Method and apparatus for full duplex of available resources

Abstract

A method of wireless communication at a user equipment (UE), comprising receiving an indication of available frequency resources; receiving direction information; and determining, based on the direction information, one or more communication directions for each of the available frequency resources. The method further includes communicating with a base station using the available frequency resources based on the one or more communication directions determined for each of the available frequency resources.

Description

[0001] Related applications

[0002] This application claims priority to U.S. Application No. 17 / 469,756, filed September 8, 2021, and U.S. Provisional Application No. 63 / 079,916, filed September 17, 2020, the entire specifications of which are incorporated herein by reference. Technical Field

[0003] The aspects of this disclosure generally relate to wireless communication, and more specifically, to full-duplex access to available resources. Background Technology

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcasting. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems (e.g., Long Term Evolution (LTE) systems, improved LTE (LTE-A) systems, or LTE-A Pro systems) and fifth-generation (5G) systems (which may be referred to as New Radio (NR) systems). These systems can employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Spread Spectrum OFDM (DFT-S-OFDM). Wireless multiple access communication systems can include multiple base stations or network access nodes, each supporting communication with multiple communication devices (which may also be referred to as User Equipment (UE)) simultaneously.

[0005] A base station (e.g., gNB) and a UE in a wireless system (e.g., an NR system) can communicate with each other in a spectrum (e.g., unlicensed spectrum) shared with devices in another wireless system (e.g., a WiFi system). To avoid interfering with devices in the other wireless system, the base station can sense the spectrum (e.g., during a Listen-Before-Talk (LBT) process) to determine which portions of the spectrum are available (e.g., unoccupied). The base station can then send control messages (e.g., downlink control information (DCI)) to the UE to indicate one or more available portions of the spectrum. The base station and the UE can then communicate with each other using one or more available portions of the spectrum. Summary of the Invention

[0006] To provide a basic understanding of one or more implementations, a simplified summary of these implementations is given below. This summary is not a comprehensive overview of all anticipated implementations, nor is it intended to identify key or necessary elements of all implementations, nor to describe the scope of any or all implementations. Its sole purpose is to present some concepts of one or more implementations in a simplified form as a prelude to the more detailed descriptions that follow.

[0007] The first aspect relates to a method for wireless communication at a user equipment (UE). The method includes: receiving an indication of available frequency resources; receiving direction information; determining one or more communication directions for each of the available frequency resources based on the direction information; and communicating with a base station using the available frequency resources based on the one or more communication directions determined for each of the available frequency resources.

[0008] The second aspect relates to an apparatus for wireless communication. The apparatus includes: a processor; a memory coupled to the processor; and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: receive an indication of available frequency resources; receive direction information; determine one or more communication directions for each of the available frequency resources based on the direction information; and communicate with a base station using the available frequency resources based on the one or more communication directions determined for each of the available frequency resources.

[0009] The third aspect relates to an apparatus for wireless communication at a user equipment (UE). The apparatus may include: a unit for receiving an indication of available frequency resources; a unit for receiving direction information; a unit for determining one or more communication directions for each of the available frequency resources based on the direction information; and a unit for communicating with a base station using the available frequency resources based on the one or more communication directions determined for each of the available frequency resources.

[0010] The fourth aspect relates to a method for wireless communication at a base station. The method includes: determining available frequency resources from a plurality of frequency resources; generating an indication of the available frequency resources; sending the indication and direction information of the available frequency resources to a user equipment (UE); and communicating with the UE using the available frequency resources based on the direction information.

[0011] A fifth aspect relates to an apparatus for wireless communication. The apparatus includes: a processor; a memory coupled to the processor; and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: determine available frequency resources from a plurality of frequency resources; generate an indication of the available frequency resources; send the indication and direction information of the available frequency resources to a user equipment (UE); and communicate with the UE using the available frequency resources based on the direction information.

[0012] A sixth aspect relates to an apparatus for wireless communication at a base station. The apparatus includes: units for determining available frequency resources from a plurality of frequency resources; units for generating an indication of the available frequency resources; units for transmitting the indication and direction information of the available frequency resources to a user equipment (UE); and units for communicating with the UE using the available frequency resources based on the direction information.

[0013] To achieve the foregoing and related objectives, one or more implementations include the features fully described and specifically pointed out in the claims. The following description and drawings illustrate certain illustrative aspects of one or more implementations in detail. However, these aspects indicate only a few of the various ways in which the principles of the various implementations may be employed, and the described implementations are intended to include all such aspects and their equivalents. Attached Figure Description

[0014] Figure 1 An example of a wireless communication system according to certain aspects of this disclosure is shown.

[0015] Figure 2 An example of communication between a base station and a UE according to certain aspects of this disclosure is shown.

[0016] Figure 3A An exemplary frequency allocation for full-duplex operation is shown according to certain aspects of this disclosure.

[0017] Figure 3B Another exemplary frequency allocation for full-duplex operation is shown in accordance with certain aspects of this disclosure.

[0018] Figure 3C Another exemplary frequency allocation for full-duplex operation is shown in accordance with certain aspects of this disclosure.

[0019] Figure 3D Another exemplary frequency allocation for full-duplex operation is shown in accordance with certain aspects of this disclosure.

[0020] Figure 4A An exemplary frequency allocation for in-band full-duplex is shown according to certain aspects of this disclosure.

[0021] Figure 4B Another exemplary frequency allocation for in-band full-duplex is shown according to certain aspects of this disclosure.

[0022] Figure 4C Another exemplary frequency allocation for in-band full-duplex is shown according to certain aspects of this disclosure.

[0023] Figure 4D Another exemplary frequency allocation for in-band full-duplex is shown according to certain aspects of this disclosure.

[0024] Figure 5 An example of a resource allocation scheme that supports a resource format indicator for full-duplex resource allocation according to certain aspects of this disclosure is shown.

[0025] Figure 6 Another example of a resource allocation scheme that supports a resource format indicator for full-duplex resource allocation according to certain aspects of this disclosure is shown.

[0026] Figure 7 An example is shown of combining two frequency formats according to certain aspects of this disclosure to obtain a new frequency format.

[0027] Figure 8 An example of frequency resources shared by multiple wireless systems according to certain aspects of this disclosure is shown.

[0028] Figure 9 It shows certain aspects of this disclosure and Figure 8 An example of a set of resource blocks (RBs) corresponding to a frequency resource in the data.

[0029] Figure 10 An example is shown of assigning communication directions to available frequency resources in accordance with certain aspects of this disclosure.

[0030] Figure 11 An example is shown of mapping communication directions in a frequency format to available frequency resources in accordance with certain aspects of this disclosure.

[0031] Figure 12 Another example is shown of mapping the communication direction in a frequency format to available frequency resources in accordance with certain aspects of this disclosure.

[0032] Figure 13 An example device in which various aspects of this disclosure can be implemented is shown.

[0033] Figure 14 This is a flowchart illustrating a method of wireless communication at a UE according to certain aspects of this disclosure.

[0034] Figure 15This is a flowchart illustrating a method of wireless communication at a base station according to certain aspects of this disclosure. Detailed Implementation

[0035] The detailed description that follows, taken in conjunction with the accompanying drawings, is intended as a description of various configurations, and not as representing the only configuration in which the concepts described herein can be practiced. The detailed description includes specific details used to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring these concepts.

[0036] Figure 1 Examples of wireless communication systems 100 that can perform aspects of this disclosure are shown. Wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, wireless communication system 100 may be a Long Term Evolution (LTE) network, an improved LTE (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, or communication with low-cost and low-complexity devices, or any combination thereof.

[0037] Base stations 105 can be distributed throughout a geographical area to form a wireless communication system 100, and can be devices of different forms or with different capabilities. Base stations 105 and UE 115 can communicate wirelessly via one or more communication links 125. Each base station 105 can provide a coverage area 110, on which UE 115 and base station 105 can establish one or more communication links 125. Coverage area 110 can be an example of a geographical area where base station 105 and UE 115 can support signal transmission according to one or more wireless access technologies.

[0038] UE 115 can be distributed throughout the entire coverage area 110 of the wireless communication system 100, and each UE 115 can be stationary, mobile, or both at different times. UE 115 can be devices of different forms or with different capabilities. Figure 1 Some example UE 115s are shown in the document. The UE 115 described herein is capable of communicating with various types of devices, such as other UE 115s, base station 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices). Figure 1 As shown.

[0039] Base station 105 can communicate with core network 130, communicate with each other, or perform both operations. For example, base station 105 can interface with core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base station 105 can communicate directly (e.g., directly between base stations 105) on backhaul links 120 (e.g., via X2, Xn, or other interfaces), or indirectly (e.g., via core network 130), or perform both operations. In some examples, backhaul link 120 can be one or more radio links or may include one or more radio links.

[0040] One or more of the base stations 105 described herein may include, or may be referred to by those skilled in the art as, a base station transceiver, a wireless base station, an access point, a wireless transceiver, a node B, an evolved node B (eNB), a next-generation node B or a gigabit node B (any of which may be referred to as gNB), a home node B, a home evolved node B, or some other suitable term.

[0041] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or user equipment, or some other suitable term, wherein "device" may also be referred to as a cell, station, terminal, or client, and other examples. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, among others, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, which, among other examples, may be implemented in various objects such as electrical appliances, vehicles, or instruments.

[0042] The UE 115 described herein is capable of communicating with various types of devices, such as other UEs 115 that can sometimes act as repeaters, as well as base station 105 and network devices, including, among other examples, macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, such as... Figure 1 As shown in the image.

[0043] UE 115 and base station 105 can communicate wirelessly with each other via one or more communication links 125 on one or more carriers. The term "carrier" refers to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling, user data, or other signaling coordinating the operation of the carrier. Wireless communication system 100 can support communication with UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used in conjunction with both frequency division duplex (FDD) component carriers and TDD component carriers.

[0044] The signal waveform transmitted on a carrier can consist of multiple subcarriers (e.g., using multicarrier modulation (MCM) techniques such as Orthogonal Frequency Division Multiplexing (OFDM) or Discrete Fourier Transform Spread Spectrum OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element can consist of one symbol period (e.g., the duration of a modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element can depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Therefore, the more resource elements UE 115 receives and the higher the order of the modulation scheme, the higher the data rate can be for UE 115. Wireless communication resources can refer to a combination of radio frequency spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers can further increase the data rate or data integrity used for communication with UE 115.

[0045] It can be in the basic unit of time (which can be, for example, referred to as) The sampling period is seconds, where It can represent the maximum supported subcarrier spacing, and The time intervals used for base station 105 or UE 115 can be represented as multiples of the maximum supported Discrete Fourier Transform (DFT) size. The time intervals of communication resources can be organized based on radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0046] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple symbol periods (e.g., this depends on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple micro-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., (Number) sampling periods. The duration of a symbol period can depend on the subcarrier spacing or the operating frequency band.

[0047] A subframe, time slot, micro-time slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0048] Physical channels can be multiplexed on a carrier using various techniques. For example, one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques can be used to multiplex physical control channels and physical data channels on a downlink carrier. A control region (e.g., a control resource set (CORESET)) for physical control channels can be defined by multiple symbol periods and can extend over the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) can be configured for a set of UEs 115. For example, one or more UEs in UE 115 can monitor or search for control regions for control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for control channel candidates can refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space set may include a common search space set configured to send control information to multiple UEs 115 and a UE-specific search space set used to send control information to a specific UE 115.

[0049] In some examples, base station 105 may be mobile, and therefore provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. Wireless communication system 100 may include, for example, a heterogeneous network, in which different types of base stations 105 use the same or different wireless access technologies to provide coverage for various geographic coverage areas 110.

[0050] Wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, wireless communication system 100 can be configured to support ultra-reliable low-latency (URLLC) or mission-critical communication. UE 115 can be designed to support ultra-reliable, low-latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private or group communication and can be supported by one or more mission-critical services, such as mission-critical push-to-talk, mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions can include service prioritization, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency are used interchangeably herein.

[0051] In some examples, UE 115 can also communicate directly with other UE 115s on a device-to-device (D2D) communication link 135 (e.g., using peer-to-peer (P2P) or D2D protocols). One or more UEs 115s utilizing D2D communication can be within the geographic coverage area 110 of base station 105. Other UEs 115s in such a group can be outside the geographic coverage area 110 of base station 105, or otherwise unable to receive transmissions from base station 105. In some examples, multiple groups of UEs 115 communicating via D2D communication can utilize a one-to-many (1:M) system, where each UE 115 transmits to every other UE 115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without involving base station 105.

[0052] Core network 130 can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC), and can include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function Unit (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function Unit (UPF)) for routing or interconnecting packets to external networks. The control plane entity can manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by base station 105 associated with core network 130. User IP packets can be transmitted through the user plane entity, which can provide IP address allocation and other functions. The user plane entity can connect to network operator IP service 150. Carrier IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0053] Some network devices (e.g., base station 105) may include sub-components such as access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with UE 115 through one or more other access network transport entities 145 (which may be referred to as a radio headend, smart radio headend, or transmit / receive point (TRP)). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across individual network devices (e.g., radio headends and ANCs) or incorporated into a single network device (e.g., base station 105).

[0054] Wireless communication system 100 can operate using one or more frequency bands (typically in the range of 300 MHz to 300 GHz). The region from 300 MHz to 3 GHz is generally referred to as the Ultra High Frequency (UHF) region or decimeter band because the wavelength range extends from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, but the waves can be sufficiently permeable to penetrate structures for use in macrocells to provide service to UE 115 located indoors. Compared to the transmission of smaller frequencies and longer waves in the lower 300 MHz portion of the spectrum, such as the High Frequency (HF) or Very High Frequency (VHF), UHF wave transmission can be associated with smaller antennas and shorter distances (e.g., less than 100 km).

[0055] Wireless communication system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, wireless communication system 100 can employ Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) radio access technology, or NR technology in unlicensed frequency bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). When operating in unlicensed radio frequency spectrum bands, devices (such as base station 105 and UE 115) can employ carrier sensing for collision detection and avoidance. In some examples, operation in unlicensed frequency bands can be based on carrier aggregation configurations that combine component carriers operating in licensed frequency bands (e.g., LAA). Among other examples, operation in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions.

[0056] Base station 105 or UE 115 may be equipped with multiple antennas, which can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels (which may support MIMO operation or transmit or receive beamforming). For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may have antenna arrays with rows and columns of antenna ports that base station 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, antenna panels may support radio frequency beamforming for signals transmitted via antenna ports.

