Indicating subband configuration in subband full duplex operation

Abstract

Certain aspects of the present disclosure provide techniques for indicating subband configuration in subband full duplex (SBFD) operation. An example method, which can be performed by a user equipment (UE), includes receiving signaling indicating at least one of a time position or a frequency position of at least one uplink (UL) subband and at least one downlink (DL) subband for subband full duplex (SBFD) communication; and performing SBFD communication in one or more symbols or slots based on the signaling.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. Patent Application No. 18 / 309,459, filed on April 28, 2023, which claims the benefit and priority of U.S. Provisional Patent Application No. 63 / 397,655, filed on August 12, 2022, both of which are assigned to the assignee of this application and are incorporated herein by reference in their entirety as if fully set forth below and for all applicable purposes. Background Art Technical Field

[0003] Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for indicating sub-band configuration in sub-band full-duplex (SBFD) operations.

[0004] Related technologies

[0005] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts or other similar types of services. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available wireless communication system resources.

[0006] Although wireless communication systems have made tremendous technical progress over the years, challenges still exist. For example, complex and dynamic environments can still attenuate or block signals between wireless transmitters and wireless receivers. Therefore, there is a continuous desire to improve the technical performance of wireless communication systems, including, for example: improving the speed and data carrying capacity of communications, improving the efficiency of using shared communication media, reducing the power used by transmitters and receivers when performing communications, improving the reliability of wireless communications, avoiding redundant transmission and / or reception and related processing, improving the coverage area of ​​wireless communications, increasing the number and types of devices that can access wireless communication systems, increasing the ability of different types of devices to communicate with each other, increasing the number and types of wireless communication media available for use, etc. Therefore, there is a need to further improve wireless communication systems to overcome the aforementioned technical challenges and other challenges. Summary of the invention

[0007] One aspect provides a method for wireless communication by a user equipment (UE). The method includes: receiving signaling indicating at least one of a time position or a frequency position of at least one uplink (UL) subband and at least one downlink (DL) subband for subband full duplex (SBFD) communication; and performing SBFD communication in one or more symbols or time slots based on the signaling.

[0008] Another aspect provides a method for wireless communication by a network entity. The method includes: sending signaling indicating at least one of a time position or a frequency position of at least one UL subband and at least one DL subband for SBFD communication; and performing SBFD communication in one or more symbols or time slots based on the signaling.

[0009] In yet another aspect, an apparatus for wireless communication at a user equipment (UE) is provided. The apparatus includes: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the UE to: receive signaling indicating at least one of a time position or a frequency position of at least one uplink (UL) subband and at least one downlink (DL) subband for subband full duplex (SBFD) communication; and perform SBFD communication in one or more symbols or time slots based on the signaling.

[0010] In yet another aspect, an apparatus for wireless communication at a network entity is provided. The apparatus includes: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the network entity to: send signaling indicating at least one of a time position or a frequency position of at least one UL subband and at least one DL subband for SBFD communication; and perform SBFD communication in one or more symbols or time slots based on the signaling.

[0011] Other aspects provide: an apparatus operable to, configured to, or otherwise adapted to perform any one or more of the foregoing methods and / or those described elsewhere herein; a non-transitory computer-readable medium comprising instructions that, when executed by a processor of the apparatus, cause the apparatus to perform the foregoing methods and those described elsewhere herein; a computer program product embodied on a computer-readable storage medium, the computer-readable storage medium comprising: code for performing the foregoing methods and those described elsewhere herein; and / or an apparatus comprising components for performing the foregoing methods and those described elsewhere herein. By way of example, an apparatus may include a processing system, a device having a processing system, or a processing system cooperating through one or more networks.

[0012] For purposes of illustration, the following detailed description and drawings set forth certain features. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings depict certain features of the various aspects described herein and should not be considered to limit the scope of the disclosure.

[0014] Figure 1 An example wireless communication network is depicted.

[0015] Figure 2 An example disaggregated base station architecture is depicted.

[0016] Figure 3 Aspects of an example base station and example user equipment are depicted.

[0017] Figure 4A , Figure 4B , Figure 4C and Figure 4D Various example aspects of data structures for a wireless communication network are described.

[0018] Figure 5 Depicted are example subband configurations of component carriers during time slots in accordance with aspects of the present disclosure.

[0019] Figure 6 Network entities operating in full-duplex mode according to aspects of the present disclosure are depicted in block form.

[0020] Figure 7 Depicted in block form are a gNodeB and two user equipments (UEs) performing sub-band full-duplex (SBFD) operations in accordance with aspects of the present disclosure.

[0021] Figure 8 Depicted is an example call flow for communications between a network entity and a UE in a network.

[0022] Fig. 9 Depicted is an example call flow for communications between a network entity and a UE in a network.

[0023] Fig. 10A , Fig. 10B , Fig. 10C and Fig. 10D Depicted are example subband frequency configuration patterns that do not include flexible subbands in accordance with aspects of the present disclosure.

[0024] Fig.11A , Fig. 11B and Fig. 11C Depicted are example subband frequency configuration patterns including flexible subbands in accordance with aspects of the present disclosure.

[0025] Fig. 12A and Fig. 12B Depicted are example timelines 1200 and 1250 of subband configurations in accordance with aspects of the present disclosure.

[0026] Fig.13 Depicted is an example call flow for communications between a network entity and a UE in a network.

[0027] Fig.14A and Fig. 14BDepicted are example semi-static uplink (UL) bandwidth part (BWP) switching patterns in accordance with aspects of the present disclosure.

[0028] Fig.15 Depicted are example downlink (DL) BWPs in accordance with aspects of the present disclosure.

[0029] Fig.16 Depicted are frequency resources of an example BWP in accordance with aspects of the present disclosure.

[0030] Fig.17 Depicted are frequency resources of example subbands in an example DL BWP in accordance with aspects of the present disclosure.

[0031] Fig.18 Depicted are frequency resources for example subbands in an example UL BWP in accordance with aspects of the present disclosure.

[0032] Fig.19 A method for wireless communication is described.

[0033] Fig. 20 A method for wireless communication is described.

[0034] Fig.21 Aspects of an example communications device are depicted.

[0035] Fig. 22 Aspects of an example communications device are depicted. DETAILED DESCRIPTION

[0036] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for indicating sub-band configuration in sub-band full-duplex (SBFD) operation.

[0037] In a typical cellular communication system operating with time domain duplex (TDD), a network (e.g., a network entity, such as a base station (BS) or a node of a decomposed BS) may indicate to a user equipment (UE) a configuration of a transmission direction (e.g., uplink (UL) or downlink (DL)) for a time slot or subframe of a frame, which is referred to as a TDD UL / DL configuration. This TDD UL / DL configuration may be broadcast in a system information block (SIB) in a cell. Changing the TDD UL / DL configuration in a cell is typically accomplished by broadcasting a SIB with a new TDD UL / DL configuration in the cell. Broadcasting a SIB with a changed TDD UL / DL configuration typically involves paging all UEs in the cell to notify the UE of the change and therefore takes some time to complete. In various aspects of the present disclosure, a cell may operate using subband full-duplex (SBFD) communication, in which a network entity uses some antennas to send one or more DL signals to one or more UEs via one or more subbands of a component carrier (CC), while using other antennas to receive UL signals from other UEs via other subbands of the CC. SBFD communications allow flexibility in scheduling communications, but this flexibility is very limited if the SBFD configuration is communicated to the UE via the SIB, as is done with TDD UL / DL configuration.

[0038] In various aspects of the present disclosure, techniques are provided for sending SBFD configuration to UEs in a cell without using SIB broadcast.The SBFD configuration is conveyed to the UE via a medium access control (MAC) control element (MAC-CE) or downlink control information (DCI).

[0039] Sending SBFD configuration via MAC-CE or DCI can achieve and / or improve the flexibility of SBFD configuration. Improving the flexibility of SBFD communication can increase the UL duty cycle in the cell for at least some UEs and reduce the latency in the cell because the UE can receive DL signals in only UL time slots. Improved SBFD communication can also produce UL coverage improvement. In addition, SBFD can improve system capacity, resource utilization and / or spectrum efficiency. SBFD can also achieve flexible and dynamic UL / DL resource adaptation in a robust manner according to the UL and DL services in the cell.

[0040] Introduction to wireless communication networks

[0041] The techniques and methods described herein can be used in various wireless communication networks. Although various aspects may be described herein using terms commonly associated with 3G, 4G and / or 5G wireless technologies, various aspects of the present disclosure may also be applicable to other communication systems and standards not explicitly mentioned herein.

[0042] Figure 1 An example of a wireless communication network 100 is depicted in which various aspects described herein may be implemented.

[0043] In general, the wireless communication network 100 includes various network entities (alternatively, network elements or network nodes). A network entity is typically a communication device and / or a communication function performed by a communication device (e.g., user equipment (UE), base station (BS), component of a BS, server, etc.). For example, various functions of a network and various devices associated with and interacting with the network may be considered network entities. In addition, the wireless communication network 100 includes ground aspects, such as ground-based network entities (e.g., BS 102), and non-ground aspects, such as satellites 140 and aircraft 145, which may include airborne network entities (e.g., one or more BSs) capable of communicating with other network elements (e.g., ground BSs) and user equipment.

[0044] In the depicted example, the wireless communication network 100 includes a BS 102, a UE 104, and one or more core networks (such as an evolved packet core (EPC) 160 and a 5G core (5GC) network 190) that interoperate to provide communication services over various communication links (including wired links and wireless links).

[0045] Figure 1 Various example UEs 104 are depicted, which may more generally include: a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player, a camera, a game console, a tablet computer, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, an Internet of Things (IoT) device, an Always-On (AON) device, an edge processing device, or other similar devices. UE 104 may also be more generally referred to as a mobile device, a wireless device, a wireless communication device, a station, a mobile station, a subscriber station, a mobile subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a remote device, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, and other user equipment.

[0046] BS 102 wirelessly communicates with (e.g., transmits signals to or receives signals from) UE 104 via communication link 120. Communication link 120 between BS 102 and UE 104 may include uplink (UL) (also referred to as a reverse link) transmissions from UE 104 to BS 102 and / or downlink (DL) (also referred to as a forward link) transmissions from BS 102 to UE 104. In various aspects, communication link 120 may employ multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity.

[0047] BS 102 may generally include: NodeB, enhanced NodeB (eNB), next generation enhanced NodeB (ng-eNB), next generation NodeB (gNB or gNodeB), access point, base transceiver station, radio base station, radio transceiver, transceiver function, transmit / receive point, and / or other base stations. Each of BSs 102 may provide communication coverage for a corresponding geographic coverage area 110, which may sometimes be referred to as a cell, and may overlap in some cases (e.g., a small cell 102' may have a coverage area 110' that overlaps with a coverage area 110 of a macro cell). For example, a BS may provide communication coverage for a macro cell (covering a relatively large geographic area), a pico cell (covering a relatively small geographic area, such as a stadium), a femto cell (relatively small geographic area (e.g., a home)), and / or other types of cells.

[0048] Although BS 102 is depicted as a single communication device in various aspects, BS 102 can be implemented in various configurations. For example, one or more components of the base station may be decomposed, including a central unit (CU), one or more distributed units (DU), one or more radio units (RU), a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, to name a few examples. In another example, various aspects of the base station may be virtualized. More generally, a base station (e.g., BS 102) may include components located at a single physical location or components located at various physical locations. In examples where the base station includes components located at various physical locations, the various components may each perform a function so that the various components together implement functionality similar to that of a base station located at a single physical location. In some aspects, a base station including components located at various physical locations may be referred to as a decomposed radio access network architecture (such as an open RAN (O-RAN) or virtualized RAN (VRAN) architecture). Figure 2 An example decomposed base station architecture is depicted and described.

[0049] Different BSs 102 within the wireless communication network 100 may also be configured to support different radio access technologies (such as 3G, 4G, and / or 5G). For example, a BS 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). A BS 102 configured for 5G (e.g., 5G NR or Next Generation RAN (NG-RAN)) may interface with the 5GC 190 via a second backhaul link 184. The BSs 102 may communicate with each other directly or indirectly (e.g., through the EPC 160 or the 5GC 190) over a third backhaul link 134 (e.g., an X2 interface), which may be wired or wireless.

[0050] The wireless communication network 100 may subdivide the electromagnetic spectrum into various categories, frequency bands, channels, or other characteristics. In some aspects, the subdivision is provided based on wavelength and frequency, where frequency may also be referred to as a carrier, subcarrier, channel, tone, or subband. For example, 3GPP currently defines frequency range 1 (FR1) as including 410 MHz to 7125 MHz, which is often (interchangeably) referred to as "below 6 GHz". Similarly, 3GPP currently defines frequency range 2 (FR2) as including 24,250 MHz to 52,600 MHz, which is sometimes (interchangeably) referred to as "millimeter wave" ("mmW" or "mmWave"). A base station (e.g., a mmWave base station such as BS 180) configured to communicate using mmWave / near mmWave radio bands may utilize beamforming (e.g., 182) with a UE (e.g., 104) to improve path loss and range.

[0051] The communication link 120 between the BS 102 and, for example, the UE 104 may be through one or more carriers, which may have different bandwidths (e.g., 5 MHz, 10 MHz, 15 MHz, 20 MHz, 100 MHz, 400 MHz, and / or other MHz) and may be aggregated in various aspects. The carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​than for UL).

[0052] Communications using higher frequency bands may have higher path loss and shorter range than communications at lower frequencies. Figure 1180) may utilize beamforming 182 with UE 104 to improve path loss and range. For example, BS 180 and UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming. In some cases, BS 180 may send beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 may receive beamformed signals from BS 180 in one or more receive directions 182". UE 104 may also send beamformed signals to BS 180 in one or more transmit directions 182". BS 180 may also receive beamformed signals from UE 104 in one or more receive directions 182'. BS 180 and UE 104 may then perform beam training to determine an optimal receive direction and an optimal transmit direction for each of BS 180 and UE 104. It is noteworthy that the transmit direction and receive direction of BS 180 may be the same or different. Similarly, the transmit direction and receive direction of UE 104 may be the same or different.

[0053] Wireless communication network 100 also includes Wi-Fi AP 150 that communicates with Wi-Fi station (STA) 152 via communication link 154 in, for example, the 2.4 GHz and / or 5 GHz unlicensed spectrum.

