Preempt, overwrite, or cancel a symbol in a slot format indicator assignment

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment may generate a request for a communication mode to overwrite or cancel a symbol in a time slot of communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands used for carrier aggregation and transmit the request to the base station. Numerous other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims U.S. Provisional Patent Application No. 62 / 991,453, filed on March 18, 2020, entitled “OVERWRITING OR CANCELING SYMBOLS IN A SLOT FORMAT INDICATOR ALLOCATION,” and U.S. Provisional Patent Application No. 62 / 991,454, filed on March 18, 2020, entitled “PREEMPTION OF SYMBOLS IN A SLOT FORMAT INDICATOR ALLOCATION,” and U.S. Provisional Patent Application No. 62 / 991,454, filed on March 18, 2020, entitled “PREEMPTING, OVERWRITING, OR CANAELING SYMBOLS IN A SLOT FORMAT INDICATOR ALLOCATION,” and U.S. Provisional Patent Application No. 62 / 991,454, filed on March 16, 2021, entitled “PREEMPTING, OVERWRITING, OR CANAELING SYMBOLS IN A SLOT FORMAT Priority to U.S. Non-Provisional Patent Application No. 17 / 249,854 entitled "INDICATOR ALLOCATION (Preempting, Overwriting or Cancelling Code Symbols in Slot Format Indicator Allocation)", which applications are hereby expressly incorporated herein by reference.

[0003] Public domain

[0004] Aspects of the present disclosure generally relate to wireless communications and techniques and apparatus for preempting, overwriting, or canceling symbols in slot format indicator allocations.

[0005] background

[0006] Wireless communication systems are widely deployed to provide various telecommunication services such as telephone, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0007] A wireless network may include several base stations (BSs) that can support communications for several user equipments (UEs). A UE may communicate with a BS via a downlink and an uplink. A "downlink" or "forward link" refers to a communication link from a BS to a UE, while an "uplink" or "reverse link" refers to a communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, a gNB, an Access Point (AP), a Radio Head, a Transmit Receiving Point (TRP), a New Radio (NR) BS, or a 5G Node B.

[0008] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate at the city, country, region, and even global level. NR (which may also be referred to as 5G) is an enhancement set to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards. However, as the demand for mobile broadband access continues to grow, there is a need for further improvements in LTE, NR and other radio access technologies.

[0009] Overview

[0010] In some aspects, a wireless communication method performed by a user equipment (UE) may include generating a request to overwrite or cancel a communication mode of a code element in a time slot of communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands used for carrier aggregation. The method may include transmitting the request to the base station. In some aspects, the method may include generating a request to overwrite or cancel a communication mode of a code element set, wherein the code element set may include one or more code elements.

[0011] In some aspects, a wireless communication method performed by a base station may include determining, based at least in part on receiving a request from a UE to overwrite or cancel the communication mode of a symbol in a time slot for communication with the UE, to overwrite or cancel the communication mode of the symbol. The method may include using another communication mode for the symbol in the time slot to communicate with the UE based at least in part on determining to overwrite or cancel the communication mode of the symbol.

[0012] In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to generate a request for a communication mode to overwrite or cancel a symbol in a time slot for communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands for carrier aggregation, and transmit the request to the base station. The carrier aggregation may be contiguous or non-contiguous, intra-band or inter-band.

[0013] In some aspects, a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to determine, based at least in part on receiving a request from a UE to overwrite or cancel a communication mode of a symbol in a time slot for communication with the UE, to overwrite or cancel the communication mode of the symbol, and to communicate with the UE using another communication mode for the symbol in the time slot based at least in part on determining the communication mode of the symbol to overwrite or cancel.

[0014] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: generate a request for a communication mode to overwrite or cancel a codeword in a time slot of communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands used for carrier aggregation, and transmit the request to the base station.

[0015] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to: determine a communication mode to overwrite or cancel a codeword in a time slot for communication with the UE based at least in part on receiving a request from a UE for overwriting or canceling the communication mode of the codeword, and communicate with the UE using another communication mode for the codeword in the time slot based at least in part on determining the communication mode to overwrite or cancel the codeword.