[0057] Base station 105 or UE 115 can use MIMO communication to utilize multipath signal propagation and increase spectral efficiency by sending or receiving multiple signals via different spatial layers. This technique is known as spatial multiplexing. For example, multiple signals can be transmitted by a transmitting device via different antennas or different combinations of antennas. Similarly, multiple signals can be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals can be referred to as a separate spatial stream and can carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers can be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO) and multi-user MIMO (MU-MIMO), in which multiple spatial layers are sent to the same receiving device, and in MU-MIMO, multiple spatial layers are sent to multiple devices.

[0058] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., base station 105 or UE 115) to form or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array such that some signals propagating in a specific orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to the signals transmitted via the antenna elements can include applying amplitude offset, phase offset, or both to the signals carried via the antenna elements associated with the transmitting or receiving device. The adjustments associated with each antenna element can be defined by a set of beamforming weights associated with a specific orientation (e.g., relative to the antenna array of the transmitting or receiving device, or relative to some other orientation).

[0059] As part of beamforming operations, base station 105 or UE 115 may use beam scanning techniques. For example, base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with UE 115. Base station 105 may transmit some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) multiple times in different directions. For example, base station 105 may transmit signals according to different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by a transmitting device (such as base station 105) or by a receiving device (such as UE 115)) to identify the beam direction for subsequent transmissions or receptions performed by base station 105.

[0060] Base station 105 may transmit signals (e.g., data signals associated with a specific receiving device, such as UE 115) in a single beam direction (e.g., a direction associated with a particular receiving device, such as UE 115). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 that has the highest signal quality or otherwise acceptable signal quality.

[0061] In some examples, multiple beam directions can be used to perform transmissions by a device (e.g., base station 105 or UE 115), and the device can use a combination of digital precoding or radio frequency beamforming to generate combined beams for (e.g., from base station 105 to UE 115) transmissions. UE 115 can report feedback indicating precoding weights for one or more beam directions, and this feedback can correspond to a configured number of beams spanning the system bandwidth or one or more subbands. Base station 105 can transmit reference signals that can be precoded or unprecoded (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)). UE 115 can provide feedback on beam selection, which can be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel type codebook, linear combination type codebook, port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may employ similar techniques to transmit signals multiple times in different directions (e.g., to identify beam directions for subsequent transmissions or receptions by UE 115) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0062] When receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105, the receiving device (e.g., UE 115) can attempt multiple receiving configurations (e.g., directional listening). For example, the receiving device can attempt multiple receiving directions by receiving via different antenna subarrays, by processing the received signals according to different antenna subarrays, by receiving according to different sets of receiving beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different sets of directional listening weights), or by processing the received signals according to different sets of receiving beamforming weights applied to signals received at multiple antenna elements of the antenna array (any of these operations can be referred to as "listening" according to different receiving configurations or receiving directions). In some examples, the receiving device can use a single receiving configuration to receive along a single beam direction (e.g., when receiving data signals). A single receiver configuration can be aligned to a beam direction determined based on listening in different receiver configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality based on listening in multiple beam directions).

[0063] UE 115 and base station 105 can support data retransmission to increase the likelihood of successful data reception. Hybrid Automatic Repeat Request (HARQ) feedback is a technique used to increase the likelihood of correct data reception on communication link 125. HARQ can include a combination of error detection (e.g., using Cyclic Redundancy Check (CRC)), forward error correction (FEC), and retransmission (e.g., Automatic Repeat Request (ARQ)). HARQ can improve throughput at the MAC layer under poor radio conditions (e.g., low signal and noise conditions). In some examples, the device can support same-slot HARQ feedback, where the device can provide HARQ feedback for data received in a previous symbol within a specific time slot. In other cases, the device can provide HARQ feedback in subsequent time slots or according to some other time interval.

[0064] The UE 115 and base station 105 of the wireless communication system 100 can support communication for signaling resource allocation of full-duplex time slots allocated for communication at the UE 115. Specifically, the UE 115 can receive from the base station 105 a configuration for interpreting resource format indicators, which indicate the resource format (e.g., uplink format, downlink format, flexible format, full-duplex format) of the time period (e.g., time slot) of communication resources allocated to the UE 115. The base station 105 can indicate the configuration for interpreting the resource format indicators via Radio Resource Control (RRC) signaling, control messages, configuration messages, or any combination thereof. The UE 115 can also receive control messages (e.g., downlink control information (DCI)) from the base station 105, wherein the control messages include resource format indicators for one or more time periods. Based on the configuration and resource format indicators, the UE 115 can determine the resource format (e.g., uplink format, downlink format, flexible format, and full-duplex format) for the time period, and can also determine the frequency resource allocation for each time period including symbols with full-duplex format.

[0065] For the purposes of this disclosure, the term "time period" may be used to refer to any time period resource allocated to wireless communication. In this regard, the term "time period" may be used interchangeably with the term "time slot." However, this should not be considered a limitation of this disclosure. Furthermore, the term "resource format indicator" may refer to any indication, index, table, or storage object used to indicate the resource format (e.g., uplink format, downlink format, flexible format, full-duplex format) of a time slot allocated to the resource UE 115. In this regard, resource format indicators may include, but are not limited to, time slot format indicators (SFI).

[0066] By way of example, base station 105 can transmit downlink transmissions that include instructions for interpreting resource format indicators assigned to UE 115. In some aspects, the configuration received and recognized by UE 115 for interpreting resource format indicators may cause different UEs 115 to interpret the same resource format indicator differently. For example, a resource format indicator indicating index "1" may be interpreted differently by first UE 115-a and second UE 115-b according to their respective configurations. For example, first UE 115-a may interpret index "1" as indicating an uplink resource format, while second UE 115-b may interpret index "1" as indicating a full-duplex resource format.

[0067] Continuing with the same example, UE 115 can also receive control messages (e.g., DCI, Group Common DCI (GC-DCI)) that include resource format indicators for the set of time slots allocated to UE 115. Based on the configuration and resource format indicators, UE 115 can determine the resource format for each time slot (e.g., uplink format, downlink format, and full-duplex format), and can also determine the frequency resource allocation for each time slot including symbols with full-duplex format. In some aspects, the resource format indicators can be indicated in the GC-DCI, thereby enabling each corresponding UE 115 to interpret the same GC-DCI according to the corresponding configuration associated with UE 115.

[0068] In some aspects, both the resource format and frequency resource allocation for time slots with full-duplex format can be indicated in different portions (e.g., different bits) of the resource format indicator. In additional or alternative aspects, the resource format can be indicated in the resource format indicator, while the frequency resource allocation for time slots with full-duplex format can be indicated in separate designated (e.g., reserved) portions of the control message, which are reserved for indicating the frequency resource allocation. Furthermore, in some aspects, the combined configuration for interpreting the resource format indicator can include both a time resource allocation scheme and a frequency resource allocation scheme. In this case, UE 115 can utilize the combined configuration to determine both the resource format and frequency resource allocation based on the storage object indicated via the resource format indicator (e.g., the SFI storage object indicates both the resource format and frequency resource allocation).

[0069] The techniques described herein can provide more flexible resource allocation. Specifically, the techniques described herein can support signaling for full-duplex formats, as well as signaling for frequency resource allocation associated with time periods including symbols having full-duplex formats. Furthermore, by sending a single GC-DCI transmission to a group of UEs 115 to indicate resource format indicators (e.g., SFI), base station 105 can reduce control signaling used to transmit resource format indicators, thereby reducing resource and message transmission overhead within the wireless communication system 100.

[0070] Figure 2 An example of a wireless communication system 200 supporting resource format indicators for full-duplex resource allocation according to various aspects of this disclosure is shown. In some examples, the wireless communication system 200 may implement various aspects of the wireless communication system 100. The wireless communication system 200 may include a UE 115-a and a base station 105-a, which may be examples of UE 115 and base station 105, as referenced. Figure 1 As stated above.

[0071] UE 115-a can communicate with base station 105-a using communication link 205. In some cases, communication link 205 may include an example of an access link (e.g., a Uu link). Communication link 205 may include a bidirectional link, which may include both uplink and downlink communication. For example, UE 115-a can use communication link 205 to send uplink transmissions 220, such as uplink control signals or uplink data signals, to base station 105-a, and base station 105-a can use communication link 205 to send downlink transmissions, such as downlink control signals or downlink data signals, to UE 115-a.

[0072] The UE 115-a and base station 105-a of the wireless communication system 200 can support communication for signaling resource allocation for full-duplex time slots allocated for communication at UE 115-a. Specifically, UE 115-a can receive from base station 105-a a configuration (e.g., index, table) for interpreting resource format indicators, which indicate resource formats (e.g., uplink format, downlink format, flexible format, full-duplex format) for time periods (e.g., time slots) of communication resources allocated to UE 115-a. UE 115-a can also receive control messages (e.g., DCI, GC-DCI) from base station 105, wherein the control messages include resource format indicators for one or more time periods. Based on the configuration and resource format indicators, UE 115-a can determine the resource format (e.g., uplink format, downlink format, and full-duplex format) for each time period, and can also determine the frequency resource allocation for each time period including symbols with full-duplex format. Then, UE 115-a can send uplink transmission 220 to base station 105-a based on a defined resource format, a defined frequency resource allocation, or both.

[0073] For example, base station 105-a may send RRC message 210, which includes an indication of the configuration for interpreting a resource format indicator (e.g., SFI) associated with UE 115-a. The resource format indicator may indicate one or more resource formats associated with one or more time periods (e.g., time slots) of communication resources allocated to UE 115-a. For example, the one or more resource formats indicated by the resource format indicator may include a downlink format, an uplink format, or a full-duplex format. In some cases, base station 105-a may send the RRC message 210 including the configuration indication based on UE 115-a's ability to recognize a full-duplex format.

[0074] In addition to or alternatively, the configuration for interpreting the resource format indicator indicated in RRC message 210 may include a time resource allocation scheme and a frequency resource allocation scheme. In this regard, the configuration indicated to UE 115-a may include a configuration for interpreting both the resource format and frequency resource allocation based on the value or storage object indicated in the resource format indicator. In this respect, the configuration for interpreting the resource format indicator may include a joint configuration for determining time and frequency resources.

[0075] In some aspects, UE 115-a can identify the configuration used to interpret the resource format indicator. In some aspects, UE 115-a can identify the configuration used to interpret the resource format indicator based on receiving RRC message 210 from base station 105-a. Alternatively, UE 115-a may be pre-configured with the configuration used to interpret the resource format indicator, and thus can identify the configuration used to interpret the resource format indicator without receiving RRC message 210. In some aspects, UE 115-a can identify the configuration used to interpret the resource format indicator based on UE 115-a's ability to recognize full-duplex formats.

[0076] In some respects, UE 115-a can recognize one or more configurations for interpreting resource format indicators. Specifically, resource format indicators indicating a different number of time slots comprising symbols in full-duplex format can be associated with different configurations. For example, in some cases, UE 115-a can recognize a first configuration and a second configuration, the first configuration being associated with a resource format indicator indicating a single time period (e.g., a single time slot) comprising a set of symbols in full-duplex format, and the second configuration being associated with a resource format indicator indicating two or more time periods (e.g., single time slots) comprising a set of symbols in full-duplex format.

[0077] In some aspects, UE 115-a may receive control message 215 from base station 105-a. Control message 215 may include a resource format indicator (e.g., SFI) for one or more time periods (e.g., time slots) of communication resources allocated to UE 115-a. Control message 215 may include DCI, GC-DCI, etc. For example, the control message may include enhanced DCI (e.g., DCI 2_0, DCI 2_x) for indicating both the resource format (e.g., uplink format, downlink format, full-duplex format) and the frequency resource allocation for time slots including symbols with full-duplex format. In some aspects, at least one time period (e.g., at least one time slot) of one or more time periods allocated to UE 115-a indicated via control message 215 may include: a time period (e.g., a time slot) including symbols with full-duplex format.

[0078] As previously mentioned, not all UEs 115 are compatible with full-duplex communication. Therefore, in some aspects, UEs 115 not configured for full-duplex communication may only receive and monitor "traditional" control messages (e.g., DCI 2_0) that do not indicate full-duplex time slots and / or frequency resource allocations for full-duplex time slots. UEs 115 configured for full-duplex communication may receive and monitor both "traditional" control messages (e.g., DCI 2_0) and "enhanced" control messages (e.g., enhanced DCI 2_0, DCI 2_x) that indicate full-duplex time slots and / or frequency resource allocations for full-duplex time slots. In this respect, UE 115-a may receive control message 215 based on its ability to recognize full-duplex formats. Alternatively, a UE 115 not configured for full-duplex communication may receive an enhancement control message, wherein the resources associated with the UE 115 within the enhancement control message may not include an indication of the allocation of full-duplex time slots and / or frequency resources for full-duplex time slots.

[0079] In some cases, a UE 115 configured to recognize and utilize full-duplex time slots for communication can be referred to as a "full-duplex UE" or "FD UE". In contrast, a UE 115 configured to recognize full-duplex time slots but not configured to utilize them for communication can be referred to as a "full-duplex-aware UE" or "FD-aware UE", while a UE 115 not configured to recognize or utilize full-duplex time slots for communication can be referred to as a "non-full-duplex-aware UE" or "non-FD-aware" UE. In some aspects,

[0080] It should be further noted that configuring each UE 115 to interpret resource format indicators separately allows UE 115s with different complexities or maturity levels (e.g., UE 115s configured and / or not configured for full-duplex communication) to receive and interpret common control messages (e.g., enhanced control messages) and common resource format indicators. For example, some UE 115s may not recognize full-duplex formats (e.g., non-FD-aware UEs) and may not be able to perform communication via full-duplex formats. However, by configuring UE 115s to interpret control messages 215 and / or resource format indicators separately, UE 115s configured for full-duplex communication (e.g., FD UEs) and UE 115s not configured for full-duplex communication (e.g., FD-aware UEs, non-FD-aware UEs) can receive and interpret the same control messages 215 and / or the same resource format indicators. For example, the first UE 115-a can be configured for (e.g., capable of) full-duplex communication (e.g., FD UE), while the second UE 115-b can not be configured for (e.g., unable of) full-duplex communication (e.g., FD-aware UE). In this example, the first UE 115-a can be configured to interpret the resource format indicator "1" as indicating a timeslot with full-duplex format, while the second UE 115-b can be configured to interpret the resource format indicator "1" as a timeslot with uplink format.