[0054] Certain UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. 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), a physical sidelink control channel (PSCCH), and / or a physical sidelink feedback channel (PSFCH).

[0055] The EPC 160 may include various functional components, including: a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and / or a packet data network (PDN) gateway 172, such as in the depicted example. The MME 162 may communicate with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. In general, the MME 162 provides bearer and connection management.

[0056] Generally speaking, user Internet Protocol (IP) packets are delivered through the Serving Gateway 166, which itself is connected to the PDN Gateway 172. The PDN Gateway 172 provides UE IP address allocation and other functions. The PDN Gateway 172 and the BM-SC 170 are connected to the IP Services 176, which may include, for example, the Internet, an Intranet, an IP Multimedia Subsystem (IMS), a Packet Switched (PS) streaming media service, and / or other IP services.

[0057] The BM-SC 170 may provide functionality for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS delivery, may be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and / or may be used to schedule MBMS delivery. The MBMS Gateway 168 may be used to distribute MBMS services to BSs 102 belonging to a multicast broadcast single frequency network (MBSFN) area broadcasting a specific service, and / or may be responsible for session management (start / stop) and for collecting eMBMS related charging information.

[0058] 5GC 190 may include various functional components, including: access and mobility management function (AMF) 192, other AMFs 193, session management function (SMF) 194, and user plane function (UPF) 195. AMF 192 may communicate with unified data management (UDM) 196.

[0059] AMF 192 is a control node that handles signaling between UE 104 and 5GC 190. AMF 192 provides, for example, Quality of Service (QoS) flow and session management.

[0060] Internet Protocol (IP) packets are delivered through UPF 195, which is connected to IP Services 197 and provides IP address allocation for UEs and other functions for 5GC 190. IP Services 197 may include, for example, the Internet, Intranet, IMS, PS streaming services, and / or other IP services.

[0061] In various aspects, a network entity or network node may be implemented as a converged base station, a decomposed base station, a component of a base station, an integrated access and backhaul (IAB) node, a relay node, a sidelink node, to name a few examples.

[0062] Figure 2An example disaggregated base station 200 architecture is depicted. The disaggregated base station 200 architecture may include one or more central units (CUs) 210 that may communicate directly with a core network 220 via a backhaul link, or indirectly with the core network 220 through one or more disaggregated base station units, such as a near real-time (near-RT) RAN intelligent controller (RIC) 225 via an E2 link, or a non-real-time (non-RT) RIC 215 associated with a service management and orchestration (SMO) framework 205, or both. The CU 210 may communicate with one or more distributed units (DUs) 230 via respective midhaul links, such as an F1 interface. The DU 230 may communicate with one or more radio units (RUs) 240 via respective fronthaul links. The RU 240 may communicate with respective UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 240.

[0063] Each of the units (e.g., CU 210, DU 230, RU 240, and near-RT RIC 225, non-RT RIC 215, and SMO framework 205) may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as 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 or send signals to one or more of the other units via a wired transmission medium. Additionally or alternatively, these units may include a wireless interface that may include a receiver, a transmitter, or a transceiver (such as a radio frequency (RF) transceiver) configured to receive signals on a wireless transmission medium or to send signals to one or more of the other units, or both.

[0064] In some aspects, CU 210 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 configured to communicate signals with other control functions hosted by CU 210. CU 210 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP)), control plane functionality (e.g., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 210 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 210 may be implemented to communicate with DU230 for network control and signaling.

[0065] DU 230 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 240. In some aspects, DU 230 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.) depending at least in part on a functional split, such as a functional split defined by the 3rd Generation Partnership Project (3GPP). In some aspects, DU 230 may further 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 230 or with control functions hosted by CU 210.

[0066] The lower layer functionality may be implemented by one or more RUs 240. In some deployments, a RU 240 controlled by a DU 230 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 a functional split (such as a lower layer functional split). In such an architecture, the RU 240 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 control plane and user plane communications with the RU 240 may be controlled by the corresponding DU 230. In some scenarios, this configuration may enable the implementation of the DU 230 and the CU 210 in a cloud-based RAN architecture (such as a vRAN architecture).

[0067] The SMO framework 205 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 205 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 205 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 290) to perform network element lifecycle management (such as instantiating 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 210, DU 230, RU 240, and near-RT RIC 225. In some specific implementations, the SMO framework 205 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 211) via the O1 interface. Additionally, in some specific implementations, the SMO framework 205 may communicate directly with one or more RUs 240 via the O1 interface. The SMO framework 205 may also include a non-RT RIC 215 configured to support the functionality of the SMO framework 205 .

[0068] The non-RT RIC 215 may be configured to include logic functions that implement non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 225. The non-RT RIC 215 may be coupled to or in communication with the near-RT RIC 225 (such as via an A1 interface). The near-RT RIC 225 may be configured to include logic functions that implement 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 210, one or more DUs 230, or both, and the O-eNB with the near-RT RIC 225.

[0069] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 225, the non-RT RIC 215 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 225 and may be received at the SMO framework 205 or the non-RT RIC 215 from a non-network data source or from a network function. In some examples, the non-RT RIC 215 or the near-RT RIC 225 may be configured to regulate RAN behavior or performance. For example, the non-RT RIC 215 may monitor long-term trends and patterns for performance and employ AI / ML models to perform corrective actions through the SMO framework 205 (such as via reconfiguration of O1) or via creation of RAN management policies (such as A1 policies).

[0070] Figure 3 Aspects of an example BS 102 and UE 104 are depicted.

[0071] In general, BS 102 includes various processors (e.g., 320, 330, 338, and 340), antennas 334a to 334t (collectively 334), transceivers 332a to 332t (collectively 332) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., data source 312) and wireless reception of data (e.g., data sink 339). For example, BS 102 can transmit and receive data between BS 102 and UE 104. BS 102 includes a controller / processor 340 that can be configured to implement various functions described herein related to wireless communication.

[0072] In general, the UE 104 includes various processors (e.g., 358, 364, 366, and 380), antennas 352a to 352r (collectively 352), transceivers 354a to 354r (collectively 354) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., retrieved from a data source 362) and wireless reception of data (e.g., provided to a data sink 360). The UE 104 includes a controller / processor 380 that can be configured to implement various functions described herein related to wireless communications.

[0073] Regarding example downlink transmissions, BS 102 includes a transmit processor 320 that can receive data from a data source 312 and control information from a controller / processor 340. The control information can be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical HARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), and / or other channels. In some examples, the data can be for a physical downlink shared channel (PDSCH).

[0074] The transmit processor 320 may process (e.g., encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. The transmit processor 320 may also generate reference symbols (such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a PBCH demodulation reference signal (DMRS), and a channel state information reference signal (CSI-RS)).

[0075] The transmit (TX) multiple-input multiple-output (MIMO) processor 330 may perform spatial processing (e.g., pre-coding) on ​​data symbols, control symbols, and / or reference symbols, where applicable, and may provide an output symbol stream to a modulator (MOD) in transceivers 332a to 332t. Each modulator in transceivers 332a to 332t may process a corresponding output symbol stream to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signals from the modulators in transceivers 332a to 332t may be transmitted via antennas 334a to 334t, respectively.

[0076] To receive downlink transmissions, UE 104 includes antennas 352a through 352r that can receive downlink signals from BS 102 and can provide received signals to demodulators (DEMODs) in transceivers 354a through 354r, respectively. Each demodulator in transceivers 354a through 354r can condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator can further process the input samples to obtain received symbols.

[0077] A MIMO detector 356 may obtain received symbols from all demodulators in transceivers 354a through 354r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 358 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 104 to a data sink 360, and provide decoded control information to a controller / processor 380.

[0078] With respect to example uplink transmissions, the UE 104 also includes a transmit processor 364 that may receive and process data from a data source 362 (e.g., for a PUSCH) and control information from a controller / processor 380 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 364 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 364 may be pre-decoded by a TX MIMO processor 366, if applicable, further processed by modulators in the transceivers 354a to 354r (e.g., for SC-FDM), and transmitted to the BS 102.

[0079] At BS 102, uplink signals from UE 104 may be received by antennas 334 a through 334 t, processed by demodulators in transceivers 332 a through 332 t, detected by MIMO detector 336 if applicable, and further processed by receive processor 338 to obtain decoded data and decoded control information transmitted by UE 104. Receive processor 338 may provide decoded data to data sink 339 and decoded control information to controller / processor 340.

[0080] Memories 342 and 382 may store data and program codes for BS 102 and UE 104, respectively.

[0081] The scheduler 344 may schedule UEs to transmit data on the downlink and / or uplink.

[0082] In various aspects, the BS 102 may be described as transmitting and receiving various types of data associated with the methods described herein. In these contexts, "transmitting" may refer to various mechanisms for outputting data, such as outputting data from a data source 312, a scheduler 344, a memory 342, a transmit processor 320, a controller / processor 340, a TX MIMO processor 330, transceivers 332a to 332t, antennas 334a to 334t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as obtaining data from antennas 334a to 334t, transceivers 332a to 332t, an RX MIMO detector 336, a controller / processor 340, a receive processor 338, a scheduler 344, a memory 342, and / or other aspects described herein.

[0083] In various aspects, the UE 104 may also be described as sending and receiving various types of data associated with the methods described herein. In these contexts, "sending" may refer to various mechanisms for outputting data, such as outputting data from a data source 362, a memory 382, ​​a transmit processor 364, a controller / processor 380, a TX MIMO processor 366, a transceiver 354a to 354t, an antenna 352a to 352t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as obtaining data from an antenna 352a to 352t, a transceiver 354a to 354t, a RX MIMO detector 356, a controller / processor 380, a receive processor 358, a memory 382, ​​and / or other aspects described herein.

[0084] In some aspects, the processor may be configured to perform various operations (such as those associated with the methods described herein) and respectively send (output) data to another interface configured to send data or receive (obtain) data from another interface configured to receive data.

[0085] Figure 4A , Figure 4B , Figure 4C and Figure 4D Describes a method for use in a wireless communication network such as Figure 1 Various aspects of the data structure of the wireless communication network 100).

[0086] Specifically, Figure 4A is a diagram 400 illustrating an example of a first subframe within a 5G (e.g., 5G NR) frame structure, Figure 4B is a diagram 430 illustrating an example of a DL channel within a 5G subframe, Figure 4C is a diagram 450 illustrating an example of a second subframe within a 5G frame structure, and Figure 4D FIG480 is a diagram illustrating an example of UL channels within a 5G subframe.

[0087] Wireless communication systems can utilize orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) on both the uplink and downlink. Such systems can also support half-duplex operation using time division duplex (TDD). OFDM and single carrier frequency division multiplexing (SC-FDM) can be used to maximize the system bandwidth (e.g., Figure 4B and Figure 4D The modulation symbols may be transmitted in the frequency domain using OFDM and / or in the time domain using SC-FDM.

[0088] The wireless communication frame structure may be frequency division duplex (FDD), where for a particular set of subcarriers, subframes within the subcarrier set are dedicated to either DL or UL. The wireless communication frame structure may also be time division duplex (TDD), where for a particular set of subcarriers, subframes within the subcarrier set are dedicated to both DL and UL.

[0089] exist Figure 4A and Figure 4C In the wireless communication frame structure, TDD is used, where D is DL, U is UL, and X is used flexibly between DL / UL. The UE can configure the time slot format (dynamically configured by DL control information (DCI) or semi-statically / statically configured by radio resource control (RRC) signaling) through the received time slot format indicator (SFI). In the depicted example, the 10ms frame is divided into 10 equally sized 1ms subframes. Each subframe may include one or more time slots. In some examples, each time slot may include 7 or 14 symbols, depending on the time slot format. The subframe may also include micro-slots, which typically have fewer symbols than the entire time slot. Other wireless communication technologies may have different frame structures and / or different channels.

[0090] In certain aspects, the number of slots within a subframe is based on the slot configuration and parameter set. For example, for slot configuration 0, different parameter sets (μ) 0 to 5 allow for 1, 2, 4, 8, 16, and 32 slots per subframe, respectively. For slot configuration 1, different parameter sets 0 to 2 allow for 2, 4, and 8 slots per subframe, respectively. Thus, for slot configuration 0 and parameter set μ, there are 14 symbols / slot and 2μ slots / subframe. The subcarrier spacing and symbol length / duration are a function of the parameter set. The subcarrier spacing may be equal to 2 μ × 15kHz, where μ is parameter set 0 to 5. Thus, parameter set μ=0 has a subcarrier spacing of 15kHz, and parameter set μ=5 has a subcarrier spacing of 480kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figure 4A , Figure 4B , Figure 4C and Figure 4D An example is provided for slot configuration 0 with 14 symbols per slot and 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 approximately 16.67 μs.

[0091] like Figure 4A , Figure 4B , Figure 4C and Figure 4DAs depicted, a resource grid may be used to represent a frame structure. Each slot includes a resource block (RB) (also referred to as a physical RB (PRB)) extending, for example, 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.

[0092] like Figure 4A As illustrated in FIG. 1 , some of the REs carry data for UEs (eg Figure 1 and Figure 3 The RS may include a demodulation RS (DMRS) and / or 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 / or a phase tracking RS (PT-RS).

[0093] Figure 4B Examples of various DL channels within a subframe of a frame are illustrated.The Physical Downlink Control Channel (PDCCH) carries DCI within one or more Control Channel Elements (CCEs), each CCE comprising, for example, nine RE Groups (REGs), each REG comprising, for example, four consecutive REs in an OFDM symbol.

[0094] The primary synchronization signal (PSS) may be in symbol 2 of a particular subframe of a frame. The PSS is transmitted by a UE (e.g., Figure 1 and Figure 3 104) is used to determine subframe / symbol timing and physical layer identification.

[0095] The 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 radio frame timing.

[0096] Based on the physical layer identifier and the physical layer cell identifier group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the aforementioned DMRS. 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. 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 (such as system information blocks (SIBs)) that is not sent via the PBCH, and / or paging messages.

[0097] like Figure 4CAs illustrated in , some of the REs carry DMRS for channel estimation at the base station (indicated as R for a specific configuration, but other DMRS configurations are possible). The UE may send a DMRS for the PUCCH and a DMRS for the PUSCH. The PUSCH DMRS may be sent, for example, in the first one or two symbols of the PUSCH. The PUCCH DMRS may be sent in different configurations depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used. UE104 may send a sounding reference signal (SRS). The SRS may be sent, for example, 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.