[0016] In some aspects, an apparatus for wireless communications may include: a device for generating a request for a communication mode to overwrite or cancel code elements in a time slot for communications with a base station based at least in part on interference in communications with the base station on one or more frequency bands used for carrier aggregation, and a device for transmitting the request to the base station.

[0017] In some aspects, an apparatus for wireless communications may include: a device for determining a communication mode of a codeword to be overwritten or canceled based at least in part on receiving a request from a UE for a communication mode of a codeword to be overwritten or canceled for communications with the UE, and a device for communicating with the UE using another communication mode for the codeword in the time slot based at least in part on determining the communication mode of the codeword to be overwritten or canceled.

[0018] In some aspects, a wireless communication method performed by a user equipment may include generating a request for a slot format indicator (SFI) for a time slot of communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands used for carrier aggregation. The method may include transmitting the request to the base station.

[0019] In some aspects, a method of wireless communication performed by a base station may include determining to use an SFI for a time slot based at least in part on receiving a request from a UE to use the SFI for a time slot for communication with the UE. The method may include communicating with the UE by using the SFI for the time slot based at least in part on determining to use the SFI for the time slot.

[0020] In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to generate a request for an SFI for a time slot of communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands for carrier aggregation, and transmit the request to the base station.

[0021] In some aspects, a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to determine to use the SFI for a time slot for communication with the UE based at least in part on receiving a request from the UE to use the SFI for the time slot, and to communicate with the UE by using the SFI for the time slot based at least in part on determining to use the SFI for the time slot.

[0022] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: generate a request for an SFI for a time slot of communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands used for carrier aggregation, and transmit the request to the base station.

[0023] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to: determine to use the SFI for a time slot for communication with the UE based at least in part on receiving a request from a UE to use the SFI for the time slot, and communicate with the UE by using the SFI for the time slot based at least in part on determining to use the SFI for the time slot.

[0024] In some aspects, an apparatus for wireless communications may include: a device for generating a request for an SFI for a time slot for communications with a base station based at least in part on interference in communications with the base station on one or more frequency bands used for carrier aggregation, and a device for transmitting the request to the base station.

[0025] In some aspects, an apparatus for wireless communications may include: a device for determining to use the SFI for a time slot for communications with the UE based at least in part on receiving a request from the UE to use the SFI for the time slot, and a device for communicating with the UE by using the SFI for the time slot based at least in part on determining to use the SFI for the time slot.

[0026] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as substantially described herein with reference to and as illustrated in the accompanying figures and specification.

[0027] The foregoing has broadly outlined the features and technical advantages of examples according to the present disclosure in an effort to make the following detailed description better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be easily used as a basis for modifying or designing other structures for implementing the same purpose as the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the accompanying drawings is provided for the purpose of illustration and description and is not intended to define limitations on the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to understand the above-stated features of the present disclosure in detail, the above briefly summarized content may be described in more detail with reference to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and should not be considered to limit its scope, as the description may allow for other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0030] Figure 1 is a block diagram illustrating an example of a wireless communication network according to the present disclosure.

[0031] Figure 2 is a block diagram illustrating an example of a base station and a user equipment (UE) in communication in a wireless communication network according to the present disclosure.

[0032] Figure 3 is a diagram illustrating an example of a time slot format according to the present disclosure.

[0033] Figure 4 is a diagram illustrating an example of a time slot format with a communication mode according to the present disclosure.

[0034] Figure 5 An example of two base station antenna panels according to the present disclosure is illustrated.

[0035] Figure 6 An example of a UE experiencing interference in accordance with the present disclosure is illustrated.

[0036] Figure 7 and Figure 8 is a diagram illustrating an example of overwriting or canceling a symbol in a slot format indicator allocation according to the present disclosure.

[0037] Fig. 9 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0038] Fig.10 is a diagram illustrating an example process performed, for example, by a base station according to the present disclosure.

[0039] Fig.11 and 12 is a diagram illustrating an example of slot format indicator preemption according to the present disclosure.

[0040] Fig.13 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0041] Fig.14 is a diagram illustrating an example process performed, for example, by a base station according to the present disclosure.

[0042] Detailed Description

[0043] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function given throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete, and it will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings of this article, those skilled in the art will appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is independently implemented or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using supplements or other other structures, functionality, or structures and functionality as the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be implemented by one or more elements of the claims.