[0081] In some respects, UE 115-a can identify one or more indices associated with UE 115-a. One or more indices may include indications of certain portions of the UE 115-a associated with the UE 115-a monitoring control message 215. In some respects, UE 115-a can identify one or more indices based on RRC message 210, control message 215, other signaling from base station 105-a, or any combination thereof. Furthermore, UE 115-b can identify one or more indices based on UE 115-b's ability to recognize full-duplex formats.

[0082] For example, the first few slots or bits of control message 215 may include one or more indexes that indicate the portion of control message 215 that UE 115-a needs to monitor to determine resource allocation. For example, UE 115-a may identify an index associated with UE 115-a within control message 215, where the index indicates the location of a resource format indicator associated with UE 115-a within control message 215.

[0083] In some aspects, UE 115-a may recognize a single index indicating that UE 115-a monitors one or more portions of control message 215. Alternatively, UE 115-a may recognize multiple indices indicating multiple portions of control message 215. For example, in some cases, UE 115-a may recognize a first index within control message 215, where the first index indicates that UE 115-a monitors a first portion of control message 215. Continuing with the same example, UE 115-a may recognize a second index within control message 215, where the second index indicates that UE 115-a monitors a second portion of control message 215, different from the first portion. For example, the first portion of control message 215 indicated by the first index may include a resource format indicator, and the second portion of control message indicated by the second index may include a portion of control message 215 reserved for indicating frequency resource allocation for the resource format indicator contained within control message 215.

[0084] In some respects, UE 115-a can identify an index associated with one or more component carriers associated with UE 115-a. For example, UE 115-a can identify an index for each component carrier in the set of component carriers associated with UE 115-a. In this example, each index can indicate the location of a resource format indicator associated with each corresponding component carrier within control message 215. In this regard, resource format and / or frequency resource allocation for full-duplex time slots can be indicated for each corresponding component carrier of UE 115-a.

[0085] Alternatively, UE 115-a may identify an index for a first component carrier associated with UE 115-a, wherein the index for the first component carrier indicates the location of a resource format indicator associated with one or more component carriers associated with UE 115-a within control message 215. For example, a resource format indicator may be associated with each component carrier associated with UE 115-a. In this regard, the index and / or resource format indicator associated with one component carrier of UE 115-a may be used for additional component carriers of UE 115-a.

[0086] UE 115-a can monitor control message 215 or a portion of control message 215 based on one or more identified indices. For example, if UE 115-a identifies a single index indicating the location of a resource format indicator within control message 215, UE 115-a can monitor the portion of control message 215 that includes the resource format indicator based on the identified index. As another example, if UE 115-a identifies a first index indicating the location of a resource format indicator within control message 215 and a second index indicating a portion of control message 215 reserved for indicating frequency resource allocation, UE 115-a can monitor both the portion of control message 215 that includes the resource format indicator and the portion of control message 215 reserved for indicating frequency resource allocation.

[0087] In some aspects, UE 115-a can determine the resource format (e.g., uplink format, downlink format, full-duplex format) for each time period (e.g., each time slot) of the communication resources allocated to UE 115-a. Furthermore, UE 115-a can determine the resource format associated with each component carrier associated with UE 115-a for each time period of the communication resources allocated to UE 115-a. In this regard, UE 115-a can determine the resource format for each component carrier associated with UE 115-a. In some aspects, UE 115-a can determine the resource format based on RRC message 210, the configuration for interpreting the resource format indicator, control message 215 including the resource format indicator, or any combination thereof. For example, UE 115-a can determine the resource format for each time period based on at least a portion of the resource format indicator within control message 215.

[0088] UE 115-a can additionally identify one or more time periods (e.g., time slots) comprising a set of symbols in a full-duplex format. In this regard, UE 115-a can identify one or more time slots in a full-duplex format. In some aspects, UE 115-a can identify one or more time periods comprising a set of symbols in a full-duplex format based on RRC message 210, configuration for interpreting resource format indicators, control message 215 including resource format indicators, or any combination thereof.

[0089] In some aspects, UE 115-a can monitor the portion of control message 215 associated with the frequency resource allocation of one or more time slots including symbols with full-duplex format. In this regard, UE 115-a can monitor one or more portions of control message 215 based on identifying one or more time slots including symbols with full-duplex format. For example, if UE 115-a identifies one or more time slots including symbols with full-duplex format, UE 115-a can monitor the portion of the resource format indicator and / or the portion of control message 215 reserved for indicating frequency resource allocation. As another example, if UE 115-a does not identify any time slots including symbols with full-duplex format, UE 115-a can avoid monitoring the portion of the resource format indicator and / or the portion of control message 215 reserved for indicating frequency resource allocation.

[0090] In some aspects, UE 115-a can determine frequency resource allocation for one or more time slots that include symbols with full-duplex format. Furthermore, UE 115-a can determine frequency resource allocation for time slots that include symbols with full-duplex format on each component carrier associated with UE 115-a. In some aspects, UE 115-a can determine frequency resource allocation for time slots that include symbols with full-duplex format based on RRC message 210, a configuration for interpreting resource format indicators, control message 215 including resource format indicators, or any combination thereof. For example, where UE 115-a determines the resource format for each time slot based on the first portion (e.g., the first bit) of the resource format indicator, UE 115-a can determine the frequency resource allocation based on the second portion (e.g., the second bit) of the resource format indicator. As another example, UE 115-a can determine the frequency resource allocation based on the portion of control message 215 reserved for indicating the frequency resource allocation for the resource format indicator of control message 215.

[0091] When UE 115-a identifies two or more time slots comprising a set of symbols with full-duplex format, UE 115-a can determine multiple frequency resource allocations. For example, UE 115-a can identify a first time slot comprising a first set of symbols with full-duplex format and a second time slot comprising a second set of symbols with full-duplex format. In this example, UE 115-a can determine the resource format for each time slot based on a first portion (e.g., the first bit) of the resource format indicator, determine a first frequency resource allocation for the first set of symbols with full-duplex format based on a second portion (e.g., the second bit) of the resource format indicator, and determine a second frequency resource allocation for the second set of symbols with full-duplex format based on a third portion (e.g., the third bit) of the resource format indicator. As another example, UE 115-a can determine the frequency resource allocation for both the first and second sets of symbols with full-duplex format based on a portion reserved in control message 215 for indicating frequency resource allocation.

[0092] Furthermore, as previously mentioned, UE 115-a can be configured with multiple configurations for interpreting resource format indicators based on the number of time slots including symbols with full-duplex format. In this regard, when UE 115-a identifies a single full-duplex time slot, UE 115-a can utilize a first configuration to interpret control message 215 and / or resource format indicators, and when UE 115-a identifies two or more full-duplex time slots, it can utilize a second configuration to interpret control message 215 and / or resource format indicators.

[0093] In some respects, UE 115-a can communicate with base station 105-a based on a determined resource format for each time slot and a determined frequency resource allocation for the full-duplex time slot. For example, UE 115-a can send uplink transmission 220 to base station 105-a based on the determined resource format and frequency resource allocation, and can receive downlink transmission 225 from base station 105-a based on the determined resource format and frequency resource allocation.

[0094] The techniques described herein can provide more flexible resource allocation. Specifically, the techniques described herein can support signaling for full-duplex formats, as well as signaling for frequency resource allocation associated with time periods including symbols having full-duplex formats. Furthermore, by sending a single GC-DCI transmission to a group of UEs 115 to indicate resource format indicators (e.g., SFI), base station 105-a can reduce control signaling used to transmit resource format indicators, thereby reducing resource and message transmission overhead within the wireless communication system 200.

[0095] Base station 105-a and UE 115-a can communicate simultaneously in both directions using full-duplex. Two types of full-duplex can be used: Frequency Division Duplex (FDD) and In-Band Full-Duplex. In FDD, downlink (DL) and uplink (UL) transmissions occur simultaneously on different frequency resources. In In-Band Full-Duplex, DL and UL transmissions occur simultaneously on shared frequency resources.

[0096] UE 115-a and / or base station 105-a can employ various techniques to eliminate and / or reduce self-interference to facilitate in-band full-duplex communication. Self-interference occurs when transmissions at a device (e.g., UE 115-a or base station 105-a) interfere with receptions at the device on the same frequency. In one approach, the device can employ self-interference cancellation, wherein the receiver subtracts a known transmitted signal from the signal received at the receiver to eliminate self-interference. In other approaches, self-interference can be reduced by transmitting and receiving signals in different directions, by spacing transmit and receive antennas on the device, etc.

[0097] Figure 3A An example of frequency allocation for FDD is shown in some respects. Figure 3A In the example, a first frequency resource 310 (e.g., a first frequency band) is allocated to DL, and a second frequency resource 312 (e.g., a second frequency band) is allocated to UL. The first frequency resource 310 and the second frequency resource 312 may be separated by a guard band 315, such as... Figure 3A As shown. For example, a guard band 315 can be added to reduce leakage between the first frequency resource 310 and the second frequency resource 312. However, it should be understood that this disclosure is not limited to this example, and the guard band 315 may be omitted in some implementations. For example, for sub-band full-duplex, there may be no guard band or a very small guard band between frequency resources 310 and 312.

[0098] It should be understood that a frequency band can also be referred to as a subband or a portion of a larger frequency band, a channel, bandwidth, or another term. Frequency resources can include frequency bands, one or more carriers (e.g., subcarriers), sets of subcarriers, sets of resource blocks (RBs), where each RB in the set of RBs includes a corresponding set of subcarriers, etc.

[0099] Although Figure 3A In the example, the first frequency resource 310 and the second frequency resource 312 have approximately the same bandwidth, but it should be understood that this is not necessarily the case. For example, depending on, for instance, UL data services and DL data services, the first frequency resource 310 and the second frequency resource 312 may have different bandwidths. In other words, the frequency allocation for UL and DL can be asymmetrical.

[0100] Figure 3BAnother example of frequency allocation for FDD is shown, where the frequency resources allocated to DL and UL are switched relative to the frequency allocation shown in Figure A. In this example, a first frequency resource 320 (e.g., a first frequency band) is allocated to UL, and a second frequency resource 322 (e.g., a second frequency band) is allocated to DL. Figure 3B In the example, the first frequency resource 320 and the second frequency resource 322 are separated by a guard band 325. However, it should be understood that this disclosure is not limited to this example, and the guard band 325 may be omitted in some implementations. For example, for sub-band full-duplex, there may be no guard band or a very small guard band between frequency resources 320 and 322.

[0101] Figure 3C Another example of frequency allocation for FDD based on certain aspects is shown. Figure 3C In the example, a first frequency resource 330 (e.g., a first frequency band) is allocated to UL, a second frequency resource 332 (e.g., a second frequency band) is allocated to DL, and a third frequency resource 335 (e.g., a third frequency band) is allocated to UL. The first frequency resource 330 and the second frequency resource 332 may be separated by a first guard band 340, and the second frequency resource 332 and the third frequency resource 335 may be separated by a second guard band 345, as shown below. Figure 3C As shown. However, it should be understood that this disclosure is not limited to this example, and guard bands 340 and 345 may be omitted in some implementations. For example, for sub-band full-duplex, there may be no guard band or a very small guard band between frequency resources 330, 332, and 335.

[0102] Figure 3D Another example of frequency allocation for FDD is shown in some respects. Figure 3D In the example, a first frequency resource 350 (e.g., a first frequency band) is allocated to DL, a second frequency resource 352 (e.g., a second frequency band) is allocated to UL, and a third frequency resource 355 (e.g., a third frequency band) is allocated to DL. The first frequency resource 350 and the second frequency resource 352 may be separated by a first guard band 360, and the second frequency resource 352 and the third frequency resource 355 may be separated by a second guard band 365, as shown below. Figure 3D As shown. However, it should be understood that this disclosure is not limited to this example, and guard bands 360 and 365 may be omitted in some implementations. For example, for sub-band full-duplex, there may be no guard band or a very small guard band between frequency resources 350, 352, and 355.

[0103] It should be understood that this disclosure is not limited to Figures 3A to 3D The example frequency allocation for FDD is shown.

[0104] Figure 4A An example of frequency allocation for in-band full-duplex is shown, based on certain aspects. Figure 4A In the example, frequency resources 410 (e.g., frequency bands) (i.e., in-band full-duplex) are allocated to both DL and UL. In-band full-duplex improves spectral efficiency by allocating the same frequency resources to both DL and UL.

[0105] Figure 4B Another example of frequency allocation for in-band full-duplex is shown, based on certain aspects. Figure 4B In the example, a first frequency resource 420 (e.g., a first frequency band) (i.e., in-band full-duplex) is allocated to both DL and UL, and a second frequency resource 425 (e.g., a second frequency band) is allocated to DL. Therefore, in this example, DL and UL share the first frequency resource 420. Although in Figure 4B The guard band is not shown, but it should be understood that a guard band may exist between the first frequency resource 420 and the second frequency resource 425.

[0106] Figure 4C Another example of frequency allocation for in-band full-duplex is shown, based on certain aspects. Figure 4C In the example, a first frequency resource 430 (e.g., a first frequency band) is allocated to UL, and a second frequency resource 435 (e.g., a second frequency band) (i.e., in-band full-duplex) is allocated to both UL and DL. Therefore, in this example, DL and UL share the second frequency resource 435. Although in Figure 4C The guard band is not shown, but it should be understood that a guard band may exist between the first frequency resource 430 and the second frequency resource 435.

[0107] Figure 4D Another example of frequency allocation for in-band full-duplex is shown, based on certain aspects. Figure 4D In the example, a first frequency resource 440 (e.g., a first frequency band) is allocated to UL, a second frequency resource 445 (e.g., a second frequency band) (i.e., in-band full-duplex) is allocated to both UL and DL, and a third frequency resource 447 (e.g., a third frequency band) is allocated to DL. Therefore, in this example, DL and UL share the second frequency resource 445. Although in Figure 4D Although the guard band is not shown, it should be understood that a guard band may exist between the first frequency resource 440 and the second frequency resource 445 and / or between the second frequency resource 445 and the third frequency resource 447.

[0108] It should be understood that this disclosure is not limited to Figures 4A to 4D The example frequency allocation shown is for in-band full-duplex.

[0109] Figure 5 An example of a resource allocation scheme 500 that supports resource format indicators for full-duplex resource allocation according to various aspects of this disclosure is shown.

