatus of claim 26, wherein the common downlink channel or the common downlink reference signal comprises at least one of: Synchronization Signal Block (SSB), Control resource set 0 (CORESET0), Common Search Space (CSS) Physical Downlink Control Channel (PDCCH), CSS PDCCH scheduled physical downlink shared channel (PDSCH), A reference signal common to multiple UEs or all UEs in a cell, or A semi-persistent scheduling opportunity common to the multiple UEs or all UEs in the cell.

28. The apparatus of claim 16, wherein the at least one processor is further configured to: refraining from indicating in the indication a change of the uplink symbol or the uplink time slot to the downlink symbol, the downlink time slot, a flexible symbol, a flexible time slot, a sub-band full duplex (SBFD) type symbol, or a SBFD type time slot based on the uplink symbol or the uplink time slot being scheduled using at least one of: Random Access Opportunity (RO), Sounding Reference Signal (SRS), or Physical Uplink Control Channel (PUCCH).

29. A method of wireless communication at a user equipment (UE), the method comprising: receiving a first time division duplex (TDD) uplink (UL) downlink (DL) slot format configuration in radio resource control (RRC) signaling, the first TDD UL DL slot format configuration indicating a type of communication for a set of symbols or a set of slots, the type of communication comprising one or more of uplink, downlink, or flexible link; and Receive an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set, wherein the at least one symbol for adjusting the type of the communication is a downlink symbol (D symbol) or an uplink symbol (U symbol) configured based on the first time TDD UL DL time slot format, or the at least one time slot for adjusting the type of the communication is a downlink time slot (D time slot) or an uplink time slot (U time slot) configured based on the first time TDD UL DL time slot format.

30. A method for wireless communication at a network entity, the method comprising: transmitting a first time division duplex (TDD) uplink (UL) downlink (DL) slot format configuration in radio resource control (RRC) signaling, the first TDD UL D1 slot format configuration indicating a type of communication of a symbol set or a slot set, the type of communication comprising one or more of uplink, downlink, or flexible link; and Sending an indication of an adjusted type of at least one symbol in the symbol set or at least one time slot in the time slot set, wherein the at least one symbol for adjusting the type of the communication is a downlink symbol (D symbol) or an uplink symbol (U symbol) configured based on the first time TDD UL DL time slot format, or the at least one time slot for adjusting the type of the communication is a downlink time slot (D time slot) or an uplink time slot (U time slot) configured based on the first time TDD UL DL time slot format.

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