[0044] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0045] It should be noted that while various aspects may be described herein using terminology generally associated with 5G or NR radio access technologies (RATs), various aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and / or RATs after 5G (e.g., 6G).

[0046] Figure 1 1 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (NR) network and / or an LTE network, etc. or may include elements thereof. The wireless network 100 may include several base stations 110 (shown as BS110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NR BS, a B node, a gNB, a 5G B node (NB), an access point, or a transmit receive point (TRP). Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0047] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown in , BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. The BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "B node", "5G NB", and "cell" may be used interchangeably herein.

[0048] In some aspects, the cell may not necessarily be stationary, and the geographic area of ​​the cell may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.

[0049] The wireless network 100 may also include a relay station. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a BS or a UE) and send transmissions of the data to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown in , relay BS 110d may communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS may also be referred to as a relay station, a relay base station, or a relay.

[0050] The wireless network 100 may be a heterogeneous network including different types of BSs, such as a macro BS, a pico BS, a femto BS, and / or a relay BS. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0051] A network controller 130 may be coupled to a set of BSs and may provide coordination and control of these BSs. The network controller 130 may communicate with each BS via a backhaul. The BSs may also communicate with each other directly or indirectly via a wireless or wired backhaul.

[0052] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. UEs may also be referred to as access terminals, terminals, mobile stations, subscriber units, stations, etc. A UE may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0053] Some UEs may be considered as machine type communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags, which may communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to or to a network (e.g., a wide area network (such as the Internet) or a cellular network) via, for example, a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as client equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. In some aspects, a processor component and a memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0054] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific RAT and may operate on one or more frequencies. RAT may also be referred to as a radio technology and / or air interface. Frequency may also be referred to as a carrier and / or frequency channel. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0055] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary to communicate with each other) using one or more sidelink channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocol (e.g., which may include vehicle-to-vehicle (V2V) protocol or vehicle-to-infrastructure (V2I) protocol), and / or mesh network. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0056] As indicated above, Figure 1 are provided as examples. Other examples may differ from those described herein. Figure 1 Examples described.

[0057] The devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc. based on frequency or wavelength. For example, the devices of the wireless network 100 may communicate using an operating band having a first frequency range (FR1) and / or may communicate using an operating band having a second frequency range (FR2), the first frequency range (FR1) may span 410 MHz to 7.125 GHz, and the second frequency range (FR2) may span 24.25 GHz to 52.6 GHz. Frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a "sub-6 GHz" band. Similarly, FR2 is often referred to as a "millimeter wave" band, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as a "millimeter wave" band by the International Telecommunication Union (ITU). Therefore, unless otherwise specifically stated, it should be understood that the terms "sub-6 GHz" and the like, if used herein, may broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise specifically stated, it should be understood that the terms "millimeter wave" and the like, if used herein, may broadly refer to frequencies within the EHF band, frequencies within FR2, and / or mid-band frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0058] Figure 2 is a diagram illustrating an example 200 of a base station 110 and a UE 120 in communication in a wireless network 100 according to the present disclosure. The base station 110 may be equipped with T antennas 234a through 234t, and the UE 120 may be equipped with R antennas 252a through 252r, where in general T≥1 and R≥1.

[0059] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS), demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.

[0060] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols where applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), and / or CQI, or other examples.In some aspects, one or more components of UE 120 may be included in a housing.

[0061] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0062] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include, or may be included within, one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays, etc. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or antenna elements within multiple housings. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements coupled to one or more transmission and / or reception components (such as Figure 2 One or more antenna elements of one or more components).

[0063] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from a controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, where applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in a modem of the UE 120. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antenna(s) 252, modulator and / or demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein, for example, as described with reference to Figure 1-14 as described.

[0064] At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 where applicable, and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The base station 110 may include a scheduler 246 to schedule the UE 120 for downlink and / or uplink communications. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of the base station 110 may be included in a modem of the base station 110. In some aspects, the base station 110 includes a transceiver. The transceiver may include any combination of antenna(s) 234, modulator and / or demodulator 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein, for example, as described with reference to Figure 1-14 as described.