[0110] In some respects, UE 115-a can receive control messages 505 (e.g., downlink control indicators (DCI)) that include one or more resource format indicators 510 (e.g., slot format indicators (SFI)). For examples where the control message includes a DCI, the DCI may include enhanced DCI 2_0, DCI 2_x, etc., such as... Figure 5 As shown in the example, UE 115-a can receive control message 505 (e.g., from base station 105-a), where control message 505 includes a set of resource format indicators 510-A to 510-G for a group of UEs including UE 115-a. In some aspects, UE 115-a can identify a location indicator (e.g., one or more indices) associated with UE 115-a, where the location indicator indicates the location of a resource format indicator (e.g., one of resource format indicators 510-A to 510-G) associated with UE 115-a in control message 505. In some cases, the location indicator can be received via RRC message 210, within a bit field of control message 505, or any combination thereof. For example, in some cases, UE 115-a can identify a location indicator (e.g., an index) in a bit field of control message 505, where the location indicates the location of resource format indicator 510-E associated with UE 115-a. Control message 505 and / or RRC message 210 can be sent from base station 105-a (e.g., gNB) to UE 115-a.

[0111] Resource format indicator 510-E can be associated with one or more time periods (e.g., time slot 525) of communication resources allocated to UE 115-a. For example, as Figure 5 As shown, resource format indicator 510-E can be associated with first time slot 525-a, second time slot 525-b, and third time slot 525-c. Figure 5 In the example, each of time slots 525-a to 525-c includes 14 symbols represented as rectangles. However, it should be understood that time slots 525-a to 525-c are not limited to this example. In some aspects, UE 115-a may monitor resource format indicator 510-E based on the position in control message 505 indicated by the position indicator. Resource format indicator 510-E may include a first portion 515 (e.g., "N bits") and a second portion 520 (e.g., "M bits").

[0112] In some respects, the first portion 515 of the resource format indicator 510-E can indicate the resource format for each slot 525-a to 525-c associated with the resource format indicator 510-E. For example, as Figure 5 As shown, the first portion 515 of the resource format indicator 510-E can indicate the full-duplex format associated with the first time slot 525-a, the downlink format associated with the second time slot 525-b, and the uplink format associated with the third time slot 525-c. In this regard, UE 115-a can determine the resource format for each time period (e.g., each time slot 525) based on the first portion 515 of the resource format indicator 510-E. It is understood that this disclosure is not limited to... Figure 5 The exemplary format shown, and the first part 515 of the resource format indicator 510-E can indicate other combinations of formats for slots 525-a to 525-c, and can indicate formats for different numbers of slots.

[0113] In some respects, UE 115-a can identify time slots including symbols with full-duplex format based on the first part 515 of the resource format indicator 510-E. Figure 5 In the example, the first portion 515 of the resource format indicator 510-E indicates a full-duplex format for time slot 525-a. Therefore, in this example, UE 115-a identifies time slot 525-a as having a full-duplex format based on the first portion 515 of the resource format indicator 510-E. However, it should be understood that this disclosure is not limited to this example. For example, the first portion 515 could indicate a full-duplex format for another time slot and / or a full-duplex format for more than one time slot.

[0114] After identifying time slot 525-a as having a full-duplex format, UE 115-a can monitor the second portion 520 of resource format indicator 510-E to determine a frequency allocation 530 for time slot 525-a. In some aspects, the second portion 520 of resource format indicator 510-E can indicate the frequency allocation 530 for a full-duplex time slot (e.g., time slot 525-a) by indicating one or more frequency formats for the full-duplex time slot. For example, the second portion 520 of resource format indicator 510-E can indicate... Figure 5 One or more of the exemplary frequency formats 535-A to 535-H shown indicate frequency allocation 530 for full-duplex time slots. Each frequency format 535-A to 535-H allocates (i.e., assigns) a communication direction (e.g., UL direction, DL direction, or in-band full-duplex) to each of one or more frequency resources. Note that in Figure 5 In the middle, the frequency is in the vertical direction.

[0115] exist Figure 5 In the examples shown, exemplary frequency formats 535-A to 535-D include: corresponding to Figure 3C The first frequency format 535-A of the exemplary frequency allocation in the example corresponds to Figure 3B The second frequency format 535-B of the exemplary frequency allocation in the example corresponds to Figure 3D The exemplary frequency allocation in the third frequency format 535-C, and corresponding to Figure 3A The exemplary frequency allocation in this example uses a fourth frequency format, 535-D. In this example, each frequency format indicates one or more frequency resources (e.g., one or more frequency bands) and the communication direction for each frequency resource (e.g., frequency band). Figure 5 In the diagram, the UL direction is labeled "U," and the DL direction is labeled "D." The DL direction is from the base station (e.g., base station 105-a) to UE 115-a, and the UL direction is from UE 115-a to the base station (e.g., base station 105-a). Although in Figure 5 The example illustrates guard bands used to separate frequency resources, but it should be understood that this disclosure is not limited to this example. For example, for sub-band full-duplex, there may be no guard band or a very small guard band between frequency resources.

[0116] To support in-band full-duplex communication, exemplary frequency formats 535-E to 535-H include: corresponding to Figure 4A The fifth frequency format 535-E, which is an exemplary frequency allocation in the example, corresponds to Figure 4B The sixth frequency format 535-F of the exemplary frequency allocation in the example corresponds to Figure 4C The seventh frequency format 535-G of the exemplary frequency allocation in the example, and corresponding to Figure 4D The exemplary frequency allocation in this example uses the eighth frequency format 535-H. In this example, each frequency format indicates one or more frequency resources (e.g., frequency bands) and the communication direction for each frequency resource (e.g., frequency band). Figure 5 In this context, the in-band full-duplex directions are labeled "U" and "D". It's important to understand that frequency allocation 530 is not limited to... Figure 5 The exemplary frequency format shown is illustrated.

[0117] In some aspects, each of the exemplary frequency formats 535-A to 535-H can be identified by a corresponding format index, and the second portion 520 of the resource format indicator 510-E can indicate one of the frequency formats by including the corresponding format index. Therefore, in this example, UE 115-a can determine the frequency allocation 530 for time slot 525-a by determining the frequency format (e.g., one of frequency formats 535-A to 535-H) corresponding to the format index in the second portion 520 of the resource format indicator 510-E.

[0118] For an example where the second part 520 indicates one of the exemplary frequency formats 535-A to 535-H for a full-duplex time slot (e.g., time slot 525-a), UE 115-a can use the indicated frequency format for each symbol in the full-duplex time slot. For example, where the first part 515 of the resource format indicator 510-E indicates two or more full-duplex time slots, UE 115-a can use the indicated frequency format for each symbol in each full-duplex time slot.

[0119] In one example, the first portion 515 of the resource format indicator 510-E may indicate two or more full-duplex time slots. In this example, the second portion 520 may indicate two or more frequency formats, where each indicated frequency format corresponds to a corresponding full-duplex time slot among the full-duplex time slots indicated in the first portion 515. In this example, UE 115-a may determine two or more full-duplex time slots based on the first portion 515 of the resource format indicator 510-E. For each full-duplex time slot determined, UE 115-a may use the corresponding frequency format indicated for that time slot in the second portion 520 of the resource format indicator 510-E.

[0120] Figure 6 Another example of a resource allocation scheme 600 supporting resource format indicators for full-duplex resource allocation according to various aspects of this disclosure is shown. Compared to resource allocation scheme 500, which indicates both resource format and frequency allocation via portions of resource format indicators 510-E, resource allocation scheme 600 can indicate frequency allocation via a reserved portion 615 of a control message 505 (e.g., DCI), the reserved portion 615 being reserved for indicating frequency allocation for the set of resource format indicators 510 in the control message 505. In this respect, resource allocation scheme 600 can indicate resource format via resource format indicators 510 and can indicate frequency allocation for full-duplex time slot 525 via the reserved portion 615.

[0121] In this example, when UE 115-a identifies a full-duplex time slot (e.g., time slot 525-a) associated with UE 115-a based on resource format indicator 510-E, UE 115-a monitors reservation portion 615 for frequency allocation of the full-duplex time slot. Reservation portion 615 can indicate frequency allocation 530 for the full-duplex time slot by indicating one of exemplary frequency formats 535-A to 535-H. UE 115-a can then determine the frequency allocation 530 for the full-duplex time slot based on the frequency format indicated in reservation portion 615.

[0122] As described above, control message 505 can allocate frequency resources for in-band full-duplex communication in a full-duplex time slot (e.g., time slot 525-a) by indicating an in-band full-duplex frequency format (e.g., one of exemplary frequency formats 535-E to 535-H). As described above, the frequency format can be indicated in the second part 520 or the reserved part 615 of the resource format indicator 510-E.

[0123] In some aspects, control message 505 can indicate frequency allocation for in-band full-duplex communication in a full-duplex time slot by indicating two frequency formats for that time slot (e.g., time slot 525-a). In this example, UE 115-a can determine the frequency allocation for the full-duplex time slot by combining the two frequency formats to obtain a new frequency format as follows: For frequency resources (e.g., frequency bands) where both frequency formats indicate the UL direction, UE 115-a assigns the UL direction to the frequency resource (e.g., frequency band). For frequency resources (e.g., frequency bands) where both frequency formats indicate the DL direction, UE 115-a assigns the DL direction to the frequency resource (e.g., frequency band). For frequency resources (e.g., frequency bands) where one frequency format indicates the UL direction and the other frequency format indicates the DL direction, UE 115-a assigns the in-band full-duplex direction (i.e., both the UL and DL directions) to the frequency resource (e.g., frequency band). In other words, UE 115-a assigns in-band duplex directions to frequency resources (e.g., frequency bands), where the UL direction in one frequency format overlaps with the DL direction in another frequency format.

[0124] Examples of the above methods are as follows: Figure 7As shown. In this example, control message 505 (e.g., in the second part 520 or reserved part 615 of resource format indicator 510-E) indicates exemplary frequency formats 535-A and 535-B for full-duplex time slot 525-a. In this example, UE 115-a can combine frequency formats 535-A and 535-B to obtain a new frequency format 710 for full-duplex time slot 525-a, as shown below. UE 115-a assigns the UL direction to a first frequency resource 730 (e.g., a frequency band), where both frequency formats 535-A and 535-B indicate the UL direction. UE 115-a assigns the in-band full-duplex direction to a second frequency resource 732 (e.g., a frequency band), where frequency format 535-A indicates the DL direction and frequency format 535-B indicates the UL direction. The second frequency resource 732 is a frequency resource (e.g., a frequency band) where the DL direction in frequency format 535-A overlaps with the UL direction in frequency format 535-B in the frequency domain. UE 115-a assigns the DL direction to the third frequency resource 734 (e.g., a frequency band), where both frequency formats 535-A and 535-B indicate the DL direction. UE 115-a assigns the in-band full-duplex direction to the fourth frequency resource 736 (e.g., a frequency band), where frequency format 535-A indicates the UL direction and frequency format 535-B indicates the DL direction. The fourth frequency resource 736 is a frequency resource (e.g., a frequency band) where the UL direction in frequency format 535-A overlaps with the DL direction in frequency format 535-B in the frequency domain.

[0125] Therefore, in Figure 7 In the example shown, UE 115-a combines two frequency formats, 535-A and 535-B, to obtain a new frequency format 710. UE 115-a uses the new frequency format 710 to determine the frequency allocation for a full-duplex time slot (e.g., 525-a). In this example, frequency formats 535-A and 535-B are FDD frequency formats. Therefore, UE 115-a can combine two FDD frequency formats to obtain a new in-band full-duplex frequency format for a full-duplex time slot (e.g., time slot 525-a).

[0126] Base station 105-a (e.g., gNB) and UE 115-a in wireless communication system 100 or 200 (e.g., NR system) can communicate with each other in a spectrum (e.g., unlicensed spectrum) shared with devices in another wireless system (e.g., WiFi system). For example, wireless communication system 100 or 200 can be an NR wireless system coexisting with a WiFi wireless system in the 5 GHz and 6 GHz frequency bands. To avoid interfering with devices in the other wireless system, base station 105-a can sense the spectrum (e.g., during a Listen-Before-Speak (LBT) process) to determine which portions of the spectrum (e.g., frequency bands within the spectrum) are available (e.g., unoccupied). Base station 105-a can then send a control message (e.g., control message 505) to UE 115-a to indicate one or more available portions of the spectrum. Base station 105-a and UE 115-a can then communicate with each other using one or more available portions of the spectrum.

[0127] In some respects, wireless communication systems 100 or 200 may share frequency resources with other wireless systems (e.g., WiFi systems) in the spectrum (e.g., unlicensed spectrum). Each frequency resource may also be referred to as a cell, channel, subband, LBT bandwidth, or another term. Figure 8 Examples of frequency resources 810-A to 810-D (e.g., frequency bands) that can be shared by wireless systems are shown. It should be understood that this disclosure is not limited to... Figure 8 The examples shown in the document illustrate the number of frequency resources 810-A to 810-D. In one example, each frequency resource may be approximately 20 MHz (e.g., for a WiFi system). However, it should be understood that this disclosure is not limited to this example.

[0128] To avoid interfering with devices in other wireless systems, base station 105-a can sense the shared spectrum to determine which frequency resources 810-A to 810-D (e.g., frequency bands) are available (e.g., unoccupied). In this regard, base station 105-a can use one or more antennas to detect the energy in each of the resources 810-A to 810-D (e.g., LBT bandwidth). For each frequency resource, base station 105-a can compare the detected energy for the frequency resource with a threshold (e.g., an energy detection (ED) threshold). If the detected energy for the frequency resource is equal to or higher than the threshold, base station 105-a can determine that the frequency resource is unavailable (e.g., occupied). If the detected energy for the frequency resource is lower than the threshold, base station 105-a can determine that the frequency resource is available (e.g., unoccupied). After determining the available frequency resources (e.g., LBT bandwidth), base station 105-a can send a control message (e.g., control message 505) to UE 115-a to indicate the available frequency resources.

[0129] In some respects, base station 105-a and UE 115-a can communicate with each other using resource block (RB) sets, where each RB set corresponds to one of frequency resources 810-a to 810-d. In this regard, Figure 9 Examples of RB sets 910-A to 910-D, labeled RB sets 0 to RB set 3, are shown. Each of RB sets 910-A to 910-D corresponds to a corresponding frequency resource 810-A to 810-D. For example, RB set 910-A corresponds to frequency resource 810-A, RB set 910-B corresponds to frequency resource 810-B, and so on. Each RB in the RB set may include a set of subcarriers (e.g., 12 subcarriers). In some examples, each of RB sets 910-A to 910-D may include 100 or more RBs. RB sets 910-A to 910-D can be considered as frequency resources respectively corresponding to frequency resources 810-A to 810-D.