[0098] Figure 4D Examples 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 HARQ ACK / NACK feedback. The PUSCH carries data and may additionally be used to carry buffer status reports (BSRs), power headroom reports (PHRs), and / or UCI.

[0099] Aspects related to indicating sub-band configuration in sub-band full-duplex operation

[0100] In a typical cellular communication system using time domain duplex (TDD) operation, a network (e.g., a network entity, such as a BS or a node of a decomposed BS) may indicate to a UE a TDD UL / DL configuration for a transmission direction of a time slot or a subframe of a frame. Such a TDD UL / DL configuration may be broadcast in a SystemInformationBlockType1 (SIB1) in a cell and may have a form similar to DDDDDDDFUU, where each "D" indicates a time slot for DL ​​transmission, each "U" indicates a time slot for UL transmission, and each "F" indicates a flexible time slot that may be dynamically switched between being used for UL transmission and DL transmission.

[0101] Changing the TDD UL / DL configuration in a cell is typically accomplished by broadcasting SIB1 with the new TDD UL / DL configuration in the cell. Broadcasting SIB1 with the changed TDD UL / DL configuration typically involves paging all UEs in the cell to inform the UEs of the change and thus may take some time to complete.

[0102] In various aspects of the present disclosure, a cell may operate using sub-band full-duplex (SBFD) communication, in which a network entity uses some antennas to send one or more DL signals to one or more UEs via one or more sub-bands of a component carrier (CC), while using other antennas to receive UL signals from other UEs via other sub-bands of the CC. SBFD communication may increase the UL duty cycle in the cell for at least some UEs, which may result in reduced latency because the UE may be able to receive DL signals in UL-only time slots and produce UL coverage improvements. In addition, SBFD may improve system capacity, resource utilization, and / or spectral efficiency. SBFD may also enable flexible and dynamic UL / DL resource adaptation in a robust manner based on UL and DL traffic in the cell.

[0103] Figure 5 An example subband configuration 500 of component carriers during a time slot in accordance with aspects of the present disclosure is depicted. In the example subband configuration, a UL subband 504 is configured between two DL subbands 502 and 506. Guard bands (GBs) 510 and 512 separate the UL subband from each of the two DL subbands.

[0104] Figure 6 A scenario 600 of a network entity (e.g., BS 102) operating in full-duplex mode according to aspects of the present disclosure is depicted in block form. As illustrated, a first antenna 602 of the network entity transmits a signal using a first beam 612, while a second antenna 604 of the network entity receives another signal using a second beam 614. The first antenna may be separated from the second antenna by a distance d. A signal from the first antenna may be directly received by the second antenna, causing self-interference with another signal received by the second antenna. Additionally, the first signal may be reflected from an object 620 in the environment, and the reflected signal may also be received by the second antenna, causing clutter 630 to affect the second antenna's reception of other signals. Both self-interference and clutter may be at least partially mitigated by having the signal transmitted from the first antenna be on a different subband than the signal received by the second antenna.

[0105] Figure 7 A gNB 700 and two UEs 712 and 714 performing SBFD operations according to aspects of the present disclosure are depicted in block form. As illustrated, a first antenna 702 of the gNB transmits a signal on a first subband using a first beam 722, while a second antenna 704 of a network entity receives another signal on a second subband using a second beam 724. As illustrated, the first signal may interfere with the reception of the second signal by the second antenna.

[0106] According to various aspects of the present disclosure, in order to support SBFD operation in a cell, a network entity (e.g., BS 102) may send signaling indicating at least one of a time position or a frequency position of at least one uplink (UL) subband and at least one downlink (DL) subband for subband full duplex (SBFD) communication in the cell. The network entity may then perform SBFD communication in one or more transmission time intervals (TTIs, e.g., time slots or subframes) based on the signaling.

[0107] In various aspects of the present disclosure, to support SBFD operation in a cell, a UE (e.g., UE 104) may receive signaling indicating at least one of a time position or a frequency position of at least one uplink (UL) subband and at least one downlink (DL) subband for SBFD communication in the cell. The UE may then perform SBFD communication in one or more transmission time intervals (TTIs, e.g., time slots or subframes) based on the signaling.

[0108] Example Operations of Entities in a Communication Network

[0109] Figure 8 An example call flow 800 is depicted for communication between a network entity 802 and a user equipment (UE) 804 in a network. In some aspects, the network entity 802 may be related to Figure 1 and Figure 3 Describe and describe BS 102 or Figure 2 An example of a decomposed base station is depicted and described. Similarly, UE 804 may be related to Figure 1 and Figure 3 An example of a UE 104 is depicted and described. However, in other aspects, the UE 104 may be another type of wireless communication device and the BS 102 may be another type of network entity or network node, such as those described herein.

[0110] At 806, the network entity sends signaling indicating at least one of a time position or a frequency position of at least one UL subband and at least one DL subband for SBFD communication. At 808, the UE and the network entity perform SBFD communication in one or more symbols or time slots based on the signaling. For example, the UE may send a UL signal to the network entity in the UL subband indicated in the signaling. In another example, the network entity may send a DL signal to the UE in the DL subband indicated in the signaling.

[0111] According to aspects of the present disclosure, a network entity may transmit a medium access control (MAC) control element (MAC-CE) or downlink control information (DCI) conveying configurations of DL subbands, UL subbands, and guard bands to notify UEs in a cell in order to support SBFD communication in the cell. Transmitting such a MAC-CE or DCI may be an example of transmitting signaling indicating at least one of a time position or a frequency position of at least one UL subband and at least one DL subband for SBFD communication, such as in Figure 8 As shown at 806 in .

[0112] In various aspects of the present disclosure, the MAC-CE or DCI may also include an offset value indicating the time (given in symbols or time slots) to start using the included configuration of the DL subband, UL subband, and guard band when performing SBFD communication. For example, the MAC-CE or DCI may indicate that the UE should start using the included configuration K symbols or time slots after receiving the MAC-CE or DCI or K symbols after receiving an acknowledgment (ACK) of sending the MAC-CE or DCI.

[0113] In various aspects of the present disclosure, the cell may continue to use the configuration of DL subbands, UL subbands, and guard subbands in the MAC-CE or DCI for SBFD communications until the network entity sends another MAC-CE or DCI with a new configuration for DL ​​subbands, UL subbands, and guard bands or an indication that the cell is returning to half-duplex operation.

[0114] According to aspects of the present disclosure, the UE may continue to use the configuration for DL ​​subbands, UL subbands, and guard bands received in a MAC-CE or DCI for SBFD communications with a cell until the UE receives another MAC-CE or DCI with a new configuration for DL ​​subbands, UL subbands, and guard bands or an indication that the cell is returning to half-duplex operation.

[0115] In various aspects of the present disclosure, a network entity indicates a symbol and slot configuration pattern that indicates the slots for which the subband configuration is valid and the symbols within those slots. For example, in each slot in a window of M slots, the set of symbols starting at symbol i and ending at symbol j may be configured as SBFD symbols. Note that each of the M slots may have different or the same start symbol and end symbol for SBFD symbols. For some slots, the start symbol and end symbol may both be 0, meaning that there are no SBFD symbols in the slot. For some slots, all symbols in the symbols in the slot may be SBFD symbols.

[0116] Extension: A time configuration pattern can contain a single or multiple frequency configuration patterns. If multiple frequency configuration patterns are included, the time pattern can contain a total of M time slots - M1 time slots for frequency configuration pattern 1, M2 time slots for frequency configuration pattern 2,

[0117] Fig. 9 An example call flow 900 is depicted for communication between a network entity 902 and a user equipment (UE) 904 in a network. In some aspects, the network entity 902 may be related to Figure 1 and Figure 3 Describe and describe BS 102 or Figure 2 An example of a decomposed base station is depicted and described. Similarly, UE 904 may be related to Figure 1 and Figure 3 An example of a UE 104 is depicted and described. However, in other aspects, the UE 104 may be another type of wireless communication device and the BS 102 may be another type of network entity or network node, such as those described herein.

[0118] At 906, the network entity sends a MAC-CE or DCI conveying the configuration of the DL subband, UL subband, and guard band and the offset value K time slots after receiving the MAC-CE or DCI. At 908, the UE and the network entity are waiting for K time slots before starting to use the configuration of the DL subband, UL subband, and guard band for SBFD communication. At 910, the UE and the network entity start to perform SBFD communication using the configuration of the DL subband, UL subband, and guard band. For example, the UE can send a UL signal to the network entity in the UL subband indicated in the MAC-CE or DCI. In another example, the network entity can send a DL signal to the UE in the DL subband indicated in the MAC-CE or DCI.

[0119] According to various aspects of the present disclosure, a MAC-CE or DCI may convey the configuration of DL subbands and UL subbands by indicating or listing the resource blocks (RBs) used for each DL subband and each UL subband. For each DL or UL subband, the MAC-CE or DCI may include at least one of a starting RB index i and an ending RB index j or a bandwidth (in number of RBs) of the subband. A UE receiving a MAC-CE or DCI may implicitly determine the guard band RB as an RB between the configured DL subband and UL subband.

[0120] Additionally or alternatively, the MAC-CE or DCI may convey the configuration of the DL subband and the UL subband by indicating or listing the resource block (RB) set for each of the DL subband and each UL subband. For each DL or UL subband, the MAC-CE or DCI may include one or more RB set indexes for the RB set included in the subband. A UE receiving the MAC-CE or DCI may implicitly determine the guard band RB set as the RB set between the configured DL subband and the UL subband.

[0121] According to various aspects of the present disclosure, a network entity may indicate an RB or RB set to be included in a DL subband, a UL subband, or a guard band by including a resource indication vector (RIV) in a MAC-CE or DCI that configures a subband. A UE that receives a MAC-CE or DCI that configures a subband for SBFD operation may determine which RBs or RB sets to be included in a DL subband, a UL subband, or a guard band based on one or more RIVs in the MAC-CE or DCI that configures the subband.

[0122] In various aspects of the present disclosure, a MAC-CE or DCI may convey the configuration of DL subbands and UL subbands by indicating an explicit subband frequency configuration mode. The explicit subband frequency configuration mode may indicate, in frequency order, whether each subband in the subband is a downlink subband, an uplink subband, or a flexible subband. For example, when the configuration is for an uplink subband between two downlink subbands, the explicit subband frequency configuration mode may be D / U / D. The MAC-CE or DCI may also indicate the RB or RB set used for each subband in the mode, as described herein.

[0123] Fig. 10A , Fig. 10B , Fig. 10C and Fig. 10D An example subband frequency configuration pattern that does not include flexible subbands in accordance with aspects of the present disclosure is depicted. In the example subband frequency configuration pattern, "D" refers to a downlink subband, and "U" refers to an uplink subband. Fig. 10A Example D / U / D sub-band frequency patterns are depicted. Fig. 10B Example U / D / U sub-band frequency patterns are depicted. Fig. 10C Example U / D subband frequency patterns are depicted. Fig. 10D Example D / U subband frequency patterns are depicted. While each of the depicted example frequency patterns shows subbands of approximately equal size, the present disclosure is not so limited, and subbands of different sizes may be allocated within a component carrier.

[0124] Fig.11A , Fig. 11B and Fig. 11CAn example subband frequency configuration pattern including flexible subbands according to aspects of the present disclosure is depicted. In the example subband frequency configuration pattern, "D" refers to a downlink subband, "U" refers to an uplink subband, and "F" refers to a flexible subband. Fig.11A An example F / U / F subband frequency pattern is depicted. Fig. 11B An example D / F / D subband frequency pattern is depicted. Fig. 11C Example F / D subband frequency patterns are depicted. While each of the depicted example frequency patterns shows subbands of approximately equal size, the present disclosure is not so limited, and subbands of different sizes may be allocated within a component carrier.

[0125] According to various aspects of the present disclosure, a MAC-CE or DCI may convey the configuration of DL subbands and UL subbands by indicating or listing the resource blocks (RBs) used for each guard band between the DL subband and the UL subband in the configuration. For each guard band, the MAC-CE or DCI may include at least one of a starting RB index i, an ending RB index j, or a bandwidth of the guard band (in number of RBs) and an explicit indication of the direction (e.g., UL or DL) of one of the subbands. A UE receiving a MAC-CE or DCI may implicitly determine the RBs in the subband as the RBs between the configured guard bands. Starting from the subband with the direction explicitly indicated in the MAC-CE or DCI, the UE receiving the MAC-CE or DCI may also determine the direction (e.g., UL or DL) of each subband by determining the direction of each subband as the opposite direction of the next subband. For example, for Fig. 10A In the subband frequency configuration pattern depicted in FIG, a network entity may transmit a MAC-CE or DCI indicating RBs included in a guard band between a UL subband and two DL subbands and indicating that a first subband is a DL subband. A UE that has received the MAC-CE or DCI may then determine RBs included in each of the subbands as subbands not included in the guard band, wherein the first subband is a DL subband, the second subband is a UL subband, and the third subband is a DL subband.

[0126] In various aspects of the present disclosure, when a network entity sends a MAC-CE or DCI with a DL subband indication and / or a UL subband indication, the DL BWP and / or UL BWP configured by the network entity may not change.

[0127] According to aspects of the present disclosure, the network entity shall ensure that the RB or RB set for each DL or UL subband is contained within the current DL or UL active BWP. In this case, the network entity may only send a MAC-CE or DCI with a DL subband indication and a UL subband indication for the DL subband and the UL subband, respectively, which are contained with the current DL or UL active BWP.

[0128] In various aspects of the present disclosure, the network entity may configure the RB set or RB sets for each DL subband or UL subband to extend beyond the current DL or UL active BWP (e.g., into a higher or lower frequency). In this case, the network entity may send a MAC-CE or DCI with a DL subband indication and a UL subband indication for the DL subband and the UL subband without considering the current DL or UL active BWP.

[0129] In various aspects of the present disclosure, when the network entity sends a MAC-CE or DCI with a DL subband indication and a UL subband indication, the DL BWP and / or UL BWP configured by the network entity may be changed by the network entity.

[0130] According to aspects of the present disclosure, the UE may adjust the currently active DL BWP and active UL BWP (eg, change their frequency bands) to follow the corresponding indicated DL subband and UL subband without the network entity sending any additional signaling for BWP switching.

[0131] In another alternative, the network entity may be required to send additional BWP switching signals to change the DL BWP and UL BWP according to the indicated DL subband configuration and UL subband configuration sent by the network entity. The DL subband configuration and UL subband configuration may not be considered valid for the UE until the UE receives a BWP switching command to switch to a BWP configuration that matches the DL subband configuration and UL subband configuration.