[0065] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) of the UE 120 may perform one or more techniques associated with preempting, overwriting, or canceling symbols in a slot format indicator (SFI) allocation, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Fig. 9 The process of 900 Fig.10 The process of 1000 Fig.13 Process 1300, Fig.14 1400, and / or operations of other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include: a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., directly or after compilation, conversion, and / or interpretation) by one or more processors of base station 110 and / or UE 120, may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example Fig. 9 The process of 900 Fig.10 The process of 1000 Fig.13 Process 1300, Fig.14 In some aspects, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, among other aspects.

[0066] although Figure 2 The blocks in the 200 and 210 are illustrated as distinct components, but the functions described above with respect to these blocks may be implemented using a single hardware, software, or combined component or a combination of various components. For example, the functions described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0067] In some aspects, UE 120 may include: means for generating a request for a communication mode to overwrite or cancel a code element in a time slot for communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands for carrier aggregation (CA), means for transmitting the request to the base station, etc. In some aspects, such means may include in conjunction with Figure 2One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, and / or receive processor 258.

[0068] In some aspects, base station 110 may include: means for determining to overwrite or cancel the communication mode of a symbol in a time slot for communication with the UE based at least in part on receiving a request from the UE for overwriting or canceling the communication mode of the symbol, means for using another communication mode for the symbol in the time slot for communication with the UE based at least in part on determining to overwrite or cancel the communication mode of the symbol, and so on. In some aspects, such means may include in conjunction with Figure 2 One or more components of base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, and / or antenna 234.

[0069] In some aspects, UE 120 may include: means for generating a request for an SFI for a time slot for communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands used for CA, means for transmitting the request to the base station, etc. In some aspects, such means may include in conjunction with Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, and / or receive processor 258.

[0070] In some aspects, base station 110 may include: means for determining to use the SFI for a time slot based at least in part on receiving a request from a UE to use the SFI for a time slot for communication with the UE; means for communicating with the UE by using the SFI for the time slot based at least in part on determining to use the SFI for the time slot, etc. In some aspects, such means may include in conjunction with Figure 2 One or more components of base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, and / or antenna 234.

[0071] As indicated above, Figure 2 are provided as examples. Other examples may differ from those described herein. Figure 2 Examples described.

[0072] Figure 3 is a diagram illustrating an example 300 of a time slot format according to the present disclosure. Figure 3 As shown, the time-frequency resources in the radio access network can be divided into resource blocks, as shown by a single resource block (RB) 305. RB 305 is sometimes referred to as a physical resource block (PRB). RB 305 includes a set of subcarriers (e.g., 12 subcarriers) and a set of symbols (e.g., 14 symbols) that can be scheduled by base station 110 as a unit. In some aspects, RB 305 may include a set of subcarriers in a single time slot. As shown, a single time-frequency resource included in RB 305 may be referred to as a resource element (RE) 310. RE 310 may include a single subcarrier (e.g., in frequency) and a single symbol (e.g., in time). A symbol may be referred to as an OFDM symbol. RE 310 may be used to transmit a modulated symbol, which may be a real value or a complex value.

[0073] In some telecommunication systems (e.g., NR), RB 305 may span 12 subcarriers in a 0.1 millisecond (ms) duration, with a subcarrier spacing of, for example, 15 kilohertz (kHz), 30kHz, 60kHz, or 120kHz, among other examples. A radio frame may include 40 time slots and may have a length of 10ms. Thus, each time slot may have a length of 0.25ms. However, the time slot length may vary depending on a parameter set used for communication (e.g., subcarrier spacing, cyclic prefix format). A time slot may be configured with a link direction (e.g., downlink or uplink) for transmission. In some aspects, the link direction of a time slot may be dynamically configured.

[0074] As indicated above, Figure 3 are provided as examples. Other examples may differ from those described herein. Figure 3 Examples described.

[0075] Figure 4 is a diagram illustrating an example 400 of a time slot format with a communication mode according to the present disclosure.