[0130] exist Figure 9 In the example, RB sets 910-A to 910-D are separated by guard bands. More specifically, RB sets 910-A and 910-B are separated by guard band 915, RB sets 910-B and 910-C are separated by guard band 920, and RB sets 910-C and 910-D are separated by guard band 930. The guard bands separating the RB sets may be referred to as intra-cell guard bands. It should be understood that in some cases, the size of the guard band can be zero. For example, for sub-band full-duplex, there may be no guard band or a very small guard band between RB sets 910-A and 910-D. In this example, a very small guard band could be a guard band with a width of 10 or fewer RBs.

[0131] In this example, base station 105-a can indicate available frequency resources in a control message (e.g., control message 505) by indicating the corresponding RB sets as available frequency resources. For example, if base station 105-a determines that frequency resources 810-A, 810-B, and 810-D are available and frequency resource 810-C is unavailable (e.g., occupied), then base station 105 can indicate to UE 115-a in the control message that RB sets 910-A, 910-B, and 910-D are available and RB set 910-C is unavailable.

[0132] As described above, after determining the available frequency resources (e.g., LBT bandwidth), base station 105-a can send a control message (e.g., control message 505) to UE 115-a to indicate the available frequency resources (e.g., frequency bands). In some aspects, control message 505 may include an availability bitmap for indicating the available frequency resources (e.g., LBT bandwidth). For example, the bitmap may include bits for each frequency resource, where the logical value of the bit indicates whether the corresponding frequency resource is available (e.g., unoccupied) or unavailable (e.g., occupied). For example, a logical value of 1 may indicate that the corresponding frequency resource is available, and a logical value of 0 may indicate that the corresponding frequency resource is unavailable.

[0133] In some aspects, base station 105-a may include a duration indicator (e.g., channel occupancy time (COT) duration) in control message 505, which indicates the duration for which the available frequency resources indicated in the control message will be used. In one example, the duration indicator may indicate the remaining length of time for the available frequency resources starting from the time slot for receiving information. The interpretation of the duration indicator may be configured by RRC message 210.

[0134] In some aspects, base station 105-a may omit the duration indicator in control message 505. In these aspects, UE 115-a may determine the duration based on resource format indicator 510-E (e.g., SFI). For example, UE 115-a may assume that the duration for available frequency resources is the same as the duration of time slots 525-a to 525-c associated with resource format indicator 510-E.

[0135] Therefore, base station 105-a can indicate the available frequency resources and the duration for the available frequency resources in control message 505 (e.g., enhanced DCI 2_0, DCI 2_x).

[0136] However, currently, control message 505 does not indicate the communication direction for each available frequency resource. More specifically, control message 505 does not indicate whether the available frequency resource is used for DL ​​communication, UL communication, or in-band full-duplex communication. Therefore, currently, control message 505 does not provide information about the communication direction used to facilitate full-duplex communication on the available frequency resources.

[0137] In some aspects, base station 105-a transmits base station 105-a direction information, which indicates the communication direction (e.g., UL, DL, or in-band full-duplex) for each of frequency resources 810-A to 810-D. Base station 105-a may include the direction information in control message 505 (e.g., enhanced DCI 2_0, DCI 2_x) or another message. For example, control message 505 may include an indication of available frequency resources (e.g., available RB sets), a duration indicator for indicating the duration for the available frequency resources, and direction information for the available frequency resources. For an example where each frequency resource 810-A to 810-D corresponds to one of RB sets 910-A to 910-D, control message 505 may indicate the available RB sets 910-A to 910-D.

[0138] Upon receiving control message 505, UE 115-a can determine the available frequency resources based on an indication of available frequency resources, determine the duration for the available frequency resources based on a duration indicator, and determine the communication direction for each available frequency resource based on direction information. Then, UE 115-a can communicate with base station 105-a using available frequency resources 810-A to 810-D during the duration, based on the communication direction indicated by the direction information.

[0139] In some respects, direction information can indicate the communication direction (e.g., DL, UL, or in-band full-duplex) for each frequency resource 810-A to 810-D. Based on the direction information, UE 115-a can determine the communication direction for each available frequency resource. Figure 10 An example is shown where each frequency resource 810-A to 810-D corresponds to one of the RB sets 910-A to 910-D. In this example, control message 505 uses an availability bitmap to indicate available frequency resources, where each bit in the bitmap indicates whether the corresponding frequency resource (e.g., RB set) is available. In this example, the availability bitmap could be

[1101] , which indicates that frequency resources 810-A, 810-B, and 810-D (RB sets 910-A, 910-B, and 910-D) are available, and frequency resource 810-C (RB set 910-C) is unavailable. Furthermore, in this example, direction information could include a set of indicators (e.g., values), where each indicator indicates the direction of a corresponding frequency resource. Figure 10In the example, the direction information could be [DL UL UL DL], indicating that the direction for frequency resource 810-A (RB set 910-A) is the DL direction, the direction for frequency resource 810-B (RB set 910-B) is the UL direction, the direction for frequency resource 810-C (RB set 910-C) is the UL direction, and the direction for frequency resource 810-D (RB set 910-D) is the DL direction. Since frequency resource 810-C (RB set 910-C) is unavailable in this example, UE 115-a can ignore the direction for frequency resource 810-C (RB set 910-C).

[0140] exist Figure 10 In the example shown, the direction information has the same granularity as frequency resources 810-A to 810-D (RB sets 910-A to 910-D). However, it should be understood that this is not necessary. For example, each frequency resource may include two or more parts in the frequency domain. In this example, for each frequency resource, the direction information may indicate the communication direction for each part of the frequency resource. Parts for each frequency resource may have the same bandwidth or different bandwidths. In the example where each frequency resource corresponds to an RB set, each part of the frequency resource may include one or more corresponding RBs in the RB set. In this example, the direction information has a smaller granularity than that for frequency resources 810-A to 810-D (RB sets 910-A to 910-D).

[0141] Directional information can also have a larger granularity than that of frequency resources 810-A to 810-D (RB sets 910-A to 910-D). For example, frequency resources 810-A to 810-D (RB sets 910-A to 910-d) can be grouped into groups (e.g., two groups). In this example, directional information can indicate the direction of communication for each group of frequency resources (RB sets).

[0142] In some respects, the granularity of the direction information can be configurable. For example, base station 105-a can configure the granularity of the direction information by including a granularity indicator in RRC message 210, control message 505, or another message to UE 115-a, where the granularity indicator indicates the granularity of the direction information. UE 115-a can then use the granularity indicator to determine the granularity of the direction information.

[0143] In some respects, UE 115-a can use the frequency format indicated in control message 505 to determine the communication direction for available frequency resources. As described above, UE 115-a can determine the frequency format from the second part 520 or reserved part 615 of resource format indicator 510-E. The frequency format can be used to determine the communication direction for available frequency resources because the frequency format carries direction information. More specifically, the frequency format indicates one or more frequency resources and the communication direction (e.g., UL, DL, or in-band full-duplex) for each frequency resource. Examples of frequency formats that include direction information include... Figure 5 The exemplary frequency formats shown are 535-A to 535-H. (Refer to the above reference.) Figure 7 As discussed, UE 115-a can also combine two frequency formats to obtain new frequency formats. In these aspects, the frequency format can be considered as directional information, because in these aspects, the frequency format is used to determine the direction of communication toward available resources.

[0144] UE 115-a can determine the communication direction for available frequency resources by mapping the communication direction of the frequency format to available frequency resources in the frequency domain. The frequency format may include one of the resource format indicators 510-A to 510-G, a new frequency format obtained by combining frequency formats, or another frequency format.

[0145] In some respects, UE 115-a can map communication directions in a frequency format to available frequency resources in the frequency domain, such that a communication direction is mapped to each available frequency resource. Reference is made below to various aspects of this disclosure. Figure 11 The example shown illustrates an example of this method. Figure 11 In the example, frequency format 535-A is used. However, it should be understood that another frequency format may be used (e.g., depending on the frequency format indicated in the second part 520 or reserved part 615 of the resource format indicator 510-E). See above for reference. Figure 5 The frequency format discussed assigns (i.e., assigns) a communication direction (e.g., UL direction, DL direction, or in-band full-duplex) to each of one or more frequency resources. Note that in Figure 11 In the middle, the frequency is in the vertical direction.

[0146] In this method, UE 115-a compares the available frequency resources (RB set) with the communication direction in the frequency format in the frequency domain. Figure 11In the example, the available frequency resources are frequency resources 810-A, 810-B, and 810-D (RB set 910-A, 910-B, and 910-D). In this method, if an available frequency resource falls entirely within a communication direction in the frequency domain, UE 115-a assigns that communication direction to the available frequency resource. For example, in Figure 11 In the example, available frequency resource 810-A (RB set 910-A) falls entirely within the UL direction in frequency format 535-A in the frequency domain. Therefore, UE115-a assigns the UL direction to frequency resource 810-A (RB set 910-A), as follows. Figure 11 As shown. Similarly, in Figure 11 In the example, available frequency resource 810-D (RB set 910-D) falls entirely within the UL direction in frequency format 535-A in the frequency domain. Therefore, UE 115-a assigns the UL direction to frequency resource 810-D (RB set 910-D), as follows. Figure 11 As shown.

[0147] If available frequency resources overlap in different directions in the frequency domain with those in the frequency format, UE 115-a can assign the available frequency resources to the direction that overlaps most with the available frequency resources in the frequency domain. Figure 11 In the example, available frequency resource 810-B (RB set 910-B) overlaps with the UL and DL directions in frequency format 535-A in the frequency domain. This is because the frequency is... Figure 11 In the vertical direction, therefore the overlap in the frequency domain is... Figure 11 The overlap is shown in the vertical direction. In this example, available frequency resource 810-B (RB set 910-B) overlaps more with the DL direction than with the UL direction in the frequency domain. For example, the overlap between available frequency resource 810-B (RB set 910-B) and the DL direction can be approximately 15 MHz, and the overlap between available frequency resource 810-B (RB set 910-B) and the UL direction can be approximately 5 MHz. Because available frequency resource 810-B (RB set 910-B) overlaps more with the DL direction in the frequency domain, UE 115-a assigns the DL direction to available frequency resource 810-B (RB set 910-B).

[0148] exist Figure 11 In the example, the direction is not assigned to frequency resource 810-C (RB set 910-C), which is not available in this example.

[0149] If available frequency resources overlap equally with two directions, UE 115-a can assign either direction to the available frequency resources. For example, RRC message 210 may include an indicator that tells UE 115-a how to handle cases where available frequency resources overlap equally with both the UL and DL directions. If the indicator indicates the UL direction, UE 115-a can assign the UL direction to available frequency resources that overlap equally with both the UL and DL directions. If the indicator indicates the DL direction, UE 115-a can assign the DL direction to available frequency resources that overlap equally with both the UL and DL directions. Therefore, the way UE 115-a handles cases where available frequency resources overlap equally with both the UL and DL directions can be configured (e.g., via RRC message 210).

[0150] While the above examples using the UL and DL directions have discussed the methods, it should be understood that these methods can also be applied to in-band full-duplex directions. For example, if an available frequency resource falls entirely within an in-band full-duplex direction in the frequency domain (e.g., frequency format 535-E), UE 115-a can assign an in-band full-duplex direction to the available frequency resource. In another example, if an available frequency resource overlaps with both the in-band full-duplex and UL directions in the frequency domain (e.g., frequency formats 535-G or 535-H), with greater overlap with the in-band full-duplex direction, UE 115-a can assign an in-band full-duplex direction to the available frequency resource.

[0151] In some respects, UE 115-a can map the communication direction in the frequency format to available frequency resources in the frequency domain, such that the communication direction for the available frequency resources matches the communication direction in the frequency format in the frequency domain. Reference is made below to various aspects of this disclosure. Figure 12 The example shown illustrates an example of this method. Figure 12 In the example, frequency format 535-A is used. However, it should be understood that another frequency format may be used (e.g., depending on the frequency format indicated in the second part 520 or reserved part 615 of the resource format indicator 510-E). See above for reference. Figure 5 The frequency format discussed assigns (i.e., assigns) a communication direction (e.g., UL direction, DL direction, or in-band full-duplex) to each of one or more frequency resources. Note that in Figure 12 In the middle, the frequency is in the vertical direction.

[0152] In this method, UE 115-a matches the communication direction in the available frequency resources (RB set) with the communication direction in the frequency format in the frequency domain. Figure 12In the example, the available frequency resources are frequency resources 810-A, 810-B, and 810-D (RB set 910-A, 910-B, and 910-D). In this method, if the available frequency resources fall completely within a direction of the frequency format in the frequency domain, UE 115-a assigns that direction to the available frequency resources, such as... Figure 12 The example is shown in the image.

[0153] If available frequency resources overlap with different directions in the frequency format in the frequency domain, UE 115-a can assign different directions to different portions of the available frequency resources, such that the directions in the available frequency resources match the directions in the frequency format in the frequency domain. Figure 12 In the example, available frequency resource 810-B (RB set 910-B) overlaps with the UL and DL directions in frequency format 535-A in the frequency domain. In this example, UE 115-a assigns the UL direction to the first portion 1210 of frequency resource 810-B (RB set 910-B) and assigns the DL direction to the second portion 1220 of frequency resource 810-B (RB set 910-B), such that the UL and DL directions in frequency resource 810-B match the UL and DL directions in frequency format 535-A in the frequency domain.

[0154] Figure 13 Example device 1300 according to certain aspects of this disclosure is shown. Device 1300 can be configured to operate in a base station (e.g., base station 105-a) or UE (e.g., UE 115-a) and can be configured to perform one or more operations described herein. Device 1300 may include processor 1320, memory 1310, transceiver 1330, one or more antennas 1370-1 to 1370-n, and user interface 1340. These components can communicate electronically via one or more buses 1345.

[0155] Memory 1310 may store instructions 1315 executable by processor 1320 to cause device 1300 to perform one or more operations described herein. Processor 1320 may include a general-purpose processor, digital signal processor (DSP), central processing unit (CPU), microcontroller, application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), programmable logic device, discrete gate or transistor logic component, discrete hardware component, or any combination thereof. Memory 1310 may include, for example, random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), register, disk, optical disk, hard disk drive, or any other suitable storage medium, or any combination thereof.