[0132] Fig. 12A and Fig. 12B Depicted are example timelines 1200 and 1250 of subband configurations in accordance with aspects of the present disclosure. Fig. 12A An example timeline 1200 of a subband configuration in a network that does not change the UL BWP configuration or the DL BWP configuration when a new subband configuration for SBFD communications is activated is depicted. The bandwidth of an active UL BWP or an active DL BWP is represented at 1202. At time 1210, the subband configuration is for half-duplex operation, where the entire bandwidth of the BWP is configured for DL ​​communications. At time 1212, the subband configuration is changed to include two DL subbands and one UL subband. This subband configuration is maintained at time 1214. At time 1216, the subband configuration is for half-duplex operation, where the entire bandwidth of the BWP is configured for UL communications. Fig. 12BAn example timeline 1250 of changing the subband configuration of the UL BWP configuration or the DL BWP configuration when a new subband configuration for SBFD communication is activated in a network is depicted. At time 1260, the active DL BWP is configured with the entire BWP configured for DL ​​communication. At time 1262, a new active DL BWP and an active UL BWP are configured in the same bandwidth. At time 1264, after waiting for the BWP switching delay period, the active DL BWP and the active UL BWP configured at 1262 become active and SBFD communication can be performed. This subband configuration is maintained until time 1266. At time 1266, a new active UL BWP is configured in the same bandwidth. At time 1268, after waiting for the BWP switching delay period, the active UL BWP configured at 1266 becomes active and the subband configuration is for half-duplex operation, where the entire BWP is configured for UL communication.

[0133] In various aspects of the present disclosure, switching BWP may require a delay period between configuration of the new BWP and the UE being able to communicate via the new BWP. During this delay period, the UE's baseband hardware parameters may be re-adjusted to support the new BWP.

[0134] According to aspects of the present disclosure, a network entity may inform a UE of a time position and / or a frequency position of a subband for SBFD operation by sending signaling indicating a BWP switch (e.g., switching from a first DL BWP to a second DL BWP or switching from a first UL BWP to a second UL BWP), wherein the BWP configuration includes a configuration of a subband for SBFD operation and / or no subband to indicate a switch to half-duplex operation. Signaling of such a BWP switch may be an example of sending signaling indicating at least one of a time position or a frequency position of at least one UL subband and at least one DL subband for SBFD communication, such as in Figure 8 As shown at 806 in .

[0135] Fig.13 An example call flow 1300 is depicted for communication between a network entity 1302 and a user equipment (UE) 1304 in a network. In some aspects, the network entity 1302 may be related to Figure 1 and Figure 3 Describe and describe BS 102 or Figure 2 An example of a decomposed base station is depicted and described. Similarly, UE 1304 may be related to Figure 1 and Figure 3 An example of a UE 104 is depicted and described. However, in other aspects, the UE 104 may be another type of wireless communication device and the BS 102 may be another type of network entity or network node, such as those described herein.

[0136] At 1306, the network entity sends an indication for the UE to switch BWP (e.g., from a first DL BWP to a second DL BWP or from a first UL BWP to a second UL BWP), thereby conveying the configuration of the DL subband, UL subband, and guard band. Optionally, at 1308, the UE and the network entity both wait for a BWP switching delay period before starting to use the configuration of the DL subband, UL subband, and guard band for SBFD communication. At 1310, the UE and the network entity start to perform SBFD communication using the configuration of the DL subband, UL subband, and guard band. For example, the UE may send a UL signal to the network entity in the UL subband indicated in the switched UL BWP. In another example, the network entity may send a DL signal to the UE in the DL subband indicated in the switched DL BWP.

[0137] In various aspects of the present disclosure, a network entity may configure a UE with a semi-static UL BWP switching pattern. The semi-static UL BWP switching pattern may include one or more BWPs configured for half-duplex and SBFD modes, and a UE configured with the semi-static UL BWP switching pattern may therefore switch between half-duplex operation and SBFD operation in different time resources.

[0138] According to aspects of the present disclosure, a network entity may configure up to four UL BWPs for different half-duplex UL subband configurations and full-duplex UL subband configurations in a semi-static UL BWP switching pattern, and a UE may switch between BWP configurations based on the semi-static UL BWP switching pattern.

[0139] Fig.14A and Fig. 14B Depicted are example semi-static UL BWP switching patterns in accordance with aspects of the present disclosure. Fig.14A The example semi-static UL BWP switching mode shown in FIG. 1 switches between UL BWP1, which includes two DL subbands and one UL subband, and UL BWP2, which has no DL subband and is therefore suitable for half-duplex operation. Fig. 14B The example semi-static UL BWP switching pattern shown in FIG. 1 switches between: UL BWP1 including two DL subbands and one UL subband; UL BWP2 having no DL subband and therefore suitable for half-duplex operation; and UL BWP3 having one DL subband and one UL subband of approximately equal bandwidth.

[0140] In various aspects of the present disclosure, a network entity may configure a DL BWP comprising discontinuous RB groups or RB sets, wherein each RB group or RB set represents a DL subband for SBFD communication. In this case, the network entity may also configure a UL BWP comprising one or more other RB groups or RB sets, wherein each RB group or RB set represents a UL subband for SBFD communication.

[0141] Fig.15 Example DL BWPs (DL BWP1 and DL BWP2) according to aspects of the present disclosure are depicted. DL BWP1 includes a single RB group 1502. DL BWP2 includes two RB groups 1504 and 1506. A network entity configuring a UE with DL BWP2 may view RB group 1504 as a first DL subband for SBFD communications with the UE. The network entity may also view RB group 1506 as a second DL subband for SBFD communications with the UE. Similarly, a UE configured with DL BWP2 may view RB group 1504 as a first DL subband for SBFD communications with the network entity, and view RB group 1506 as a second DL subband for SBFD communications with the network entity.

[0142] According to aspects of the present disclosure, a network entity may configure only one wideband channel state information (CSI) reference signal (CSI-RS) resource for a set of contiguous frequency resources configured for half-duplex communication. Fig.15 When the UE is configured with the CSI-RS resource for the DL BWP2 in the non-continuous sub-band frequency resource, the UE configured with the CSI-RS resource may determine the CSI for the non-continuous sub-band frequency resource based on the CSI-RS in the non-continuous sub-band frequency resource associated with the CSI-RS resource for the continuous frequency resource. That is, the UE may measure the CSI-RS in the non-continuous sub-band frequency resource while not measuring the frequency resources that are not in the non-continuous sub-band frequency resource included in the CSI-RS resource. The UE may report the CSI metric for the BWP based on the CSI-RS measured in the non-continuous sub-band frequency resource.

[0143] In various aspects of the present disclosure, a network entity may configure only one wideband channel state information (CSI) reference signal (CSI-RS) resource for a set of contiguous frequency resources configured for half-duplex communication. Fig.15When the UE is configured with the CSI-RS resource for continuous frequency resources in the DL subband, the UE may determine the CSI for each DL subband in the DL subband based on the CSI-RS associated with the CSI-RS resource for continuous frequency resources in the DL subband. That is, the UE may measure the CSI-RS in each DL subband in the DL subband without measuring the frequency resources not in the DL subband included in the CSI-RS resource. The UE may report the CSI metric for each DL subband in the DL subband based on the measured CSI-RS in each DL subband in the DL subband.

[0144] Fig.16 Frequency resources of an example BWP according to aspects of the present disclosure are depicted. DL BWP1 includes a single RB group 1602. Wideband CSI-RS resources are configured for the UE across the frequencies of RB group 1602. DL BWP2 includes two RB groups 1604 and 1606. When a UE is configured with DL BWP2 and is requested to report CSI based on CSI-RS resources, the UE may measure CSI-RS associated with CSI-RS resources within RB groups 1604 and 1606 without measuring CSI-RS associated with CSI-RS resources within RB group 1610. The UE may report CSI metrics for DL ​​BWP2 or separate CSI metrics for DL ​​subbands on frequency resources in RB group 1604 and for DL ​​subbands on frequency resources in RB group 1606.

[0145] According to various aspects of the present disclosure, a network entity may configure a channel state information (CSI) reference signal (CSI-RS) resource for a DL BWP. In a communication system in which a subband may be configured for a UE without adapting the BWP configuration to match the subband, as described herein, when one or more DL subbands are configured that do not include all frequency resources in the frequency resources for a DL BWP for a SBFD symbol or slot, the UE configured with the CSI-RS resource may determine the CSI for each DL subband in the DL subband based on the CSI-RS associated with the CSI-RS resource for the DL BWP in the DL subband. That is, the UE may measure the CSI-RS in each DL subband in the DL subband without measuring the frequency resources that are not in the DL subband and are included in the CSI-RS resource. The UE may report the CSI metric for each DL subband in the DL subband based on the measured CSI-RS in each DL subband in the DL subband.

[0146] Fig.17Depicted are frequency resources of example subbands in an example DL BWP according to aspects of the present disclosure. DL BWP1 includes a single RB group 1702. CSI-RS resources are configured for the UE across the frequencies of DL BWP1. Later, the UE is configured with a first DL subband including RB group 1704 and a second DL subband including RB group 1706. When the UE is requested to report CSI based on the CSI-RS resources, the UE may measure the CSI-RS associated with the CSI-RS resources within RB group 1704 to calculate the CSI for the first DL subband without measuring the CSI-RS associated with the CSI-RS resources within RB group 1710. Similarly, the UE may measure the CSI-RS associated with the CSI-RS resources within RB group 1706 to calculate the CSI for the second DL subband without measuring the CSI-RS associated with the CSI-RS resources within RB group 1710. The UE may report CSI metrics for each of the first DL subband and the second DL subband.

[0147] In various aspects of the present disclosure, a network entity may configure a sounding reference signal (SRS) resource for a UL BWP. In a communication system in which a subband may be configured for a UE without adapting the BWP configuration to match the subband, as described herein, when one or more UL subbands are configured that do not include all frequency resources in the frequency resources for a UL BWP for a SBFD symbol or slot, the UE configured with the SRS resource may transmit an SRS for each DL subband in the UL subband based on an SRS associated with an RS resource for the UL BWP in the UL subband. That is, the UE may transmit an SRS in each UL subband in the UL subband without transmitting an SRS in a frequency resource that is not in a DL subband and is included in the SRS resource.

[0148] Fig.18Frequency resources of example subbands in an example UL BWP according to aspects of the present disclosure are depicted. UL BWP1 includes a single RB group 1802. SRS resources are configured for the UE across the frequencies of UL BWP1. Later, the UE is configured with a first UL subband including RB group 1804, a first DL subband including RB group 1810, and a second DL subband including RB group 1812. When the UE is requested to send an SRS based on the SRS resources, the UE may send an SRS associated with the SRS resources within RB group 1804 without sending an SRS associated with the SRS resources within RB group 1810. Similarly, the UE may send an SRS associated with the SRS resources within RB group 1804 without sending an SRS associated with the SRS resources within RB group 1812. The network entity may measure the SRS associated with the SRS resources within RB group 1804 without measuring the SRS associated with the SRS resources within RB groups 1810 and 1812.

[0149] Example Operation of User Equipment

[0150] Fig.19 The method for use by a UE such as Figure 1 and Figure 3 An example of method 1900 for performing wireless communications with a UE 104).

[0151] Method 1900 begins at step 1905, where signaling is received indicating at least one of a time position or a frequency position of at least one UL subband and at least one DL subband for SBFD communication. In some cases, the operation of this step refers to the operation of Fig.21 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0152] Method 1900 then proceeds to step 1910, where SBFD communication is performed in one or more symbols or time slots based on the signaling. In some cases, the operation of this step refers to the operation described in reference to Fig.21 The described circuits for performing and / or code for performing may be or may be performed by the circuits and / or the code.

[0153] In some aspects, the signaling comprises at least one of a MAC-CE or a DCI.

[0154] In some aspects, the signaling indicates: a starting RB index for each DL subband in at least one DL subband; an ending RB index or at least one of an allocated bandwidth for each DL subband in at least one DL subband; a starting RB index for each UL subband in at least one UL subband; and at least one of an ending RB index or an allocated bandwidth for each UL subband in at least one UL subband.

[0155] In some aspects, the signaling also indicates an offset value that indicates a start time when the signaling becomes valid.

[0156] In some aspects, the signaling further indicates a symbol and time slot configuration pattern comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0157] In some aspects, the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when a first UL subband among the multiple UL subbands and a first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when a second UL subband among the multiple UL subbands and a second DL subband among the multiple DL subbands are configured.

[0158] In some aspects, the signaling includes: one or more indices of a set of RBs included in each of the at least one DL subband; and one or more indices of a set of RBs included in each of the at least one UL subband.

[0159] In some aspects, the signaling also indicates an offset value that indicates a start time when the signaling becomes valid.

[0160] In some aspects, the signaling further indicates a symbol and time slot configuration pattern comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0161] In some aspects, the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when a first UL subband among the multiple UL subbands and a first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when a second UL subband among the multiple UL subbands and a second DL subband among the multiple DL subbands are configured.

[0162] In some aspects, the signaling indicates: an explicit subband frequency configuration pattern indicating a relationship between a frequency position of at least one DL subband and a frequency position of at least one UL subband; a starting RB index of a GB having a frequency between the frequency position of at least one DL subband and the frequency position of at least one UL subband; and at least one of an ending RB index of the GB or an allocated bandwidth.

[0163] In some aspects, the signaling also indicates: a frequency position of an additional DL subband in at least one DL subband, wherein the explicit subband frequency configuration mode also indicates a relationship between the frequency position of the additional DL subband and the frequency position of at least one UL subband; a starting RB index of an additional GB having a frequency between the frequency position of the additional DL subband and the frequency position of at least one UL subband; and at least one of an ending RB index or an allocated bandwidth of the additional GB.

[0164] In some aspects, the signaling also indicates an offset value that indicates a start time when the configuration becomes valid.

[0165] In some aspects, the signaling further indicates a symbol and time slot configuration pattern comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0166] In some aspects, the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when a first UL subband among the multiple UL subbands and a first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when a second UL subband among the multiple UL subbands and a second DL subband among the multiple DL subbands are configured.