[0076] A UE configured for time division duplex (TDD) may transmit or receive communications at each symbol of a time slot. Each symbol of the time slot may have a communication mode, which may be an uplink communication mode (U), a downlink communication mode (D), a gap symbol (blank), or a flexible symbol (F). For example, Figure 4 A time slot is shown in which the first 10 symbols are all D and the last 4 symbols are all U. The combination of the communication mode of the time slot may have a slot format indicator (SFI). Figure 4An SFI of 32 is shown, where F symbols 9 and 10 are U. Conversely, the SFI for all Ds may be 0 and the SFI for all Us may be 1. Dynamic TDD is a flexible transmission technique in NR. In LTE, the slot format is typically the same for all UEs within a cell. In contrast, NR provides maximum flexibility in subframe structure, where different UEs may have different slot formats. That is, they may have different permutations of D, U, or F symbols in a slot, depending on the instantaneous traffic load. For example, one UE may have 10 Ds and 4 Us in a slot, while another UE may have 6 Ds and 8 Us in the same slot. As a result, some UEs transmitting uplink communications may interfere with other UEs simultaneously receiving downlink communications. This interference may be referred to as cross-link interference (CLI).

[0077] As indicated above, Figure 4 are provided as examples. Other examples may differ from those described herein. Figure 4 Examples described.

[0078] There is a tradeoff between flexible time slot formats and increased interference. To help illustrate the interference, Figure 5 and Figure 6 The transmit beams of two base stations (e.g., gNBs) and a UE are shown.

[0079] Figure 5 An example 500 of two base stations according to the present disclosure is illustrated.

[0080] A first antenna panel for a first frequency band (Band 1) in a UE may have a first module, a second module, and a third module for transmitting and / or receiving communications on a beam. The first module may establish a link with a first base station (gNB1) using a beam associated with a first transmission configuration indicator (TCI) state 0, and establish a link with the gNB1 using a second beam associated with a second TCI state 3. The second module and the third module may also establish a link with gNB1 using beams associated with TCI state 1 and TCI state 2, respectively. A second antenna panel for a second frequency band (Band 2) in a UE may also have a first module, a second module, and a third module for transmitting and / or receiving communications on a beam. The first module may establish a link with gNB2 using beams associated with a first TCI state A and a second TCI state D. The second module and the third module may also establish a link using beams associated with TCI state B and TCI state C, respectively.

[0081] The first base station and the second base station (gNB1 and gNB2) may be co-located or non-co-located. If the gNB1 and the gNB2 are co-located, or if they are non-co-located (but have similar local environments (which is a common case in small cell scenarios)), and if the band 1 and the band 2 are in millimeter wave (mmWave) bands, such as in FR2 or frequency range 4 (FR4), then the TCI states may be related. That is, TCI state 0 may be equivalent to TCI state A, TCI state 1 may be equivalent to TCI state B, and so on. That is, the steering angles of the energy of TCI state A and TCI state 1 may be closely related, equivalent, or related. Combined Figure 6 Describe the interference affecting these beams.

[0082] As indicated above, Figure 5 are provided as examples. Other examples may differ from those described herein. Figure 5 Examples described.

[0083] Figure 6 An example 600 of a UE experiencing interference in accordance with the present disclosure is illustrated. Figure 6 The antenna (spatial filter) configuration of the UE for uplink communication on frequency band 1 and the configuration of the UE for downlink communication on frequency band 2 are shown.

[0084] like Figure 6 As shown, the module of the UE can be mapped to a beam identified by TCI state 0 from gNB1 for transmitting uplink transmissions. The module can also be mapped to a beam identified by TC1 state A from gNB2 for receiving downlink transmissions. For high data rate scenarios of contiguous or non-contiguous intra-band CA and inter-band CA, different SFIs can be used in different frequency bands.

[0085] While the UE may experience some CLI caused by communications from other UEs, the UE may also experience some signal "clutter" from other objects (e.g., buildings) and, therefore, self-interference in some symbols of uplink communications. For example, if TCI state 0 and TCI state A are the dominant clusters in band 1 and band 2 (due to beam correlation), there may be a self-interference problem caused by clutter in symbols where the UL and DL mode operations are mismatched in these channels. That is, if the SFI of band 1 is set to UL and the SFI of band 2 is set to DL on some symbols of the SFI configured across band 1 and band 2, clutter in the environment may cause self-interference from band 1 and band 2 due to similar signal directions. Although clutter requires the presence of reflective objects or diffraction objects or scattering objects in the environment that "retransmit" energy from the transmitter back to the receiver, it is not always necessary for these objects to exist. Therefore, system design for achieving good quality of service must cover the possibility of clutter and cannot optimistically ignore their existence.