[0156] Transceiver 1330 is coupled to one or more antennas 1370-1 to 1370-n and can be configured to transmit and receive signals via one or more antennas 1370-1 to 1370-n. Transceiver 1330 includes receiver 1332 and transmitter 1334. Receiver 1332 is configured to receive signals via one or more antennas 1370-1 to 1370-n. In some aspects, receiver 1332 can receive RF signals including information (e.g., control messages) and / or data. Receiver 1332 can then down-convert the received RF signals to baseband signals and demodulate the baseband signals to recover the information and / or data. Receiver 1332 can transmit the recovered information and / or data to processor 1320 via one or more buses 1345 for further processing. For an example of a UE (e.g., UE 115-a), the information may include control message 505, and processor 1320 may determine the available frequency resources and the communication direction for the available frequency resources based on the received information.

[0157] Transmitter 1334 is configured to transmit signals via one or more antennas 1370-1 to 1370-n. In some aspects, transmitter 1334 is configured to receive information (e.g., control messages) and / or data from processor 1320 via one or more buses 1345, modularize and upconvert the information and / or data into RF signals, and transmit the RF signals via one or more antennas 1370-1 to 1370-n.

[0158] For an example of a UE (e.g., UE 115-a), receiver 1332 receives signals in the DL direction via one or more antennas 1370-1 to 1370-n, and transmitter 1334 transmits signals in the UL direction via one or more antennas 1370-1 to 1370-n. For an example of a base station (e.g., base station 105-a), receiver 1332 receives signals in the UL direction via one or more antennas 1370-1 to 1370-n, and transmitter 1334 transmits signals in the DL direction via one or more antennas 1370-1 to 1370-n.

[0159] In some respects, transmitter 1334 and receiver 1332 can simultaneously transmit and receive signals using the same frequency resources for in-band full-duplex operation. To facilitate in-band full-duplex operation, receiver 1332 employs self-interference cancellation, wherein receiver 1332 subtracts the known transmitted signal from transmitter 1334 from the signal received at receiver 1332 to eliminate self-interference. Transmitter 1334 and receiver 1332 can also reduce self-interference by transmitting and receiving signals in different directions and / or via different antennas among antennas 1370-1 to 1370-n.

[0160] In the case of a UE (e.g., UE 115-a), device 1300 may include a user interface 1340 coupled to processor 1320. User interface 1340 may be configured to receive data from a user (e.g., via a keyboard, mouse, etc.) and provide the data to processor 1320. User interface 1340 may also be configured to output data from processor 1320 to the user (e.g., via a display, speaker, etc.). In this case, the data may undergo additional processing before being output to the user. In the case of a base station (e.g., base station 105-a), user interface 1340 may be omitted.

[0161] Figure 14 An example of a method 1400 for wireless communication at a UE (e.g., 115-a) is shown. For an example of implementing the UE with device 1300, method 1400 can be performed by device 1300.

[0162] At block 1410, an indication of available frequency resources is received. For example, the indication of available frequency resources may be received by receiver 1332 (e.g., via one or more antennas 1370-1 to 1370-n). Each available frequency resource may include a corresponding frequency band, a corresponding set of resource blocks, a corresponding subcarrier, etc. For example, where each available frequency resource includes a corresponding set of resource blocks (e.g., RB sets 910-A to 910-D), each resource block in the set of resource blocks may include a set of subcarriers (e.g., 12 subcarriers). In some aspects, available frequency resources may be separated by one or more guard bands. In some aspects, there may be no guard band or a very small guard band between frequency resources.

[0163] At box 1420, direction information is received. For example, the direction information may be received by receiver 1332 (e.g., via one or more antennas from antennas 1370-1 to 1370-n). In one example, the direction information may include indicators, each of which indicates a communication direction for a corresponding available frequency resource among the available frequency resources. In this example, each indicator may indicate an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction for a corresponding available frequency resource among the available frequency resources. In one example, the direction information may include an indicator of a frequency format (e.g., one of frequency formats 535-A to 535-H). In this example, the frequency format indicator may be received in a resource format indicator (e.g., resource format indicator 510-E) or in reserved portion 615 of a control message (e.g., control message 505). In some aspects, the indication of available frequency resources and the direction information may be received in a control message (e.g., control message 505).

[0164] At block 1430, one or more communication directions are determined for each available frequency resource based on direction information. For example, this determination may be performed by processor 1320. For an example where the direction information includes an indication of a frequency format, processor 1320 can determine one or more communication directions for each available frequency resource by mapping the communication directions in the indicated frequency format to available frequency resources in the frequency domain.

[0165] At box 1440, the UE communicates with the base station using available frequency resources based on one or more communication directions determined for each available frequency resource. For example, communication may be performed by receiver 1332 and / or transmitter 1334. For instance, if the communication direction determined for the frequency resource is the DL direction, the UE (e.g., 115-a) can use receiver 1332 to receive data from the base station (e.g., base station 105-a) on the frequency resource. If the communication direction determined for the frequency resource is the UL direction, the UE (e.g., 115-a) can use transmitter 1334 to send data to the base station (e.g., base station 105-a) on the frequency resource. If the communication direction determined for the frequency resource is an in-band full-duplex direction, the UE (e.g., 115-a) can use receiver 1332 and transmitter 1334 to receive data from the base station (e.g., base station 105-a) and send data to the base station on the frequency resource.

[0166] In some aspects, method 1400 may optionally include receiving a channel occupancy time (COT) duration, wherein communicating with the base station using available frequency resources includes communicating with the base station using available frequency resources during the COT duration. In some aspects, the COT duration may be received in a control message (e.g., control message 505).

[0167] In some aspects, determining one or more communication directions for each available frequency resource based on direction information may include: mapping communication directions in an indicated frequency format to available frequency resources in the frequency domain. In some aspects, mapping communication directions in an indicated frequency format to available frequency resources in the frequency domain may include: assigning a communication direction to an available frequency resource if one of the available frequency resources falls completely within a communication direction in the frequency format in the frequency domain. In some aspects, mapping communication directions in an indicated frequency format to available frequency resources in the frequency domain may include: if one of the available frequency resources overlaps with a first communication direction and a second communication direction in the frequency format in the frequency domain, determining which of the first and second communication directions has the greatest overlap with one of the available frequency resources in the frequency domain, and assigning the communication direction determined in the first and second communication directions to one of the available frequency resources. In some aspects, mapping the communication direction in the indicated frequency format to available frequency resources in the frequency domain may include assigning the first communication direction in the communication direction to a first portion (e.g., first portion 1210) of the available frequency resources and assigning the second communication direction in the communication direction to a second portion (e.g., second portion 1220) of the available frequency resources if one of the available frequency resources overlaps with a first communication direction and a second communication direction in the communication direction in the frequency format in the frequency domain.

[0168] Figure 15 An example of a method 1500 for wireless communication at a base station (e.g., 105-a) is shown. For an example of implementing a base station using device 1300, method 1500 can be performed by device 1300.

[0169] At block 1510, an available frequency resource is determined from a plurality of frequency resources. For example, the available frequency resource can be determined by receiver 1332 and processor 1320. For example, the available frequency resource can be determined by: detecting the energy for each of the plurality of frequency resources (e.g., frequency resources 810-A to 810-D, RB sets 910-A to 910-D, etc.), comparing the detected energy for each of the plurality of frequency resources with a threshold (e.g., an energy detection (ED) threshold), and determining the available frequency resource based on the comparison. Energy detection can be performed by receiver 1332, and the comparison and determination can be performed by processor 1320. In some aspects, if the corresponding detected energy is below the threshold, the processor can determine that the frequency resource is available, and if the corresponding detected energy is above the threshold, the frequency resource is determined to be unavailable.

[0170] At box 1520, an indication of available frequency resources is generated. For example, processor 1320 may generate an indication of available frequency resources.

[0171] At box 1530, indication and direction information of available frequency resources is sent to the user equipment (UE). For example, transmitter 1334 may send indication and direction information of available frequency resources. In some aspects, indication and direction information of available frequency resources is sent in a control message (e.g., control message 505).

[0172] At box 1540, the base station communicates with the UE using available frequency resources based on direction information. For example, if the direction information indicates a DL direction for the frequency resource, the base station (e.g., base station 105-a) can use transmitter 1334 to transmit data to the UE (e.g., UE 115-a) on the frequency resource. If the direction information indicates a UL direction for the frequency resource, the base station (e.g., 105-a) can use receiver 1332 to receive data from the UE (e.g., UE 115-a) on the frequency resource. If the direction information indicates in-band full-duplex for the frequency resource, the base station (e.g., 105-a) can use receiver 1332 and transmitter 1334 to receive and transmit data to the UE (e.g., UE 115-a) on the frequency resource.

[0173] In some aspects, each available frequency resource includes a corresponding frequency band. In other aspects, each available frequency resource includes a corresponding set of resource blocks. Each resource block in the set of resource blocks may include a set of subcarriers.

[0174] In some aspects, method 1500 may further include sending the COT duration to the UE, wherein communicating with the UE using available frequency resources includes: communicating with the UE using available frequency resources during the COT duration. For example, transmitter 1334 may send the COT duration.

[0175] In some respects, the direction information includes indicators, each of which indicates the direction of communication for a corresponding available frequency resource among the available frequency resources.

[0176] In some respects, each available frequency resource comprises two or more parts, and the direction information includes indicators, each of which indicates the direction of communication for a corresponding part of the two or more parts of a corresponding available frequency in the available frequency resource.

[0177] In some aspects, the direction information includes an indicator for indicating the frequency format (e.g., one of frequency formats 535-A to 535-H). In some aspects, the indicator for the frequency format is in a resource format indicator (e.g., resource format indicator 510-E) within a control message (e.g., control message 505). In some aspects, the resource format indicator includes a time slot format indicator.

[0178] Method 1500 may optionally include generating a location indicator that indicates the location of a resource format indicator in a control message, and sending the location indicator to the UE. For example, processor 1320 may generate the location indicator, and transmitter 1334 may send the location indicator (e.g., in RRC message 210, control message 505 (e.g., DCI), etc.).

[0179] Examples of implementation methods are described in the following numbered clauses:

[0180] 1. A method for conducting wireless communication at a user equipment (UE), comprising:

[0181] Receive indications of available frequency resources;

[0182] Receive direction information;

[0183] Based on the direction information, one or more communication directions are determined for each available frequency resource in the available frequency resources; and

[0184] Based on one or more communication directions determined for each of the available frequency resources, the available frequency resources are used to communicate with the base station.

[0185] 2. The method as described in Clause 1, wherein the indication of available frequency resources and the direction information are received in a control message.

[0186] 3. The method as described in Clause 2, wherein the control message includes downlink control information.

[0187] 4. The method of any one of Clauses 1 to 3, wherein each available frequency resource comprises a corresponding frequency band.

[0188] 5. The method of any one of Clauses 1 to 4, wherein each available frequency resource comprises a corresponding set of resource blocks.

[0189] 6. The method as described in Clause 5, wherein for each available frequency resource, each resource block in the corresponding resource block set includes a corresponding subcarrier set.

[0190] 7. The method of any one of Clauses 1 to 6, wherein each available frequency resource in the available frequency resources includes a corresponding subcarrier.

[0191] 8. The method of any one of Clauses 1 to 7 further includes a Channel Occupied Time (COT) duration, wherein communicating with the base station using the available frequency resources includes: communicating with the base station using the available frequency resources during the COT duration.

[0192] 9. The method of any one of Clauses 1 to 8, wherein the direction information includes indicators, each of the indicators indicating a communication direction for a corresponding available frequency resource among the available frequency resources.

[0193] 10. The method as described in Clause 9, wherein each of the indicators indicates an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction for the corresponding available frequency resource in the available frequency resources.

[0194] 11. The method as described in any one of Clauses 1 to 8, wherein:

[0195] Each available frequency resource comprises two or more parts; and

[0196] The direction information includes indicators, each of which indicates the communication direction for a corresponding portion of two or more portions of a given available frequency resource.

[0197] 12. The method as described in any one of Clauses 1 to 8, wherein:

[0198] The direction information includes an indicator for indicating the frequency format; and

[0199] Determining the one or more communication directions for each of the available frequency resources includes mapping the communication direction in the indicated frequency format to the available frequency resources in the frequency domain.

[0200] 13. The method of claim 12, wherein mapping the communication direction in the indicated frequency format to available frequency resources in the frequency domain comprises:

[0201] If one of the available frequency resources falls entirely within one of the communication directions in the frequency format in the frequency domain, then the communication direction is assigned to the available frequency resource.

[0202] 14. The method as described in Clause 13, wherein the communication direction comprises one of an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction.

[0203] 15. The method of any one of clauses 12 to 14, wherein mapping the communication direction in the indicated frequency format to available frequency resources in the frequency domain comprises:

[0204] If one of the available frequency resources overlaps with a first communication direction and a second communication direction in the communication direction of the frequency format in the frequency domain, then it is determined which of the first and second communication directions has the greatest overlap with the available frequency resource in the frequency domain, and the determined communication direction is assigned to the available frequency resource.

[0205] 16. The method as described in Clause 15, wherein:

[0206] The first communication direction in the communication direction includes one of the following: uplink (UL) direction, downlink (DL) direction, or in-band full-duplex direction; and

[0207] The second communication direction in the communication direction includes one of the different directions: the UL direction, the DL direction, or the in-band full-duplex direction.

[0208] 17. The method of any one of clauses 12 to 14, wherein mapping the communication direction in the indicated frequency format to available frequency resources in the frequency domain comprises:

[0209] If one of the available frequency resources overlaps in the frequency domain with a first communication direction and a second communication direction in the communication direction of the frequency format, then the first communication direction is assigned to a first portion of the available frequency resource, and the second communication direction is assigned to a second portion of the available frequency resource.

[0210] 18. The method as described in Clause 17, wherein:

[0211] The first communication direction in the communication direction includes one of the following: uplink (UL) direction, downlink (DL) direction, or in-band full-duplex direction; and

[0212] The second communication direction in the communication direction includes one of the different directions: the UL direction, the DL direction, or the in-band full-duplex direction.

[0213] 19. The method of any one of Clauses 12 to 18, wherein the direction information is received in a control message.

[0214] 20. The method as described in Clause 19, wherein the direction information is in a resource format indicator in the control message.

[0215] 21. The method of Clause 20, wherein the resource format indicator includes a time slot format indicator.