[0167] In some aspects, the signaling also indicates: a frequency position of an additional UL subband in at least one UL subband, wherein the explicit subband frequency configuration mode also indicates a relationship between the frequency position of the additional UL subband and the frequency position of at least one DL subband; a starting RB index of an additional GB having a frequency between the frequency position of the additional UL subband and the frequency position of at least one DL subband; and at least one of an ending RB index or an allocated bandwidth of the additional GB.

[0168] In some aspects, the signaling also indicates an offset value that indicates a start time when the signaling becomes valid.

[0169] In some aspects, the signaling further indicates a symbol and time slot configuration pattern comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0170] In some aspects, the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when a first UL subband among the multiple UL subbands and a first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when a second UL subband among the multiple UL subbands and a second DL subband among the multiple DL subbands are configured.

[0171] In some aspects, the signaling also indicates: a starting RB index of a first edge GB, wherein the starting RB includes a first edge frequency of the CC; at least one of an ending RB index or a bandwidth of the first edge GB; a starting RB index of a second edge GB having a frequency higher than a frequency of at least one DL subband and a frequency of at least one UL subband; and at least one of an ending RB index or a bandwidth of a second edge GB, wherein the ending RB or the bandwidth of the second edge GB includes a second edge frequency of the CC.

[0172] In some aspects, the signaling indicates: a starting RB index of a GB having a frequency between a frequency position of at least one DL subband and a frequency position of at least one UL subband; at least one of an ending RB index or an allocated bandwidth of the GB; and at least one of an ending RB index or an allocated bandwidth and a starting RB index of the GB of at least one or more DL subbands or at least one UL subband.

[0173] In some aspects, the signaling also indicates an offset value that indicates a start time when the signaling becomes valid.

[0174] In some aspects, the signaling further indicates a symbol and time slot configuration pattern comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0175] In some aspects, the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when a first UL subband among the multiple UL subbands and a first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when a second UL subband among the multiple UL subbands and a second DL subband among the multiple DL subbands are configured.

[0176] In some aspects, the method 1900 further includes determining not to adapt the active ULBWP or the active DL BWP in response to the signaling based on a predefined rule. In some cases, the operation of this step refers to the Fig.21 The described circuit for determining and / or code for determining may be or may be performed by the circuit and / or the code.

[0177] In some aspects, the method 1900 further includes adapting at least one of the active UL bandwidth portion or the active DL bandwidth portion in response to the signaling. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuit for adapting and / or code for adapting may be or may be executed by the circuit and / or the code.

[0178] In some aspects, the method 1900 further includes receiving a BWP switching signal, wherein performing SBFD communication includes waiting in one or more symbols or time slots based on the signaling until the BWP switching signal is received before performing SBFD communication. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0179] In some aspects, the signaling indicates a BWP switch to a first BWP; and the frequency location of the at least one uplink subband or the frequency location of the at least one downlink subband is indicated in a BWP configuration for the first BWP.

[0180] In some aspects, the first BWP includes a first UL BWP indicating a frequency location of at least one UL subband. In some aspects, the method 1900 further includes: receiving a configuration of a semi-static UL BWP switching pattern indicating a BWP configuration for the first UL BWP and a BWP configuration for at least one second UL BWP; and switching from the at least one second UL BWP to the first UL BWP in response to the signaling and based on the semi-static UL BWP switching pattern. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0181] In some aspects, the signaling indicates a first DL BWP configuration comprising at least one DL subband and another DL subband, wherein the at least one DL subband and the another DL subband are in non-contiguous frequency bands.

[0182] In some aspects, the method 1900 further includes receiving a configuration of a CSI-RS to be transmitted via a bandwidth of the CC, wherein the CSI-RS has a CSI-RS resource identifier. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0183] In some aspects, the method 1900 further includes receiving a command for reporting channel state information for at least one DL subband and another DL subband associated with the CSI-RS resource identifier. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0184] In some aspects, the method 1900 further comprises reporting the CSI metric in a CSI report for the at least one DL subband and the other DL subband based on the CSI-RS in the at least one DL subband and the other DL subband corresponding to the CSI-RS associated with the CSI-RS resource identifier in the CC. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuit for reporting and / or code for reporting may be or may be executed by the circuit and / or the code.

[0185] In some aspects, method 1900 further includes measuring a CSI-RS associated with a CSI-RS resource identifier within at least one DL subband and another DL subband, wherein the CSI metric is calculated based on the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and another DL subband and not based on the CSI-RS associated with the CSI-RS resource identifier outside the at least one DL subband and another DL subband. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuit for measuring and / or code for measuring may be or may be executed by the circuit and / or the code.

[0186] In some aspects, the UE determines the CSI-RS to measure based on the first DL BWP configuration.

[0187] In some aspects, the signaling indicates a frequency location of the at least one DL subband and the other DL subband, wherein the at least one DL subband and the other DL subband are in non-contiguous frequency bands.

[0188] In some aspects, the method 1900 further includes receiving a DL BWP configuration including a configuration of a CSI-RS, wherein a frequency location of the DL BWP includes a frequency location of at least one DL subband and another DL subband, wherein the CSI-RS has a CSI-RS resource identifier (CRI). In some cases, the operation of this step refers to as described in reference Fig.21 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0189] In some aspects, the method 1900 further includes receiving a command for reporting channel state information associated with the CSI-RS resource identifier. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0190] In some aspects, the method 1900 further comprises reporting the CSI metric in a CSI report for the at least one DL subband and the other DL subband based on the CSI-RS corresponding to the CSI-RS associated with the CSI-RS resource identifier in the at least one DL subband and the other DL subband. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuit for reporting and / or code for reporting may be or may be executed by the circuit and / or the code.

[0191] In some aspects, method 1900 further includes measuring a CSI-RS associated with a CSI-RS resource identifier within at least one DL subband and another DL subband, wherein the CSI metric is calculated based on the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and another DL subband and not based on the CSI-RS associated with the CSI-RS resource identifier outside the at least one DL subband and another DL subband. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuit for measuring and / or code for measuring may be or may be executed by the circuit and / or the code.

[0192] In some aspects, the method 1900 further includes receiving a configuration of a UL BWP, the configuration including a configuration of an SRS to be sent by the UE via a bandwidth of the UL BWP, wherein a frequency location of the UL BWP includes a frequency location of at least one DL subband. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0193] In some aspects, the method 1900 further includes: receiving a command for sending the SRS. In some cases, the operation of this step refers to the operation of Fig.21 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0194] In some aspects, the method 1900 further includes: transmitting the SRS in at least one UL subband based on the configuration of the UL BWP, and not transmitting the SRS at a frequency position of the BWP that is not included in the UL subband. In some cases, the operation of this step refers to as described in reference Fig.21 The described circuits for transmitting and / or codes for transmitting, or may be executed by the circuits and / or the codes.

[0195] In one aspect, method 1900 or any aspect related thereto may be performed by an apparatus such as Fig.21 The method 1900 is performed by a communication device 2100 that includes various components operable, configured, or adapted to perform the method 1900. The communication device 2100 is described in more detail below.

[0196] Please note that Fig.19 This is merely one example of a method, and other methods including fewer, additional, or alternative steps may also be consistent with the present disclosure.

[0197] Example Operations of Network Entities

[0198] Fig. 20 A method for transmitting data to a network entity such as Figure 1 and Figure 3 BS 102 or such Figure 2 An example of a method 2000 for performing wireless communications using a decomposed base station) as discussed.

[0199] Method 2000 begins at step 2005, where signaling is sent indicating at least one of a time position or a frequency position of at least one UL subband and at least one DL subband for SBFD communication. In some cases, the operation of this step refers to the operation of Fig. 22 The described circuits for transmitting and / or codes for transmitting may be or may be performed by the circuits and / or the codes.

[0200] Method 2000 then proceeds to step 2010, where SBFD communication is performed in one or more symbols or time slots based on the signaling. In some cases, the operation of this step refers to the operation described in reference to Fig. 22 The described circuits for performing and / or code for performing may be or may be performed by the circuits and / or the code.

[0201] In some aspects, the signaling comprises at least one of a MAC-CE or a DCI.

[0202] In some aspects, the signaling indicates: a starting RB index for each DL subband in at least one DL subband; an ending RB index or at least one of an allocated bandwidth for each DL subband in at least one DL subband; a starting RB index for each UL subband in at least one UL subband; and at least one of an ending RB index or an allocated bandwidth for each UL subband in at least one UL subband.

[0203] In some aspects, the signaling also indicates an offset value that indicates a start time when the signaling becomes valid.

[0204] In some aspects, the signaling further indicates a symbol and time slot configuration pattern comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0205] In some aspects, the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when a first UL subband among the multiple UL subbands and a first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when a second UL subband among the multiple UL subbands and a second DL subband among the multiple DL subbands are configured.

[0206] In some aspects, the signaling includes: one or more indices of a set of RBs included in each of the at least one DL subband; and one or more indices of a set of RBs included in each of the at least one UL subband.

[0207] In some aspects, the signaling also indicates an offset value that indicates a start time when the signaling becomes valid.

[0208] In some aspects, the signaling further indicates a symbol and time slot configuration pattern comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0209] In some aspects, the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when a first UL subband among the multiple UL subbands and a first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when a second UL subband among the multiple UL subbands and a second DL subband among the multiple DL subbands are configured.

[0210] In some aspects, the signaling indicates: an explicit subband frequency configuration pattern indicating a relationship between a frequency position of at least one DL subband and a frequency position of at least one UL subband; a starting RB index of a GB having a frequency between the frequency position of at least one DL subband and the frequency position of at least one UL subband; and at least one of an ending RB index of the GB or an allocated bandwidth.

[0211] In some aspects, the signaling also indicates: a frequency position of an additional DL subband in at least one DL subband, wherein the explicit subband frequency configuration mode further indicates a relationship between the frequency position of the additional DL subband and the frequency position of at least one UL subband; a starting RB index of an additional GB having a frequency between the frequency position of the additional DL subband and the frequency position of at least one UL subband; and at least one of an ending RB index of the additional GB or an allocated bandwidth.

[0212] In some aspects, the signaling also indicates an offset value that indicates a start time when the configuration becomes valid.

[0213] In some aspects, the signaling further indicates a symbol and time slot configuration pattern comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0214] In some aspects, the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when a first UL subband among the multiple UL subbands and a first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when a second UL subband among the multiple UL subbands and a second DL subband among the multiple DL subbands are configured.

[0215] In some aspects, the signaling also indicates: a frequency position of an additional UL subband in at least one UL subband, wherein the explicit subband frequency configuration mode also indicates a relationship between the frequency position of the additional UL subband and the frequency position of at least one DL subband; a starting RB index of an additional GB having a frequency between the frequency position of the additional UL subband and the frequency position of at least one DL subband; and at least one of an ending RB index or an allocated bandwidth of the additional GB.

[0216] In some aspects, the signaling also indicates an offset value that indicates a start time when the signaling becomes valid.

[0217] In some aspects, the signaling further indicates a symbol and time slot configuration pattern comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0218] In some aspects, the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when a first UL subband among the multiple UL subbands and a first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when a second UL subband among the multiple UL subbands and a second DL subband among the multiple DL subbands are configured.

[0219] In some aspects, the signaling also indicates: a starting RB index of a first edge GB, wherein the starting RB includes a first edge frequency of the CC; at least one of an ending RB index or a bandwidth of the first edge GB; a starting RB index of a second edge GB having a frequency higher than a frequency of at least one DL subband and a frequency of at least one UL subband; and at least one of an ending RB index or a bandwidth of a second edge GB, wherein the ending RB or the bandwidth of the second edge GB includes a second edge frequency of the CC.

[0220] In some aspects, the signaling indicates: a starting RB index of a GB having a frequency between a frequency location of at least one DL subband and a frequency location of at least one UL subband; at least one of an ending RB index or an allocated bandwidth of the GB; and a direction of at least one DL subband or at least one UL subband.

[0221] In some aspects, the signaling also indicates an offset value that indicates a start time when the signaling becomes valid.

[0222] In some aspects, the signaling further indicates a symbol and time slot configuration pattern comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0223] In some aspects, the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when a first UL subband among the multiple UL subbands and a first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when a second UL subband among the multiple UL subbands and a second DL subband among the multiple DL subbands are configured.

[0224] In some aspects, the method 2000 further includes determining not to adapt the active ULBWP or the active DL BWP in response to the signaling based on a predefined rule. In some cases, the operation of this step refers to the operation described in reference to Fig. 22 The described circuit for determining and / or code for determining may be or may be performed by the circuit and / or the code.

[0225] In some aspects, the method 2000 further includes adapting at least one of the active UL bandwidth portion or the active DL bandwidth portion in response to the signaling. In some cases, the operation of this step refers to as described in reference Fig. 22 The described circuit for adapting and / or code for adapting may be or may be executed by the circuit and / or the code.

[0226] In some aspects, the method 2000 further includes sending a BWP switching signal, wherein performing SBFD communication includes waiting in one or more symbols or time slots based on the signaling before performing SBFD communication until the BWP switching signal is sent. In some cases, the operation of this step refers to as described in reference Fig. 22 The described circuits for transmitting and / or codes for transmitting may be or may be performed by the circuits and / or the codes.

[0227] In some aspects, the signaling indicates a BWP switch to a first BWP; and the frequency location of the at least one uplink subband or the frequency location of the at least one downlink subband is indicated in a BWP configuration for the first BWP.

[0228] In some aspects, the first BWP includes a first UL BWP indicating a frequency location of at least one UL subband. In some aspects, the method 2000 further includes: sending a configuration of a semi-static UL BWP switching pattern indicating a BWP configuration for the first UL BWP and a BWP configuration for at least one second UL BWP, wherein the signaling indicates switching based on the semi-static UL BWP switching pattern. In some cases, the operation of this step refers to as described in reference Fig. 22 The described circuits for transmitting and / or codes for transmitting may be or may be performed by the circuits and / or the codes.

[0229] In some aspects, the signaling indicates a first DL BWP configuration comprising at least one DL subband and another DL subband, wherein the at least one DL subband and the another DL subband are in non-contiguous frequency bands.

[0230] In some aspects, the method 2000 further includes sending a configuration of a CSI-RS transmitted via a bandwidth of the CC, wherein the CSI-RS has a CSI-RS resource identifier. In some cases, the operation of this step refers to as described in reference Fig. 22 The described circuits for transmitting and / or codes for transmitting may be or may be performed by the circuits and / or the codes.