[0086] As indicated above, Figure 6 are provided as examples. Other examples may differ from those described herein. Figure 6 Examples described.

[0087] As combined Figure 5 and 6 As explained, the UE may experience interference for some symbols in a timeslot. The interference may cause degradation of the communication between the UE and the gNB. Although the gNB can select a timeslot format for the UE, the gNB may not be able to select the best timeslot format to mitigate the degradation.

[0088] According to various aspects described herein, a UE may request that a communication mode of a symbol in a time slot be overwritten or canceled. For example, a UE may determine that a communication mode of a symbol in a time slot should be overwritten or changed from U to D due to interference from another UE or due to self-interference caused by a U symbol at a D symbol. The UE may request that the communication mode be overwritten, and the gNB may grant the request. As a result of the UE's request, communication at the symbol may be more successful and may not be degraded due to interference. The UE may also request (e.g., via a cancellation indication (CI)) that the communication mode be canceled in order to eliminate the probability of losing communication at a D symbol due to interference from a U symbol from another UE or the same UE. The UE may signal (CI) one or more gNBs that the UE uses gap symbols in one or more frequency bands instead of the allocated U / D symbols. In some aspects, the UE may request that a communication mode for a set of symbols may be overwritten or canceled, wherein the set of symbols may include one or more symbols.

[0089] Figure 7is a diagram illustrating an example 700 of overwriting or canceling symbols in an SFI allocation according to the present disclosure. Figure 7 Base stations (BSs) 710 (eg, Figure 1 and Figure 2 BS110, Figure 5 and Figure 6 ) and UE 720 (e.g., Figure 1 and Figure 2 UE 120 depicted in Figure 6 UE depicted in FIG.

[0090] As indicated by reference numeral 730, UE 720 may generate a request for a communication mode to overwrite or cancel a symbol in a time slot of communication with BS 710. UE 720 may generate the request based at least in part on interference in communication with BS 710. The interference may be due to movement of UE 720 and associated Doppler fading, clutter in the channel environment, beam blocking, or a combination thereof. In some aspects, the request is for BS 710 to overwrite D in the symbol with U, overwrite U in the symbol with D, or cancel the symbol (UL or DL ​​allocation) to make the symbol a gap symbol or an F symbol. For example, Figure 7 U at symbol 10 is shown, and UE 720 may request that U at symbol 10 be overwritten with D. In some aspects, the request may allow BS 710 to prioritize D over U for this symbol, or prioritize U over D for this symbol. In some aspects, the request is specific to one or more frequency bands.

[0091] As indicated by reference numeral 735, UE 720 may transmit the request to BS 710. The request may be dynamically altered based at least in part on changes in channel conditions (e.g., movement, clutter, clustering, blocking of UE 720). For example, UE 720 may transmit the request in uplink control information (UCI) on a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) for the time slot. In some aspects, UE 720 may indicate an overwrite or cancellation in conjunction with the CI. In some aspects, the request may be semi-static, or may correspond to a specific set of symbols in multiple time slots. For example, the request may apply to the tenth symbol in each of a number of consecutive time slots.

[0092] As indicated above, Figure 7 are provided as examples. Other examples may differ from those described herein. Figure 7 Examples described.

[0093] Figure 8 is a diagram illustrating a continuation of example 700 according to the present disclosure.

[0094] As indicated by reference numeral 740, BS 710 may determine, at least in part, based on a request from UE 720, a communication mode for a symbol in a time slot in which communication is to be overwritten or cancelled. BS 710 may grant a request from UE 720 based at least in part on information about interference, such as a measurement of communication at a symbol, or information about failed communications, or an observed increased bit or block error rate. BS 710 may also consider the movement of UE 720, clutter in the channel environment, beam blocking, or a combination thereof. BS 710 may further consider information about other UEs that affect communication with UE 720 and / or information from other base stations. As indicated by reference numeral 745, BS 710 may transmit an indication to UE 720 that the request is granted. The indication may be in downlink control information (DCI) or a media access channel control element (MAC-CE). The indication may be applicable to multiple time slots and / or may be in a radio resource control (RRC) message. Alternatively, BS 710 may transmit an indication that the request was not granted.