[0216] 22. The method described in Clause 20 or 21 further includes:

[0217] Determine the position of the resource format indicator in the control message; and

[0218] The direction information in the resource format indicator is received based on the determined location.

[0219] 23. An apparatus for wireless communication, comprising:

[0220] processor;

[0221] Memory coupled to the processor; and

[0222] Instructions, which are stored in the memory and executable by the processor, to cause the device to:

[0223] Receive indications of available frequency resources;

[0224] Receive direction information;

[0225] Based on the direction information, one or more communication directions are determined for each available frequency resource in the available frequency resources; and

[0226] Based on one or more communication directions determined for each of the available frequency resources, the available frequency resources are used to communicate with the base station.

[0227] 24. The apparatus as described in Clause 23, wherein the indication of available frequency resources and the direction information are received in a control message.

[0228] 25. The apparatus as described in Clause 24, wherein the control message includes downlink control information.

[0229] 26. The apparatus of any one of clauses 23 to 25, wherein each of the available frequency resources comprises a corresponding frequency band.

[0230] 27. The method of any one of Clauses 23 to 26, wherein each available frequency resource in the available frequency resources comprises a corresponding set of resource blocks.

[0231] 28. The apparatus as described in Clause 27, wherein for each available frequency resource, each resource block in the corresponding resource block set includes a corresponding set of subcarriers.

[0232] 29. The apparatus of any one of Clauses 23 to 28, wherein each of the available frequency resources comprises a corresponding subcarrier.

[0233] 30. The apparatus of any one of clauses 23 to 29, further comprising instructions executable by the processor to cause the apparatus to receive a channel occupied time (COT) duration, wherein the instructions executable by the processor to cause the apparatus to communicate with the base station using the available frequency resources include instructions executable by the processor to cause the apparatus to communicate with the base station using the available frequency resources during the COT duration.

[0234] 31. The apparatus of any one of clauses 23 to 30, wherein the direction information includes indicators, each of the indicators indicating a communication direction for a corresponding available frequency resource among the available frequency resources.

[0235] 32. The apparatus as described in Clause 31, wherein each of the indicators indicates an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction for the corresponding available frequency resource among the available frequency resources.

[0236] 33. The apparatus of any one of claims 23 to 30, wherein each of the available frequency resources comprises two or more portions, and the direction information comprises indicators, each of the indicators indicating a communication direction for a corresponding portion of the two or more portions of the corresponding available frequency resource.

[0237] 34. The apparatus of any one of claims 23 to 30, wherein the direction information includes an indicator for indicating a frequency format, and the instructions executable by the processor to cause the apparatus to determine the one or more communication directions for each of the available frequency resources include: instructions executable by the processor to cause the apparatus to map the communication direction in the indicated frequency format to an available frequency resource in the frequency domain.

[0238] 35. The apparatus of claim 34, wherein the instructions executable by the processor to cause the apparatus to map the communication direction in the indicated frequency format to available frequency resources in the frequency domain include instructions executable by the processor to cause the apparatus to:

[0239] If one of the available frequency resources falls entirely within one of the communication directions in the frequency format in the frequency domain, then the communication direction is assigned to the available frequency resource.

[0240] 36. The apparatus of Clause 35, wherein one of the communication directions comprises an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction.

[0241] 37. The apparatus of any one of clauses 34 to 36, wherein the instructions executable by the processor to cause the apparatus to map the communication direction in the indicated frequency format to available frequency resources in the frequency domain include instructions executable by the processor to cause the apparatus to:

[0242] If one of the available frequency resources overlaps with a first communication direction and a second communication direction in the communication direction of the frequency format in the frequency domain, then it is determined which of the first and second communication directions has the greatest overlap with the available frequency resource in the frequency domain, and the determined communication direction is assigned to the available frequency resource.

[0243] 38. The apparatus as described in Clause 37, wherein:

[0244] The first communication direction in the communication direction includes one of the following: uplink (UL) direction, downlink (DL) direction, or in-band full-duplex direction; and

[0245] The second communication direction in the communication direction includes one of the different directions: the UL direction, the DL direction, or the in-band full-duplex direction.

[0246] 39. The apparatus of any one of clauses 34 to 36, wherein the instructions executable by the processor to cause the apparatus to map the communication direction in the indicated frequency format to available frequency resources in the frequency domain include instructions executable by the processor to cause the apparatus to:

[0247] If one of the available frequency resources overlaps in the frequency domain with a first communication direction and a second communication direction in the communication direction of the frequency format, then the first communication direction is assigned to a first portion of the available frequency resource, and the second communication direction is assigned to a second portion of the available frequency resource.

[0248] 40. The apparatus as described in Clause 39, wherein:

[0249] The first communication direction in the communication direction includes one of the following: uplink (UL) direction, downlink (DL) direction, or in-band full-duplex direction; and

[0250] The second communication direction in the communication direction includes one of the different directions: the UL direction, the DL direction, or the in-band full-duplex direction.

[0251] 41. The apparatus of any one of clauses 34 to 40, wherein the instructions executable by the processor to cause the apparatus to receive the direction information include instructions executable by the processor to cause the apparatus to receive the direction information in a control message.

[0252] 42. The apparatus as described in Clause 41, wherein the direction information is in a resource format indicator in the control message.

[0253] 43. The apparatus as described in Clause 42, wherein the resource format indicator includes a time slot format indicator.

[0254] 44. The apparatus as described in clause 42 or 43 further includes instructions executable by the processor to make the apparatus use the following:

[0255] Determine the position of the resource format indicator in the control message; and

[0256] The direction information in the resource format indicator is received based on the determined location.

[0257] 45. An apparatus for wireless communication at a user equipment (UE), comprising:

[0258] A unit for receiving indications of available frequency resources;

[0259] A unit used for receiving direction information;

[0260] A unit for determining one or more communication directions for each available frequency resource based on the direction information; and

[0261] A unit for communicating with a base station using the available frequency resources based on one or more communication directions determined for each of the available frequency resources.

[0262] 46. ​​The apparatus as described in Clause 45, wherein the indication of available frequency resources and the direction information are received in a control message.

[0263] 47. The apparatus as described in Clause 46, wherein the control message includes downlink control information.

[0264] 48. The apparatus of any one of clauses 45 to 47, wherein each of the available frequency resources comprises a corresponding frequency band.

[0265] 49. The apparatus of any one of clauses 45 to 48, wherein each of the available frequency resources comprises a corresponding set of resource blocks.

[0266] 50. The apparatus as described in Clause 49, wherein for each available frequency resource, each resource block in the corresponding resource block set includes a corresponding subcarrier set.

[0267] 51. The apparatus of any one of clauses 45 to 50, wherein each of the available frequency resources comprises a corresponding subcarrier.

[0268] 52. The apparatus of any one of clauses 45 to 51 further includes a unit for receiving a channel occupancy time (COT) duration, wherein the unit for communicating with the base station using the available frequency resources includes a unit for communicating with the base station using the available frequency resources during the COT duration.

[0269] 53. The apparatus of any one of clauses 45 to 52, wherein the direction information includes indicators, each of the indicators indicating a communication direction for a corresponding available frequency resource among the available frequency resources.

[0270] 54. The apparatus as described in Clause 53, wherein each of the indicators indicates an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction for the corresponding available frequency resource in the available frequency resources.

[0271] 55. The apparatus of any one of clauses 45 to 52, wherein:

[0272] Each available frequency resource comprises two or more parts; and

[0273] The direction information includes indicators, each of which indicates the communication direction for a corresponding portion of two or more portions of a given available frequency resource.

[0274] 56. The apparatus of any one of clauses 45 to 52, wherein:

[0275] The direction information includes an indicator for indicating the frequency format; and

[0276] The unit for determining the one or more communication directions for each of the available frequency resources includes: a unit for mapping the communication direction in the indicated frequency format to the available frequency resources in the frequency domain.

[0277] 57. The apparatus of claim 56, wherein the unit for mapping the communication direction in the indicated frequency format to available frequency resources in the frequency domain comprises:

[0278] A unit for assigning a communication direction in the communication direction to the available frequency resource if one of the available frequency resources falls completely within a communication direction in the frequency format in the frequency domain.

[0279] 58. The apparatus of Clause 57, wherein one of the communication directions comprises an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction.

[0280] 59. The apparatus of any one of clauses 56 to 58, wherein the unit for mapping the communication direction in the indicated frequency format to available frequency resources in the frequency domain comprises:

[0281] A unit for determining which of the first and second communication directions in the communication directions overlaps most with the available frequency resource in the frequency domain if one of the available frequency resources overlaps with a first communication direction and a second communication direction in the communication direction of the frequency format in the frequency domain, and assigning the determined communication direction to the available frequency resource.

[0282] 60. The apparatus as described in Clause 59, wherein:

[0283] The first communication direction in the communication direction includes one of the following: uplink (UL) direction, downlink (DL) direction, or in-band full-duplex direction; and

[0284] The second communication direction in the communication direction includes one of the different directions: the UL direction, the DL direction, or the in-band full-duplex direction.

[0285] 61. The apparatus of any one of clauses 56 to 58, wherein the unit for mapping the communication direction in the indicated frequency format to available frequency resources in the frequency domain comprises:

[0286] A unit for assigning the first communication direction to a first portion of the available frequency resource and the second communication direction to a second portion of the available frequency resource if one of the available frequency resources overlaps with a first communication direction and a second communication direction in the communication direction of the frequency format in the frequency domain.

[0287] 62. The apparatus as described in Clause 61, wherein:

[0288] The first communication direction in the communication direction includes one of the following: uplink (UL) direction, downlink (DL) direction, or in-band full-duplex direction; and

[0289] The second communication direction in the communication direction includes one of the different directions: the UL direction, the DL direction, or the in-band full-duplex direction.

[0290] 63. The apparatus of any one of clauses 56 to 62, wherein the direction information is received in a control message.

[0291] 64. The apparatus as described in Clause 63, wherein the direction information is in a resource format indicator in the control message.

[0292] 65. The apparatus as described in Clause 64, wherein the resource format indicator includes a time slot format indicator.

[0293] 66. The apparatus as described in clauses 64 or 65 further includes:

[0294] A unit for determining the position of the resource format indicator in the control message; and

[0295] A unit for receiving the direction information in the resource format indicator based on the determined location.

[0296] 67. A method for wireless communication at a base station, comprising:

[0297] Identify available frequency resources from multiple frequency resources;

[0298] Generate an indication of the available frequency resources;

[0299] Sending the indication and direction information regarding the available frequency resources to the user equipment (UE); and

[0300] Based on the directional information, the available frequency resources are used to communicate with the UE.

[0301] 68. The method as described in Clause 67, wherein determining the available frequency resources includes:

[0302] Detect the energy for each of the plurality of frequency resources;

[0303] The energy detected for each of the plurality of frequency resources is compared with a threshold; and

[0304] The available frequency resources are determined based on the comparison.

[0305] 69. The method as described in Clause 67 or 68, wherein sending the indication of available frequency resources and the direction information comprises:

[0306] Generate a control message including the indication of the available frequency resources and the direction information; and

[0307] Send the control message.

[0308] 70. The method as described in Clause 69, wherein the control message includes downlink control information.

[0309] 71. The method of any one of Clauses 67 to 70, wherein each of the available frequency resources comprises a corresponding frequency band.

[0310] 72. The method of any one of Clauses 67 to 71, wherein each available frequency resource in the available frequency resources comprises a corresponding set of resource blocks.

[0311] 73. The method as described in Clause 72, wherein for each available frequency resource, each resource block in the corresponding resource block set includes a corresponding subcarrier set.

[0312] 74. The method of any one of clauses 67 to 73, wherein each available frequency resource in the available frequency resources includes a corresponding subcarrier.

[0313] 75. The method of any one of clauses 67 to 74 further includes:

[0314] Sending a Channel Occupied Time (COT) duration to the UE, wherein communicating with the UE using the available frequency resources includes: communicating with the UE using the available frequency resources during the COT duration.

[0315] 76. The method of any one of clauses 67 to 75, wherein the direction information includes indicators, each of the indicators indicating a communication direction for a corresponding available frequency resource among the available frequency resources.

[0316] 77. The method as described in Clause 76, wherein each of the indicators indicates an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction for the corresponding available frequency resource in the available frequency resources.

[0317] 78. The method as described in any one of Clauses 67 to 75, wherein:

[0318] Each available frequency resource comprises two or more parts; and

[0319] The direction information includes indicators, each of which indicates the communication direction for a corresponding portion of two or more portions of a given available frequency resource.

[0320] 79. The method of any one of clauses 67 to 75, wherein the direction information includes an indicator for indicating a frequency format.

[0321] 80. The method as described in Clause 79, wherein sending the direction information includes:

[0322] Generate a control message, the control message including the indicator for indicating the frequency format; and

[0323] The control message is sent to the UE.

[0324] 81. The method of Clause 80, wherein the indicator for indicating the frequency format is in the resource format indicator in the control message.

[0325] 82. The method as described in Clause 81, wherein the resource format indicator includes a time slot format indicator.

[0326] 83. The method described in Clause 81 or 82 further includes:

[0327] Generate a position indicator that indicates the position of the indicator in the control message; and

[0328] The location indicator is sent to the UE.

[0329] 84. An apparatus for wireless communication, comprising:

[0330] processor;

[0331] Memory coupled to the processor; and

[0332] Instructions, which are stored in the memory and executable by the processor, to cause the device to:

[0333] Identify available frequency resources from multiple frequency resources;

[0334] Generate an indication of the available frequency resources;

[0335] Sending the indication and direction information regarding the available frequency resources to the user equipment (UE); and

[0336] Based on the directional information, the available frequency resources are used to communicate with the UE.

[0337] 85. The apparatus as described in Clause 84, wherein instructions executable by the processor to cause the apparatus to determine the available frequency resources include instructions executable by the processor to cause the apparatus to:

[0338] Detect the energy for each of the plurality of frequency resources;

[0339] The energy detected for each of the plurality of frequency resources is compared with a threshold; and

[0340] The available frequency resources are determined based on the comparison.

[0341] 86. The apparatus as described in clause 84 or 85, wherein the instructions executable by the processor to cause the apparatus to send the indication of available frequency resources and the direction information include instructions executable by the processor to cause the apparatus to:

[0342] Generate a control message including the indication of the available frequency resources and the direction information; and

[0343] Send the control message.

[0344] 87. The apparatus as described in Clause 86, wherein the control message includes downlink control information.

[0345] 88. The apparatus of any one of clauses 84 to 87, wherein each of the available frequency resources comprises a corresponding frequency band.