[0231] In some aspects, the method 2000 further includes sending a command for reporting channel state information for at least one DL subband and another DL subband associated with the CSI-RS resource identifier. In some cases, the operation of this step refers to as described in reference Fig. 22 The described circuits for transmitting and / or codes for transmitting may be or may be performed by the circuits and / or the codes.

[0232] In some aspects, the method 2000 further includes receiving CSI metrics in a CSI report for at least one DL subband and another DL subband based on CSI-RS in the at least one DL subband and another DL subband corresponding to a CSI-RS associated with a CSI-RS resource identifier in the CC. In some cases, the operation of this step refers to as described in reference Fig. 22 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0233] In some aspects, the CSI metric is calculated based on the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the other DL subband but not based on the CSI-RS associated with the CSI-RS resource identifier outside the at least one DL subband and the other DL subband.

[0234] In some aspects, the signaling indicates a frequency location of the at least one DL subband and the other DL subband, wherein the at least one DL subband and the other DL subband are in non-contiguous frequency bands.

[0235] In some aspects, the method 2000 further comprises transmitting a DL BWP configuration comprising a configuration of a CSI-RS, wherein the frequency location of the DL BWP comprises a frequency location of at least one DL subband and another DL subband, wherein the CSI-RS has a CSI-RS resource identifier. In some cases, the operation of this step refers to as described in reference Fig. 22 The described circuits for transmitting and / or codes for transmitting may be or may be performed by the circuits and / or the codes.

[0236] In some aspects, the method 2000 further includes sending a command for reporting channel state information associated with the CSI-RS resource identifier. In some cases, the operation of this step refers to as described in reference Fig. 22 The described circuits for transmitting and / or codes for transmitting may be or may be performed by the circuits and / or the codes.

[0237] In some aspects, the method 2000 further includes receiving CSI metrics in a CSI report for the at least one DL subband and the other DL subband based on the CSI-RS corresponding to the CSI-RS associated with the CSI-RS resource identifier in the at least one DL subband and the other DL subband. In some cases, the operation of this step refers to as described in reference Fig. 22 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0238] In some aspects, the CSI metric is calculated based on the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the other DL subband but not based on the CSI-RS associated with the CSI-RS resource identifier outside the at least one DL subband and the other DL subband.

[0239] In some aspects, the method 2000 further comprises sending a configuration of a UL BWP, the configuration comprising a configuration of an SRS to be sent via a bandwidth of the UL BWP, wherein a frequency location of the UL BWP comprises a frequency location of at least one DL subband. In some cases, the operation of this step refers to as described in reference Fig. 22 The described circuits for transmitting and / or codes for transmitting may be or may be performed by the circuits and / or the codes.

[0240] In some aspects, the method 2000 further includes: sending a command for sending the SRS. In some cases, the operation of this step refers to the operation of Fig. 22The described circuits for transmitting and / or codes for transmitting may be or may be performed by the circuits and / or the codes.

[0241] In some aspects, the method 2000 further includes: receiving the SRS in the UL subband based on the configuration of the UL subband configuration, and not receiving the SRS at a frequency position of the BWP that is not included in the UL subband. In some cases, the operation of this step refers to as described in reference Fig. 22 The described circuits for receiving and / or codes for receiving may be or may be performed by the circuits and / or the codes.

[0242] In one aspect, method 2000 or any aspect related thereto may be performed by an apparatus such as Fig. 22 The method 2000 is performed by a communication device 2200 that includes various components operable, configured, or adapted to perform the method 2000. The communication device 2200 is described in more detail below.

[0243] Please note that Fig. 20 This is merely one example of a method, and other methods including fewer, additional, or alternative steps are also possible consistent with the present disclosure.

[0244] Example Communication Device

[0245] Fig.21 Various aspects of an example communications device 2100 are depicted. In some aspects, the communications device 2100 is a user equipment (UE), such as described above with respect to Figure 1 and Figure 3 UE 104 is described.

[0246] The communication device 2100 includes a processing system 2105 coupled to a transceiver 2186 (e.g., a transmitter and / or a receiver). The transceiver 2186 is configured to transmit and receive signals for the communication device 2100, such as various signals as described herein, via an antenna 2188. The processing system 2105 may be configured to perform processing functions for the communication device 2100, including processing signals received and / or to be transmitted by the communication device 2100.

[0247] The processing system 2105 includes one or more processors 2110. In various aspects, such as with respect to Figure 3As described, the one or more processors 2110 may represent one or more of the receive processor 358, the transmit processor 364, the TX MIMO processor 366, and / or the controller / processor 380. The one or more processors 2110 are coupled to the computer-readable medium / memory 2150 via the bus 2184. In some aspects, the computer-readable medium / memory 2150 is configured to store instructions (e.g., computer-executable code) that, when executed by the one or more processors 2110, cause the one or more processors 2110 to perform operations related to the processing of the computer-readable medium / memory 2150. Fig.19 The method 1900 described herein or any aspect related thereto. Note that references to a processor performing a function of the communication device 2100 may include one or more processors 2110 performing that function of the communication device 2100 .

[0248] In the depicted example, computer readable medium / memory 2150 stores code (e.g., executable instructions) such as code for receiving 2155, code for executing 2160, code for determining 2165, code for adapting 2170, code for reporting 2175, code for measuring 2180, and code for transmitting 2182. The processing of code for receiving 2155, code for executing 2160, code for determining 2165, code for adapting 2170, code for reporting 2175, code for measuring 2180, and code for transmitting 2182 may enable the communication device 2100 to perform operations related to the communication device 2100. Fig.19 The method 1900 described herein or any aspect related thereto.

[0249] The one or more processors 2110 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 2150, including circuits such as circuits for receiving 2115, circuits for executing 2120, circuits for determining 2125, circuits for adapting 2130, circuits for reporting 2135, circuits for measuring 2140, and circuits for transmitting 2145. Processing using the circuits for receiving 2115, the circuits for executing 2120, the circuits for determining 2125, the circuits for adapting 2130, the circuits for reporting 2135, the circuits for measuring 2140, and the circuits for transmitting 2145 may enable the communication device 2100 to perform operations related to the communication. Fig.19 The method 1900 described herein or any aspect related thereto.

[0250] The various components of the communication device 2100 may provide for performing Fig.19 The components of the method 1900 described herein or any aspect thereof. For example, the components for sending, transmitting, or outputting for sending may include Figure 3The transceiver 354 and / or antenna 352 of the UE 104 illustrated in FIG. Fig.21 The transceiver 2186 and antenna 2188 of the communication device 2100 in FIG. 1 may include Figure 3 The transceiver 354 and / or antenna 352 of the UE 104 illustrated in FIG. Fig.21 The transceiver 2186 and antenna 2188 of the communication device 2100.

[0251] Fig. 22 Various aspects of an example communications device 2200 are depicted. In some aspects, the communications device 2200 is a network entity such as Figure 1 and Figure 3 BS 102 or such Figure 2 The disaggregated base station discussed.

[0252] The communication device 2200 includes a processing system 2205 coupled to a transceiver 2275 (e.g., a transmitter and / or a receiver) and / or a network interface 2285. The transceiver 2275 is configured to transmit and receive signals for the communication device 2200 via an antenna 2280, such as various signals as described herein. The network interface 2285 is configured to transmit and receive signals for the communication device 2200 via a communication link (such as various signals as described herein). Figure 2 The processing system 2205 may be configured to obtain and transmit signals for the communication device 2200 using the backhaul link, midhaul link, and / or fronthaul link described herein. The processing system 2205 may be configured to perform processing functions for the communication device 2200, including processing signals received by the communication device 2200 and / or to be transmitted by the communication device.

[0253] The processing system 2205 includes one or more processors 2210. In various aspects, such as with respect to Figure 3 As described, the one or more processors 2210 may represent one or more of the receive processor 338, the transmit processor 320, the TX MIMO processor 330, and / or the controller / processor 340. The one or more processors 2210 are coupled to the computer-readable medium / memory 2240 via the bus 2270. In certain aspects, the computer-readable medium / memory 2240 is configured to store instructions (e.g., computer-executable code) that, when executed by the one or more processors 2210, cause the one or more processors 2210 to perform operations related to the processing of the computer-readable medium / memory 2240. Fig. 20 The method 2000 described herein or any aspect related thereto. Note that references to a processor of the communication device 2200 that performs a function may include one or more processors 2210 of the communication device 2200 that perform the function.

[0254] In the depicted example, computer readable medium / memory 2240 stores code (e.g., executable instructions) such as code for transmitting 2245, code for executing 2250, code for determining 2255, code for adapting 2260, and code for receiving 2265. Processing of code for transmitting 2245, code for executing 2250, code for determining 2255, code for adapting 2260, and code for receiving 2265 may enable communication device 2200 to perform operations related to Fig. 20 Method 2000 described herein or any aspect related thereto.

[0255] The one or more processors 2210 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 2240, including circuits such as circuits for transmitting 2215, circuits for executing 2220, circuits for determining 2225, circuits for adapting 2230, and circuits for receiving 2235. Processing using the circuits for transmitting 2215, the circuits for executing 2220, the circuits for determining 2225, the circuits for adapting 2230, and the circuits for receiving 2235 may enable the communication device 2200 to perform as described with respect to Fig. 20 The described method 2000 or any aspect related thereto.

[0256] The various components of the communication device 2200 may provide for performing the following operations: Fig. 20 The components of the described method 2000 or any aspect thereof. The components for sending, transmitting or outputting for sending may include Figure 3 The transceiver 332 and / or antenna 334 of the BS 102 illustrated in FIG. Fig. 22 The transceiver 2275 and antenna 2280 of the communication device 2200 in FIG. 1 may include Figure 3 The transceiver 332 and / or antenna 334 of the BS 102 illustrated in FIG. Fig. 22 The transceiver 2275 and antenna 2280 of the communication device 2200.

[0257] Sample Clauses

[0258] Specific implementation examples are described in the following numbered clauses:

[0259] Clause 1: A method for wireless communications by a UE, comprising: receiving signaling indicating at least one of a time location or a frequency location of at least one UL subband and at least one DL subband for SBFD communications; and performing SBFD communications in one or more symbols or time slots based on the signaling.

[0260] Clause 2: The method of clause 1, wherein the signaling comprises at least one of a MAC-CE or a DCI.

[0261] Clause 3: A method according to any one of clauses 1 and 2, wherein the signaling indicates: a starting RB index for each DL subband in the at least one DL subband; an ending RB index or at least one of an allocated bandwidth for each DL subband in the at least one DL subband; a starting RB index for each UL subband in the at least one UL subband; and at least one of an ending RB index or an allocated bandwidth for each UL subband in the at least one UL subband.

[0262] Clause 4: The method of clause 3, wherein the signaling further indicates an offset value, the offset value indicating a start time when the signaling becomes valid.

[0263] Clause 5: A method according to clause 3, wherein the signaling also indicates a symbol and time slot configuration mode, the symbol and time slot configuration mode comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0264] Clause 6: A method according to Clause 5, wherein the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when the first UL subband among the multiple UL subbands and the first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when the second UL subband among the multiple UL subbands and the second DL subband among the multiple DL subbands are configured.

[0265] Clause 7: A method according to any one of clauses 1 to 6, wherein the signaling comprises: one or more indices of RB sets included in each DL subband in the at least one DL subband; and one or more indices of RB sets included in each UL subband in the at least one UL subband.

[0266] Clause 8: The method of clause 7, wherein the signaling further indicates an offset value, the offset value indicating a start time when the signaling becomes valid.

[0267] Clause 9: A method according to clause 7, wherein the signaling also indicates a symbol and time slot configuration mode, the symbol and time slot configuration mode comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0268] Clause 10: A method according to clause 9, wherein the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when the first UL subband among the multiple UL subbands and the first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when the second UL subband among the multiple UL subbands and the second DL subband among the multiple DL subbands are configured.

[0269] Clause 11: A method according to any one of clauses 1 to 10, wherein the signaling indicates: an explicit subband frequency configuration mode indicating the relationship between the frequency position of the at least one DL subband and the frequency position of the at least one UL subband; a starting RB index of a GB having a frequency between the frequency position of the at least one DL subband and the frequency position of the at least one UL subband; and at least one of an ending RB index or an allocated bandwidth of the GB.

[0270] Clause 12: A method according to clause 11, wherein the signaling also indicates: the frequency position of an additional DL subband in the at least one DL subband, wherein the explicit subband frequency configuration mode also indicates the relationship between the frequency position of the additional DL subband and the frequency position of the at least one UL subband; the starting RB index of an additional GB having a frequency between the frequency position of the additional DL subband and the frequency position of the at least one UL subband; and at least one of the ending RB index or the allocated bandwidth of the additional GB.

[0271] Clause 13: The method of clause 12, wherein the signaling further indicates an offset value, the offset value indicating a start time when the configuration becomes valid.

[0272] Clause 14: A method according to clause 12, wherein the signaling also indicates a symbol and time slot configuration mode, the symbol and time slot configuration mode comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0273] Clause 15: A method according to clause 14, wherein the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when the first UL subband among the multiple UL subbands and the first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when the second UL subband among the multiple UL subbands and the second DL subband among the multiple DL subbands are configured.

[0274] Clause 16: A method according to clause 11, wherein the signaling also indicates: the frequency position of an additional UL subband in the at least one UL subband, wherein the explicit subband frequency configuration mode also indicates the relationship between the frequency position of the additional UL subband and the frequency position of the at least one DL subband; the starting RB index of an additional GB having a frequency between the frequency position of the additional UL subband and the frequency position of the at least one DL subband; and at least one of the ending RB index or the allocated bandwidth of the additional GB.

[0275] Clause 17: The method of clause 16, wherein the signaling further indicates an offset value, the offset value indicating a start time when the signaling becomes valid.

[0276] Clause 18: A method according to clause 16, wherein the signaling also indicates a symbol and time slot configuration mode, the symbol and time slot configuration mode comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0277] Clause 19: A method according to clause 18, wherein the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when the first UL subband among the multiple UL subbands and the first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when the second UL subband among the multiple UL subbands and the second DL subband among the multiple DL subbands are configured.

[0278] Clause 20: A method according to clause 11, wherein the signaling also indicates: a starting RB index of a first edge GB, wherein the starting RB includes a first edge frequency of a component carrier (CC) including the at least one DL subband and the at least one UL subband; at least one of an ending RB index or a bandwidth of the first edge GB; a starting RB index of a second edge GB having a frequency higher than the frequency of the at least one DL subband and the frequency of the at least one UL subband; and at least one of an ending RB index or a bandwidth of a second edge GB, wherein the ending RB or bandwidth of the second edge GB includes the second edge frequency of the CC.