[0095] As in Figure 8 , and as shown by reference numeral 750, UE 720 may overwrite U at symbol 10 with D. UE 720 may thus receive downlink communications at symbol 10 instead of transmitting uplink communications. As a result, communication between BS 710 and UE 720 at symbol 10 for one slot or multiple slots may be improved.

[0096] In some aspects, BS 710 may make some adjustments based on the request. For example, BS 710 may perform rate control based at least in part on the request. BS 710 may increase or decrease the rate based at least in part on whether the request is to change the communication mode from D to U, from U to D, or to cancel the communication mode using flexible symbols or gap symbols. In some aspects, BS 710 may adapt the modulation and coding scheme based at least in part on the request.

[0097] As indicated above, Figure 8 are provided as examples. Other examples may differ from those described herein. Figure 8 Examples described.

[0098] Fig. 9 900 is a diagram illustrating an example process 900 performed, for example, by a UE according to the present disclosure. The example process 900 is a diagram in which a UE (e.g., Figure 1 and Figure 2 UE 120 depicted in Figure 6 The UE depicted in Figure 7-8 An example of a UE 720 depicted in FIG. 7 performing operations associated with overwriting or canceling code elements in an SFI allocation.

[0099] like Fig. 9 As shown in , in some aspects, process 900 may include generating a request to overwrite or cancel a communication mode of a codeword in a time slot for communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands used for CA (block 910). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282) may generate a request to overwrite or cancel a communication mode of a codeword in a time slot for communication with the base station based at least in part on interference in communication with the base station on one or more frequency bands used for CA, as described above. Fig. 9 As further shown in FIG. 9 , in some aspects, process 900 may include transmitting the request to the base station (block 920). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282) may transmit the request to the base station, as described above.

[0100] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0101] In a first aspect, process 900 includes receiving an indication that the request is granted, and communicating with a base station using another communication mode for the symbol in the time slot based at least in part on receiving the indication.

[0102] In a second aspect, either alone or in combination with the first aspect, the communication mode is an uplink communication mode, and the request is to overwrite the uplink communication mode of the symbol with a downlink communication mode.

[0103] In a third aspect, either alone or in combination with one or more of the first and second aspects, the request is for the base station to prioritize a downlink communication mode over an uplink communication mode for the symbol.

[0104] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, the communication mode is a downlink communication mode, and the request is to overwrite the downlink communication mode of the symbol with an uplink communication mode.

[0105] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the request is for the base station to prioritize an uplink communication mode over a downlink communication mode for the symbol.

[0106] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the request is used to cancel the communication mode of the codeword so that the codeword becomes a gap codeword or a flexible codeword as appropriately used by the UE.

[0107] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the request corresponds to the codewords in a plurality of time slots.

[0108] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the interference is based at least in part on one or more of movement of the UE associated with Doppler fading, clutter in the channel environment, beam blocking, or a combination thereof.

[0109] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, transmitting the request comprises transmitting the request in uplink control information on a physical uplink channel for the time slot.

[0110] although Fig. 9 An example block diagram of process 900 is shown, but in some aspects, process 900 may include Fig. 9 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 900. Additionally or alternatively, two or more blocks of the process 900 may be executed in parallel.

[0111] Fig.10 1 is a diagram illustrating an example process 1000 performed, for example, by a base station according to the present disclosure. Example process 1000 is a diagram in which a base station (e.g., Figure 1 and Figure 2 BS 110, as depicted in Figure 5 and Figure 6 The gNB depicted in Figure 7-8 An example of BS710) depicted in FIG. 7 performing operations associated with overwriting or canceling code elements in an SFI allocation.

[0112] like Fig.10 As shown in , in some aspects, process 1000 may include determining to overwrite or cancel a communication mode of a symbol based at least in part on receiving a request from a UE to overwrite or cancel a communication mode of a symbol in a time slot for communication with the UE (block 1010). For example, a base station (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242) may determine to overwrite or cancel a communication mode of a symbol based at least in part on receiving a request from a UE to overwrite or cancel a communication mode of a symbol in a time slot for communication with the UE, as described above.