[0346] 89. The apparatus of any one of clauses 84 to 88, wherein each of the available frequency resources comprises a corresponding set of resource blocks.

[0347] 90. The apparatus as described in Clause 89, wherein for each available frequency resource, each resource block in the corresponding resource block set includes a corresponding subcarrier set.

[0348] 91. The apparatus of any one of clauses 84 to 90, wherein each of the available frequency resources comprises a corresponding subcarrier.

[0349] 92. The apparatus of any one of clauses 84 to 91 further includes instructions executable by the processor to cause the apparatus to send a Channel Occupied Time (COT) duration to the UE, wherein the instructions executable by the processor to cause the apparatus to communicate with the UE using the available frequency resources include instructions executable by the processor to cause the apparatus to communicate with the UE using the available frequency resources during the COT duration.

[0350] 93. The apparatus of any one of clauses 84 to 92, wherein the direction information includes indicators, each of the indicators indicating a communication direction for a corresponding available frequency resource among the available frequency resources.

[0351] 94. The apparatus as described in Clause 93, wherein each of the indicators indicates an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction for the corresponding available frequency resource in the available frequency resources.

[0352] 95. The apparatus of any one of clauses 84 to 92, wherein:

[0353] Each available frequency resource comprises two or more parts; and

[0354] The direction information includes indicators, each of which indicates the communication direction for a corresponding portion of two or more portions of a given available frequency resource.

[0355] 96. The apparatus of any one of clauses 84 to 92, wherein the direction information includes an indicator for indicating a frequency format.

[0356] 97. The apparatus as described in Clause 96, wherein the instructions executable by the processor to cause the apparatus to transmit the direction information include instructions executable by the processor to cause the apparatus to:

[0357] Generate a control message, the control message including the indicator for indicating the frequency format; and

[0358] The control message is sent to the UE.

[0359] 98. The apparatus as described in Clause 97, wherein the indicator for indicating the frequency format is in the resource format indicator in the control message.

[0360] 99. The apparatus as described in Clause 98, wherein the resource format indicator includes a time slot format indicator.

[0361] 100. The apparatus as described in clause 98 or 99, wherein the instructions cause the apparatus to:

[0362] Generate a position indicator that indicates the position of the indicator in the control message; and

[0363] The location indicator is sent to the UE.

[0364] 101. An apparatus for wireless communication at a base station, comprising:

[0365] A unit used to determine available frequency resources from multiple frequency resources;

[0366] A unit for generating an indication of the available frequency resources;

[0367] A unit for transmitting the indication and direction information regarding the available frequency resources to a user equipment (UE); and

[0368] A unit for communicating with the UE using the available frequency resources based on the direction information.

[0369] 102. The apparatus as described in clause 101, wherein the unit for determining the available frequency resources comprises:

[0370] A unit for detecting the energy for each of the plurality of frequency resources;

[0371] A unit for comparing the energy detected for each of the plurality of frequency resources with a threshold; and

[0372] A unit used to determine the available frequency resources based on the comparison.

[0373] 103. The apparatus as described in clause 101 or 102, wherein the unit for transmitting the indication of available frequency resources and the direction information comprises:

[0374] A unit for generating a control message including the indication of the available frequency resources and the direction information; and

[0375] A unit used to send the control messages.

[0376] 104. The apparatus as described in Clause 103, wherein the control message includes downlink control information.

[0377] 105. The apparatus of any one of clauses 101 to 104, wherein each of the available frequency resources comprises a corresponding frequency band.

[0378] 106. The apparatus of any one of clauses 101 to 104, wherein each of the available frequency resources comprises a corresponding set of resource blocks.

[0379] 107. The apparatus as described in Clause 106, wherein for each available frequency resource, each resource block in the corresponding resource block set includes a corresponding subcarrier set.

[0380] 108. The apparatus of any one of clauses 101 to 107, wherein each of the available frequency resources comprises a corresponding subcarrier.

[0381] 109. The apparatus of any one of clauses 101 to 108 further includes: a unit for transmitting a channel occupancy time (COT) duration to the UE, wherein the unit for communicating with the UE using the available frequency resources includes: a unit for communicating with the UE using the available frequency resources during the COT duration.

[0382] 110. The apparatus of any one of clauses 101 to 109, wherein the direction information includes indicators, each of the indicators indicating a communication direction for a corresponding available frequency resource among the available frequency resources.

[0383] 111. The apparatus as described in Clause 110, wherein each of the indicators indicates an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction for a corresponding available frequency resource among the available frequency resources.

[0384] 112. The apparatus of any one of clauses 101 to 109, wherein:

[0385] Each available frequency resource comprises two or more parts; and

[0386] The direction information includes indicators, each of which indicates the communication direction for a corresponding portion of two or more portions of a given available frequency resource.

[0387] 113. The apparatus of any one of clauses 101 to 109, wherein the direction information includes an indicator for indicating a frequency format.

[0388] 114. The apparatus as described in clause 113, wherein the unit for transmitting the direction information comprises:

[0389] A unit for generating control messages, the control messages including the indicator for indicating the frequency format; and

[0390] A unit used to send the control message to the UE.

[0391] 115. The apparatus as described in Clause 114, wherein the indicator for indicating the frequency format is in the resource format indicator in the control message.

[0392] 116. The apparatus as described in Clause 115, wherein the resource format indicator includes a time slot format indicator.

[0393] 117. The apparatus as described in clauses 115 or 116 further includes:

[0394] A unit for generating a position indicator, the position indicator indicating the position of the indicator in the control message; and

[0395] A unit for sending the location indicator to the UE.

[0396] Any reference to elements in this document using names such as "first," "second," etc., does not generally restrict the number or order of these elements. Rather, these names are used herein as a convenient way to distinguish between two or more elements or instances of a single element. Therefore, references to "first" and "second" elements do not imply that only two elements can be used, or that the first element must precede the second element.

[0397] In this disclosure, the term “exemplary” is used to mean “serving as an example, instance, or illustration.” Any implementation or aspect described herein as “exemplary” is not necessarily to be construed as being more preferred or advantageous than other aspects of this disclosure. Similarly, the term “aspect” does not require that all aspects of this disclosure include the features, advantages, or modes of operation discussed. The term “coupling” is used herein to refer to direct or indirect electrical coupling between two structures. As used herein, including in the claims, the use of “or” in a list of items (e.g., a list of items beginning with phrases such as “at least one” or “one or more”) indicates an inclusive list, such that a list of at least one of A, B, or C represents A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase “based on” should not be construed as a reference to a closed set of conditions. For example, an exemplary step described as “based on condition A” may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase “based on” should be interpreted in the same way as the phrase “at least partially based on.”

[0398] The foregoing description of this disclosure is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not intended to be limited to the examples described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for conducting wireless communication at a user equipment (UE), comprising: Receive indications of available frequency resources; Receive direction information, the direction information indicating an in-band full-duplex direction for at least one of the available frequency resources; Based on the direction information, one or more communication directions are selected for each available frequency resource, wherein selecting the one or more communication directions for each available frequency resource includes identifying the in-band full-duplex direction for at least one available frequency resource based on the direction information; and Based on the one or more communication directions for each of the available frequency resources, the available frequency resources are used to communicate with network devices.

2. The method according to claim 1, further comprising a received channel occupancy time (COT) duration, wherein, Communicating with the network device using the available frequency resources includes: communicating with the network device using the available frequency resources during the COT duration.

3. The method according to claim 1, wherein, The direction information includes indicators, each of which indicates the communication direction for a corresponding available frequency resource among the available frequency resources.

4. The method according to claim 3, wherein, Each of the indicators indicates an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction for a corresponding available frequency resource in the available frequency resources.

5. The method according to claim 1, wherein: Each available frequency resource comprises two or more parts; and The direction information includes indicators, each of which indicates the direction of communication for a corresponding portion of two or more portions of a given available frequency resource.

6. A method for conducting wireless communication at a user equipment (UE), comprising: Receive indications of available frequency resources; Receive direction information, the direction information including an indicator indicating the frequency format; Based on the direction information, one or more communication directions are selected for each available frequency resource, wherein selecting the one or more communication directions for each available frequency resource includes mapping the communication directions in the indicated frequency format to the available frequency resources in the frequency domain, wherein one available frequency resource overlaps with a first communication direction and a second communication direction in the communication directions of the frequency format in the frequency domain, and mapping the communication directions in the indicated frequency format to the available frequency resources in the frequency domain includes determining which of the first and second communication directions has the greatest overlap with the one available frequency resource in the frequency domain, and assigning the determined communication direction to the one available frequency resource; and Based on the one or more communication directions for each of the available frequency resources, the available frequency resources are used to communicate with network devices.

7. An apparatus for wireless communication, comprising: At least one processor; At least one memory coupled to the at least one processor; as well as Instructions, which are stored in the at least one memory and executable by the at least one processor, to cause the device to: Receive indications of available frequency resources; Receive direction information, the direction information indicating an in-band full-duplex direction for at least one of the available frequency resources; Based on the direction information, one or more communication directions are selected for each of the available frequency resources, wherein the instructions executable by the at least one processor to enable the device to select the one or more communication directions for each of the available frequency resources include instructions executable by the at least one processor to enable the device to identify the in-band full-duplex direction for the at least one available frequency resource based on the direction information; as well as Based on the one or more communication directions for each of the available frequency resources, the available frequency resources are used to communicate with network devices.

8. The apparatus of claim 7, further comprising instructions executable by the at least one processor to cause the apparatus to receive a channel occupancy time (COT) duration, wherein, The instructions executable by the at least one processor to enable the device to communicate with the network device using the available frequency resources include: instructions executable by the at least one processor to enable the device to communicate with the network device using the available frequency resources during the COT duration.

9. The apparatus according to claim 7, wherein, The direction information includes indicators, each of which indicates the communication direction for a corresponding available frequency resource among the available frequency resources.

10. The apparatus according to claim 9, wherein, Each of the indicators indicates an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction for a corresponding available frequency resource in the available frequency resources.

11. The apparatus according to claim 7, wherein, Each available frequency resource comprises two or more portions, and the direction information includes indicators, each of which indicates a communication direction for a corresponding portion of the two or more portions of the corresponding available frequency resource.

12. An apparatus for wireless communication, comprising: At least one processor; At least one memory coupled to the at least one processor; as well as Instructions, which are stored in the at least one memory and executable by the at least one processor, to cause the device to: Receive indications of available frequency resources; Receive direction information, the direction information including an indicator indicating the frequency format; Based on the direction information, one or more communication directions are selected for each available frequency resource, wherein the instructions executable by the at least one processor to enable the device to select the one or more communication directions for each available frequency resource include instructions executable by the at least one processor to enable the device to map the communication directions in the indicated frequency format to the available frequency resources in the frequency domain, wherein one of the available frequency resources overlaps with a first communication direction and a second communication direction in the communication directions of the frequency format in the frequency domain, and the instructions executable by the at least one processor to enable the device to map the communication directions in the indicated frequency format to the available frequency resources in the frequency domain include instructions executable by the at least one processor to enable the device to determine which of the first and second communication directions has the greatest overlap with the one available frequency resource in the frequency domain, and to assign the determined communication direction to the one available frequency resource; and Based on the one or more communication directions for each of the available frequency resources, the available frequency resources are used to communicate with network devices.

13. A method for wireless communication at a network device, comprising: Generate an indication of available frequency resources; Sending indication and direction information for the available frequency resources to a user equipment (UE), wherein the direction information indicates an in-band full-duplex direction for at least one of the available frequency resources; and Based on the directional information, the available frequency resources are used to communicate with the UE.

14. The method of claim 13, further comprising sending a Channel Occupancy Time (COT) duration to the UE, wherein, Communicating with the UE using the available frequency resources includes: communicating with the UE using the available frequency resources during the COT duration.

15. The method according to claim 13, wherein, The direction information includes indicators, each of which indicates the communication direction for a corresponding available frequency resource among the available frequency resources.

16. The method according to claim 15, wherein, Each of the indicators indicates an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction for a corresponding available frequency resource in the available frequency resources.

17. The method of claim 13, wherein: Each available frequency resource comprises two or more parts; and The direction information includes indicators, each of which indicates the direction of communication for a corresponding portion of two or more portions of a given available frequency resource.

18. The method according to claim 13, wherein, The direction information includes an indicator for indicating the frequency format.

19. The method of claim 18, wherein: Sending the direction information includes: Generate a control message, the control message including the indicator for indicating the frequency format; and Send the control message to the UE; and The method further includes: Generate a position indicator that indicates the position of the indicator in the control message; and The location indicator is sent to the UE.

20. An apparatus for wireless communication, comprising: At least one processor; At least one memory coupled to the at least one processor; as well as Instructions, stored in the at least one memory and executable by the at least one processor, to cause the device to: Generate an indication of available frequency resources; Sending indication and direction information for the available frequency resources to a user equipment (UE), wherein the direction information indicates an in-band full-duplex direction for at least one of the available frequency resources; and Based on the directional information, the available frequency resources are used to communicate with the UE.

21. The apparatus of claim 20, further comprising instructions executable by the at least one processor to cause the apparatus to transmit a Channel Occupancy Time (COT) duration to the UE, wherein, The instructions executable by the at least one processor to enable the device to communicate with the UE using the available frequency resources include instructions executable by the at least one processor to enable the device to communicate with the UE using the available frequency resources during the COT duration.

22. The apparatus according to claim 20, wherein, The direction information includes indicators, each of which indicates the communication direction for a corresponding available frequency resource among the available frequency resources.

23. The apparatus according to claim 22, wherein, Each of the indicators indicates an uplink (UL) direction, a downlink (DL) direction, or an in-band full-duplex direction for a corresponding available frequency resource in the available frequency resources.

24. The apparatus of claim 20, wherein: Each available frequency resource comprises two or more parts; and The direction information includes indicators, each of which indicates the direction of communication for a corresponding portion of two or more portions of a given available frequency resource.

25. The apparatus according to claim 20, wherein, The direction information includes an indicator for indicating the frequency format.

26. The apparatus according to claim 25, wherein: The instructions executable by the at least one processor to cause the device to transmit the direction information include instructions executable by the at least one processor to cause the device to: Generate a control message, the control message including the indicator for indicating the frequency format; as well as Send the control message to the UE; and The instruction causes the device to: Generate a position indicator that indicates the position of the indicator in the control message; as well as The location indicator is sent to the UE.

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