[0279] Clause 21: A method according to any one of clauses 1 to 20, wherein the signaling indicates: a starting RB index of a GB having a frequency between the frequency position of the at least one DL subband and the frequency position of the at least one UL subband; at least one of an ending RB index or an allocated bandwidth of the GB; and at least one of an ending RB index or an allocated bandwidth and a starting RB index of the GB of at least one or more DL subbands or the at least one UL subband.

[0280] Clause 22: The method of clause 21, wherein the signaling further indicates an offset value, the offset value indicating a start time when the signaling becomes valid.

[0281] Clause 23: A method according to clause 21, wherein the signaling also indicates a symbol and time slot configuration mode, the symbol and time slot configuration mode comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0282] Clause 24: A method according to clause 23, wherein the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when the first UL subband among the multiple UL subbands and the first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when the second UL subband among the multiple UL subbands and the second DL subband among the multiple DL subbands are configured.

[0283] Clause 25: A method as described in any of clauses 1 to 24, further comprising: determining not to adapt the active UL BWP or the active DL BWP in response to the signaling based on a predefined rule.

[0284] Clause 26: A method as described in any of clauses 1 to 25, further comprising adapting at least one of an active UL bandwidth portion or an active DL bandwidth portion in response to the signaling.

[0285] Clause 27: The method of any of clauses 1 to 26, further comprising: receiving a BWP switching signal, wherein performing the SBFD communication comprises waiting in one or more symbols or time slots based on the signaling until the BWP switching signal is received before performing the SBFD communication.

[0286] Clause 28: A method according to any one of clauses 1 to 27, wherein: the signaling indicates a BWP switch to a first BWP; and the frequency position of the at least one UL subband or the frequency position of the at least one DL subband is indicated in a BWP configuration for the first BWP.

[0287] Clause 29: A method according to Clause 28, wherein the first BWP includes a first UL BWP indicating the frequency position of the at least one UL subband, and the method further includes: receiving a configuration of a semi-static UL BWP switching pattern indicating the BWP configuration for the first UL BWP and the BWP configuration for at least one second UL BWP; and switching from the at least one second UL BWP to the first UL BWP in response to the signaling and based on the semi-static UL BWP switching pattern.

[0288] Clause 30: A method as set forth in any one of clauses 1 to 29, wherein the signaling indication comprises a first DL BWP configuration of the at least one DL subband and a further DL subband, wherein the at least one DL subband and the further DL subband are in non-contiguous frequency bands.

[0289] Clause 31: The method according to clause 30 also includes: receiving a configuration of a CSI-RS transmitted via a bandwidth of a component carrier (CC) including the at least one DL subband and the at least one UL subband, wherein the CSI-RS has a CSI-RS resource identifier; receiving a command for reporting channel state information for the at least one DL subband and the another DL subband associated with the CSI-RS resource identifier; and reporting CSI metrics in a CSI report for the at least one DL subband and the another DL subband based on the CSI-RS within the at least one DL subband and the another DL subband corresponding to the CSI-RS associated with the CSI-RS resource identifier within the CC.

[0290] Clause 32: The method according to Clause 31 further includes: measuring the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the other DL subband, wherein the CSI metric is calculated based on the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the other DL subband rather than based on the CSI-RS associated with the CSI-RS resource identifier outside the at least one DL subband and the other DL subband.

[0291] Clause 33: A method as set forth in clause 32, wherein the UE determines the CSI-RS to be measured based on the first DL BWP configuration.

[0292] Clause 34: A method as set forth in any one of clauses 1 to 33, wherein the signaling indicates the frequency locations of the at least one DL subband and the further DL subband, wherein the at least one DL subband and the further DL subband are in non-contiguous frequency bands.

[0293] Clause 35: The method according to clause 34 further includes: receiving a DL BWP configuration including a configuration of a CSI-RS, wherein the frequency position of the DL BWP includes the frequency position of the at least one DL subband and the another DL subband, wherein the CSI-RS has a CSI-RS resource identifier; receiving a command for reporting channel state information associated with the CSI-RS resource identifier; and reporting a CSI metric in a CSI report for the at least one DL subband and the another DL subband based on the CSI-RS corresponding to the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the another DL subband.

[0294] Clause 36: The method according to Clause 35 further includes: measuring the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the other DL subband, wherein the CSI measurement is calculated based on the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the other DL subband rather than based on the CSI-RS associated with the CSI-RS resource identifier outside the at least one DL subband and the other DL subband.

[0295] Clause 37: A method according to any one of clauses 1 to 36, further comprising: receiving a configuration of a UL BWP including a configuration of an SRS to be sent by the UE via the bandwidth of the UL BWP, wherein the frequency location of the UL BWP includes the frequency location of at least one DL subband; receiving a command for sending the SRS; and sending the SRS in the at least one UL subband based on the configuration of the UL BWP without sending the SRS at a frequency location of the BWP that is not included in the UL subband.

[0296] Clause 38: A method for wireless communications by a network entity, comprising: sending signaling indicating at least one of a time location or a frequency location of at least one UL subband and at least one DL subband for SBFD communications; and performing SBFD communications in one or more symbols or time slots based on the signaling.

[0297] Clause 39: The method of clause 38, wherein the signaling comprises at least one of a MAC-CE or a DCI.

[0298] Clause 40: A method according to any one of clauses 38 and 39, wherein the signaling indicates: a starting RB index for each DL subband in the at least one DL subband; an ending RB index or at least one of an allocated bandwidth for each DL subband in the at least one DL subband; a starting RB index for each UL subband in the at least one UL subband; and at least one of an ending RB index or an allocated bandwidth for each UL subband in the at least one UL subband.

[0299] Clause 41: The method of clause 40, wherein the signaling further indicates an offset value, the offset value indicating a start time when the signaling becomes valid.

[0300] Clause 42: A method according to clause 40, wherein the signaling also indicates a symbol and time slot configuration mode, the symbol and time slot configuration mode comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0301] Clause 43: A method according to clause 42, wherein the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when the first UL subband among the multiple UL subbands and the first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when the second UL subband among the multiple UL subbands and the second DL subband among the multiple DL subbands are configured.

[0302] Clause 44: A method according to any one of clauses 38 to 43, wherein the signaling comprises: one or more indices of RB sets included in each DL subband in the at least one DL subband; and one or more indices of RB sets included in each UL subband in the at least one UL subband.

[0303] Clause 45: The method of clause 44, wherein the signaling further indicates an offset value, the offset value indicating a start time when the signaling becomes valid.

[0304] Clause 46: A method according to clause 44, wherein the signaling also indicates a symbol and time slot configuration mode, the symbol and time slot configuration mode comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0305] Clause 47: A method according to clause 46, wherein the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when the first UL subband among the multiple UL subbands and the first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when the second UL subband among the multiple UL subbands and the second DL subband among the multiple DL subbands are configured.

[0306] Clause 48: A method according to any one of clauses 38 to 47, wherein the signaling indicates: an explicit subband frequency configuration mode indicating the relationship between the frequency position of the at least one DL subband and the frequency position of the at least one UL subband; a starting RB index of a GB having a frequency between the frequency position of the at least one DL subband and the frequency position of the at least one UL subband; and at least one of an ending RB index or an allocated bandwidth of the GB.

[0307] Clause 49: A method according to clause 48, wherein the signaling also indicates: the frequency position of an additional DL subband in the at least one DL subband, wherein the explicit subband frequency configuration mode also indicates the relationship between the frequency position of the additional DL subband and the frequency position of the at least one UL subband; the starting RB index of an additional GB having a frequency between the frequency position of the additional DL subband and the frequency position of the at least one UL subband; and at least one of the ending RB index or the allocated bandwidth of the additional GB.

[0308] Clause 50: The method of clause 49, wherein the signaling further indicates an offset value, the offset value indicating a start time when the configuration becomes valid.

[0309] Clause 51: A method according to clause 49, wherein the signaling also indicates a symbol and time slot configuration mode, the symbol and time slot configuration mode comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0310] Clause 52: A method according to clause 51, wherein the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when the first UL subband among the multiple UL subbands and the first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when the second UL subband among the multiple UL subbands and the second DL subband among the multiple DL subbands are configured.

[0311] Clause 53: A method according to clause 48, wherein the signaling also indicates: the frequency position of an additional UL subband in the at least one UL subband, wherein the explicit subband frequency configuration mode also indicates the relationship between the frequency position of the additional UL subband and the frequency position of the at least one DL subband; the starting RB index of an additional GB having a frequency between the frequency position of the additional UL subband and the frequency position of the at least one DL subband; and at least one of the ending RB index or the allocated bandwidth of the additional GB.

[0312] Clause 54: The method of clause 53, wherein the signaling further indicates an offset value, the offset value indicating a start time when the signaling becomes valid.

[0313] Clause 55: A method according to clause 53, wherein the signaling also indicates a symbol and time slot configuration mode, the symbol and time slot configuration mode comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0314] Clause 56: A method according to clause 55, wherein the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when the first UL subband among the multiple UL subbands and the first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when the second UL subband among the multiple UL subbands and the second DL subband among the multiple DL subbands are configured.

[0315] Clause 57: A method according to clause 48, wherein the signaling also indicates: a starting RB index of a first edge GB, wherein the starting RB includes a first edge frequency of the CC; at least one of an ending RB index or a bandwidth of the first edge GB; a starting RB index of a second edge GB having a frequency higher than the frequency of the at least one DL subband and the frequency of the at least one UL subband; and at least one of an ending RB index or a bandwidth of the second edge GB, wherein the ending RB or the bandwidth of the second edge GB includes the second edge frequency of the CC.

[0316] Clause 58: A method according to any one of clauses 38 to 57, wherein the signaling indicates: a starting RB index of a GB having a frequency between the frequency position of the at least one DL subband and the frequency position of the at least one UL subband; at least one of an ending RB index or an allocated bandwidth of the GB; and a direction of the at least one DL subband or the at least one UL subband.

[0317] Clause 59: The method of clause 58, wherein the signaling further indicates an offset value, the offset value indicating a start time when the signaling becomes valid.

[0318] Clause 60: A method according to clause 58, wherein the signaling also indicates a symbol and time slot configuration mode, the symbol and time slot configuration mode comprising: a first indication of a set of time slots during which the signaling is valid; and a second indication of a set of symbols in each time slot in the set of time slots during which the signaling is valid.

[0319] Clause 61: A method according to clause 60, wherein the signaling also indicates the frequency positions of multiple UL subbands or the frequency positions of multiple DL subbands, and the symbol and time slot configuration pattern also includes: a third indication of a first subset of time slots in the time slot set when the first UL subband among the multiple UL subbands and the first DL subband among the multiple DL subbands are configured; and a fourth indication of a second subset of time slots in the time slot set when the second UL subband among the multiple UL subbands and the second DL subband among the multiple DL subbands are configured.

[0320] Clause 62: A method as set forth in any of clauses 38 to 61, further comprising determining not to adapt the active UL BWP or the active DL BWP in response to the signaling based on a predefined rule.

[0321] Clause 63: A method as described in any of clauses 38 to 62, further comprising adapting at least one of an active UL bandwidth portion or an active DL bandwidth portion in response to the signaling.

[0322] Clause 64: The method of any of clauses 38 to 63, further comprising: sending a BWP switching signal, wherein performing the SBFD communication comprises waiting in one or more symbols or time slots based on the signaling before performing the SBFD communication until the BWP switching signal is sent.

[0323] Clause 65: A method according to any of clauses 38 to 64, wherein the signaling indicates a BWP switch to a first BWP; and the frequency position of the at least one UL subband or the frequency position of the at least one DL subband is indicated in a BWP configuration for the first BWP.

[0324] Clause 66: A method according to clause 65, wherein the first BWP includes a first UL BWP indicating the frequency position of the at least one UL subband, and the method further includes: sending a configuration of a semi-static UL BWP switching pattern indicating the BWP configuration for the first UL BWP and the BWP configuration for at least one second UL BWP, wherein the signaling indicates switching based on the semi-static UL BWP switching pattern.

[0325] Clause 67: A method as set forth in any of clauses 38 to 66, wherein the signaling indication comprises the first DL BWP configuration of the at least one DL subband and a further DL subband, wherein the at least one DL subband and the further DL subband are in non-contiguous frequency bands.

[0326] Clause 68: The method according to clause 67 further includes: sending a configuration of a CSI-RS transmitted by the bandwidth of the CC, wherein the CSI-RS has a CSI-RS resource identifier; sending a command for reporting channel state information for the at least one DL subband and the another DL subband associated with the CSI-RS resource identifier; and receiving a CSI metric in a CSI report for the at least one DL subband and the another DL subband based on the CSI-RS in the at least one DL subband and the another DL subband corresponding to the CSI-RS associated with the CSI-RS resource identifier in the CC

[0327] Clause 69: A method according to clause 68, wherein the CSI metric is calculated based on the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the other DL subband rather than based on the CSI-RS associated with the CSI-RS resource identifier outside the at least one DL subband and the other DL subband.

[0328] Clause 70: A method as set forth in any one of clauses 38 to 69, wherein the signaling indicates the frequency locations of the at least one DL subband and the further DL subband, wherein the at least one DL subband and the further DL subband are in non-contiguous frequency bands.

[0329] Clause 71: The method according to clause 70 further includes: sending a DL BWP configuration including a configuration of a CSI-RS, wherein the frequency position of the DL BWP includes the frequency position of the at least one DL subband and the another DL subband, wherein the CSI-RS has a CSI-RS resource identifier; sending a command for reporting channel state information associated with the CSI-RS resource identifier; and receiving a CSI metric in a CSI report for the at least one DL subband and the another DL subband based on the CSI-RS corresponding to the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the another DL subband.

[0330] Clause 72: A method according to clause 71, wherein the CSI metric is calculated based on the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the other DL subband rather than based on the CSI-RS associated with the CSI-RS resource identifier outside the at least one DL subband and the other DL subband.

[0331] Clause 73: A method according to any one of clauses 38 to 72, further comprising: sending a configuration of a UL BWP including a configuration of an SRS to be sent via a bandwidth of the UL BWP, wherein a frequency location of the UL BWP includes the frequency location of the at least one DL subband; sending a command for sending the SRS; and receiving the SRS in the UL subband based on the configuration of the UL subband configuration without receiving the SRS at a frequency location of the BWP that is not included in the UL subband.

[0332] Clause 74: An apparatus comprising: a memory including executable instructions; and a processor configured to execute the executable instructions and cause the apparatus to perform the method of any one of clauses 1 to 73.

[0333] Clause 75: An apparatus comprising: means for performing the method of any one of clauses 1 to 73.

[0334] Clause 76: A non-transitory computer readable medium comprising executable instructions that, when executed by a processor of an apparatus, cause the apparatus to perform the method of any of clauses 1 to 73.

[0335] Clause 77: A computer program product embodied on a computer readable storage medium, the computer program product comprising code for performing the method according to any of clauses 1 to 73.

[0336] Additional considerations

[0337] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. The examples discussed herein do not limit the scope, applicability or aspects set forth in the claims. 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. For example, without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Various examples may omit, replace or add various processes or components as appropriate. For example, the described methods may be performed in a different order from the described order, and various actions may be added, omitted or combined. In addition, the features described with respect to some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functionality or structures and functionality other than the various aspects of the present disclosure set forth herein or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

[0338] The various illustrative logic blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or performed using a general purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. Although a general purpose processor may be a microprocessor, in an alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, a system on a chip (SoC), or any other such configuration.

[0339] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items (including single members). As an example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0340] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include computing, calculating, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, and the like. Additionally, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. Furthermore, "determining" may include resolving, selecting, choosing, establishing, and the like.

[0341] The method disclosed herein includes one or more actions for implementing the method. The method actions may be interchangeable with each other without departing from the scope of the claims. In other words, unless a specified order of actions is specified, the order and / or use of specific actions may be modified without departing from the scope of the claims. In addition, the various operations of the above-mentioned method may be performed by any suitable component capable of performing the corresponding function. The component may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors.

[0342] The following claims are not intended to be limited to the various aspects shown herein, but should be given the full scope consistent with the language of the claims. Within the claims, unless explicitly stated, reference to an element in the singular form is not intended to mean "one and only one", but "one or more". Unless otherwise specified, the term "some" refers to one or more. Any claim element is not interpreted according to the provisions of 35 U.S.C. § 112 (f) unless the element is explicitly stated using the phrase "parts for...". All structural and functional equivalents of the elements of the various aspects described throughout this disclosure that are known or will be known later to a person of ordinary skill in the art are expressly incorporated herein by reference and are intended to be 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.

Claims

1. An apparatus for wireless communication at a user equipment (UE), comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the UE to: receiving signaling indicating at least one of a time location or a frequency location of at least one uplink (UL) subband and at least one downlink (DL) subband for sub-band full duplex (SBFD) communications; as well as SBFD communication is performed in one or more symbols or time slots based on the signaling.

2. The apparatus of claim 1, wherein the signaling comprises at least one of a medium access control element (MAC-CE) or downlink control information (DCI).

3. The apparatus according to claim 1, wherein the signaling indicates: a starting resource block (RB) index for each of the at least one DL subband, at least one of an ending RB index or an allocated bandwidth for each of the at least one DL subband, a starting RB index for each of the at least one UL subband, and at least one of an ending RB index or an allocated bandwidth for each of the at least one UL subband; or A starting resource block (RB) index of a guard band (GB) having a frequency between the frequency position of the at least one DL subband and the frequency position of the at least one UL subband, at least one of an ending RB index or an allocated bandwidth of the GB, and at least one of an ending RB index or an allocated bandwidth and a starting resource block (RB) index of the GB of at least one or more DL subbands or the at least one UL subband.

4. The apparatus of claim 3, wherein the signaling further indicates at least one of: an offset value indicating a start time when the signaling becomes valid; or A symbol and time slot configuration mode, wherein the symbol and time slot configuration mode comprises: a first indication of a set of time slots during which the signaling is valid; as well as A second indication of a set of symbols in each slot in the set of slots during which the signaling is valid.

5. The apparatus according to claim 4, wherein the signaling indicates the symbol and time slot configuration mode and further indicates the frequency positions of a plurality of UL subbands or the frequency positions of a plurality of DL subbands, and the symbol and time slot configuration mode further comprises: a third indication of a first subset of time slots in the set of time slots when a first UL subband in the plurality of UL subbands and a first DL subband in the plurality of DL subbands are configured; and A fourth indication of a second subset of time slots in the set of time slots when a second UL subband in the plurality of UL subbands and a second DL subband in the plurality of DL subbands are configured.

6. The apparatus of claim 1, wherein the signaling comprises: one or more indices of a set of resource blocks (RBs) included in each DL subband of the at least one DL subband; as well as One or more indices of a set of resource blocks (RBs) in each UL subband in the at least one UL subband are included.

7. The apparatus of claim 6, wherein the signaling further indicates at least one of: an offset value indicating a start time when the signaling becomes valid; or A symbol and time slot configuration mode, wherein the symbol and time slot configuration mode comprises: a first indication of a set of time slots during which the signaling is valid; as well as A second indication of a set of symbols in each slot in the set of slots during which the signaling is valid.

8. The apparatus according to claim 7, wherein the signaling indicates the symbol and time slot configuration mode and further indicates the frequency positions of a plurality of UL subbands or the frequency positions of a plurality of DL subbands, and the symbol and time slot configuration mode further comprises: a third indication of a first subset of time slots in the set of time slots when a first UL subband in the plurality of UL subbands and a first DL subband in the plurality of DL subbands are configured; and A fourth indication of a second subset of time slots in the set of time slots when a second UL subband in the plurality of UL subbands and a second DL subband in the plurality of DL subbands are configured.

9. The apparatus of claim 1, wherein the signaling indicates: an explicit sub-band frequency configuration pattern indicating a relationship of the frequency position of the at least one DL sub-band to the frequency position of the at least one UL sub-band; a starting resource block (RB) index of a guard band (GB) having a frequency between the frequency position of the at least one DL subband and the frequency position of the at least one UL subband; and At least one of an ending RB index or an allocated bandwidth of the GB.

10. The apparatus according to claim 9, wherein the signaling further indicates: a frequency position of an additional DL subband in the at least one DL subband, wherein the explicit subband frequency configuration pattern further indicates a relationship of the frequency position of the additional DL subband to the frequency position of the at least one UL subband, a starting resource block (RB) index of an additional GB having a frequency between the frequency position of the additional DL subband and the frequency position of the at least one UL subband, and at least one of an ending RB index or an allocated bandwidth of the additional GB; or The explicit subband frequency configuration pattern further indicates a frequency position of an additional UL subband in the at least one UL subband, wherein the explicit subband frequency configuration pattern further indicates a relationship between the frequency position of the additional UL subband and the frequency position of the at least one DL subband, a starting resource block (RB) index of an additional GB having a frequency between the frequency position of the additional UL subband and the frequency position of the at least one DL subband, and at least one of an ending RB index or an allocated bandwidth of the additional GB.

11. The apparatus of claim 10, wherein the signaling further indicates at least one of: an offset value indicating a start time when the explicit sub-band frequency configuration mode becomes valid; or A symbol and time slot configuration mode, wherein the symbol and time slot configuration mode comprises: a first indication of a set of time slots during which the signaling is valid; as well as A second indication of a set of symbols in each slot in the set of slots during which the signaling is valid.

12. The apparatus according to claim 11, wherein the signaling indicates the symbol and time slot configuration mode and further indicates the frequency positions of a plurality of UL subbands or the frequency positions of a plurality of DL subbands, and the symbol and time slot configuration mode further comprises: a third indication of a first subset of time slots in the set of time slots when a first UL subband in the plurality of UL subbands and a first DL subband in the plurality of DL subbands are configured; and A fourth indication of a second subset of time slots in the set of time slots when a second UL subband in the plurality of UL subbands and a second DL subband in the plurality of DL subbands are configured.

13. The apparatus according to claim 9, wherein the signaling further indicates: a starting resource block (RB) index of a first edge GB, wherein the starting RB includes a first edge frequency of a component carrier (CC) including the at least one DL subband and the at least one UL subband; at least one of an end RB index or a bandwidth of the first edge GB; a starting resource block (RB) index of a second edge GB having a frequency higher than the frequency of the at least one DL subband and the frequency of the at least one UL subband; and At least one of an end RB index or a bandwidth of the second edge GB, wherein the end RB or the bandwidth of the second edge GB comprises a second edge frequency of the CC.

14. The apparatus of claim 1, wherein the instructions are executable by the processor to cause the UE to further perform at least one of: determining based on predefined rules not to adapt an active UL bandwidth part (BWP) or an active DLBWP in response to the signaling; adapting at least one of an active UL bandwidth portion or an active DL bandwidth portion in response to the signaling; or receiving a bandwidth part (BWP) switching signal, wherein the instructions are executable by the processor to cause the UE to perform the SBFD communication comprises the instructions being executable by the processor to cause the UE to wait in one or more symbols or time slots based on the signaling until the BWP switching signal is received before performing the SBFD communication.

15. The device according to claim 1, wherein: The signaling indicates a BWP switch to a first bandwidth part (BWP); and The frequency position of the at least one UL sub-band or the frequency position of the at least one DL sub-band is indicated in a BWP configuration for the first BWP.

16. The apparatus of claim 15, wherein the first BWP comprises a first UL BWP indicating the frequency location of the at least one UL subband, and wherein the instructions are executable by the processor to cause the UE to further: receiving a configuration of a semi-static UL BWP switching pattern indicating the BWP configuration for the first UL BWP and a BWP configuration for at least one second UL BWP; and and switching from the at least one second UL BWP to the first UL BWP in response to the signaling and based on the semi-static UL BWP switching pattern.

17. The apparatus of claim 1, wherein the signaling indication includes a first DL bandwidth part (BWP) configuration of the at least one DL subband and another DL subband, wherein the at least one DL subband and the another DL subband are in non-contiguous frequency bands.

18. The apparatus of claim 17, wherein the instructions are executable by the processor to cause the UE to further: receiving a configuration of a channel state information reference signal (CSI-RS) transmitted via a bandwidth of a component carrier (CC) including the at least one DL subband and the at least one UL subband, wherein the CSI-RS has a CSI-RS resource identifier; receiving a command for reporting channel state information for the at least one DL subband and the another DL subband associated with the CSI-RS resource identifier; and CSI metrics are reported in CSI reports for the at least one DL subband and the another DL subband based on the CSI-RS within the at least one DL subband and the another DL subband corresponding to the CSI-RS associated with the CSI-RS resource identifier within the CC.

19. The apparatus of claim 18, wherein the instructions are executable by the processor to cause the UE to further: and measuring the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the another DL subband, wherein the CSI metric is calculated based on the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the another DL subband and not based on the CSI-RS associated with the CSI-RS resource identifier outside the at least one DL subband and the another DL subband.

20. The apparatus of claim 19, wherein the instructions are executable by the processor to cause the UE to determine the CSI-RS to measure based on the first DL BWP configuration.

21. The apparatus of claim 1, wherein the signaling indicates the frequency locations of the at least one DL subband and another DL subband, wherein the at least one DL subband and the another DL subband are in non-contiguous frequency bands.

22. The apparatus of claim 21, wherein the instructions are executable by the processor to cause the UE to further: receiving a DL bandwidth part (BWP) configuration including a configuration of a channel state information reference signal (CSI-RS), wherein a frequency location of the DL BWP includes the frequency location of the at least one DL subband and the another DL subband, wherein the CSI-RS has a CSI-RS resource identifier; receiving a command for reporting channel state information associated with the CSI-RS resource identifier; and CSI metrics are reported in CSI reports for the at least one DL subband and the another DL subband based on the CSI-RS within the at least one DL subband and the another DL subband corresponding to the CSI-RS associated with the CSI-RS resource identifier.

23. The apparatus of claim 22, wherein the instructions are executable by the processor to cause the UE to further: and measuring the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the another DL subband, wherein the CSI metric is calculated based on the CSI-RS associated with the CSI-RS resource identifier within the at least one DL subband and the another DL subband and not based on the CSI-RS associated with the CSI-RS resource identifier outside the at least one DL subband and the another DL subband.

24. The apparatus of claim 1, wherein the instructions are executable by the processor to cause the UE to further: receiving a configuration of a UL bandwidth part (BWP), the configuration comprising a configuration of a sounding reference signal (SRS) to be sent by the UE via a bandwidth of the UL BWP, wherein a frequency location of the UL BWP comprises the frequency location of the at least one DL subband; receiving a command for sending an SRS; and An SRS is transmitted in the at least one UL subband based on the configuration of the UL BWP, and an SRS is not transmitted at a frequency position of the BWP that is not included in the UL subband.

25. An apparatus for wireless communication at a network entity, comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the network entity to: transmitting signaling indicating at least one of a time location or a frequency location of at least one uplink (UL) subband and at least one downlink (DL) subband for sub-band full duplex (SBFD) communication; as well as SBFD communication is performed in one or more symbols or time slots based on the signaling.

26. The apparatus of claim 25, wherein the signaling comprises at least one of a Medium Access Control Element (MAC-CE) or Downlink Control Information (DCI).

27. The apparatus of claim 25, wherein the signaling indicates: a starting resource block (RB) index for each of the at least one DL subband, at least one of an ending RB index or an allocated bandwidth for each of the at least one DL subband, a starting RB index for each of the at least one UL subband, and at least one of an ending RB index or an allocated bandwidth for each of the at least one UL subband; or A starting resource block (RB) index of a guard band (GB) having a frequency between the frequency position of the at least one DL subband and the frequency position of the at least one UL subband, at least one of an ending RB index or an allocated bandwidth of the GB, and a direction of the at least one DL subband or the at least one UL subband.

28. The apparatus of claim 27, wherein the signaling further indicates an offset value, the offset value indicating a start time when the signaling becomes valid.

29. A method for wireless communication by a user equipment (UE), comprising: receiving signaling indicating at least one of a time location or a frequency location of at least one uplink (UL) subband and at least one downlink (DL) subband for sub-band full duplex (SBFD) communications; as well as SBFD communication is performed in one or more symbols or time slots based on the signaling.

30. A method for wireless communication by a network entity, comprising: transmitting signaling indicating at least one of a time location or a frequency location of at least one uplink (UL) subband and at least one downlink (DL) subband for sub-band full duplex (SBFD) communication; as well as SBFD communication is performed in one or more symbols or time slots based on the signaling.

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