[0113] like Fig.10As further shown in FIG. 1 , in some aspects, process 1000 may include communicating with the UE to use another communication mode for the symbol in the time slot based at least in part on determining that the communication mode of the symbol is to be overwritten or canceled (block 1020). For example, the base station (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242) may communicate with the UE to use another communication mode for the symbol in the time slot based at least in part on determining that the communication mode of the symbol is to be overwritten or canceled, as described above.

[0114] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0115] In a first aspect, process 1000 includes transmitting an indication to the UE that the request is granted.

[0116] In a second aspect, either alone or in combination with the first aspect, the communication mode is an uplink communication mode, and the indication is the uplink communication mode to overwrite the symbol with a downlink communication mode.

[0117] In a third aspect, alone or in combination with one or more of the first and second aspects, the request from the UE is for the base station to prioritize a downlink communication mode over an uplink communication mode for the symbol.

[0118] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, the communication mode is a downlink communication mode, and the indication is to overwrite the downlink communication mode of the symbol with an uplink communication mode.

[0119] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the request from the UE is for the base station to prioritize uplink communication mode over downlink communication mode for the codeword.

[0120] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the request is to cancel the communication mode of the codeword so that the codeword becomes a gap codeword or a flexible codeword.

[0121] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the request corresponds to the codewords in a plurality of time slots.

[0122] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, determining the communication mode to overwrite or cancel the codeword includes determining the communication mode to overwrite or cancel the codeword based at least in part on movement of the UE, clutter detected by the UE, beam blocking, or a combination thereof.

[0123] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, receiving the request comprises receiving the request in uplink control information on a physical uplink channel for the time slot.

[0124] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, process 1000 includes performing one or more of rate control or modulation and coding scheme adaptation based at least in part on the request.

[0125] although Fig.10 An example block diagram of process 1000 is shown, but in some aspects, process 1000 may include Fig.10 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 1000. Additionally or alternatively, two or more blocks of the process 1000 may be executed in parallel.

[0126] Fig.11 is a diagram illustrating an example 1100 of SLI preemption in accordance with the present disclosure. Fig.11 Base stations (BSs) 1110 (eg, Figure 1 and Figure 2 BS 110, as depicted in Figure 5 and Figure 6 ) and UE 1120 (e.g., Figure 1 and Figure 2 UE 120 depicted in Figure 6 UE depicted in FIG.

[0127] As indicated by reference numeral 1130, UE 1120 may generate a request for an SFI for a time slot of communication with BS 1110 based at least in part on interference in communication with BS 1110. In some aspects, the request is for BS 1110 to replace a first SFI with a second SFI to preempt the first SFI. The request may be a preemption indication (PI) notification or a PI-CI notification and may be part of an intra-band or inter-band CA request. In some aspects, the request is for BS 1110 to indicate a preferred SFI or a non-preferred (e.g., non-allowed) SFI. If non-preferred or non-allowed SFIs are used, these SFIs may result in a significant degradation of quality of service (QoS) in CA.

[0128] UE 1120 may generate the request based at least in part on interference in communication with BS 1110. The interference may be due to movement of UE 1120 and consequent Doppler fading, signaling clutter (local reflection, scattering, diffraction, etc.), beam blocking, or a combination thereof. UE 1120 may generate the request based at least in part on expected QoS. For example, a higher QoS may require a change in SFI.

[0129] The preferred SFI or non-preferred SFI may be for two frequency bands used for CA. In some aspects, the request may be to use a first SFI for a first frequency band and a second SFI for a second frequency band. BS 1110 may coordinate SFI with another base station so that self-interference is minimized.

[0130] In some aspects, BS 1110 may assist UE 1120 in SFI selection. BS 1110 may transmit one or more training symbols for UE 1120 to measure relative signal strength. UE 1120 may select an SFI for the timeslot based at least in part on one or more measurements. The measurements may be based at least in part on CLI and / or self-interference. UE 1120 may report the measurements.

[0131] As indicated by reference numeral 1135, UE 1120 may transmit the request to BS 1110. UE 1120 may transmit the request in uplink control information on a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH). Uplink control information may also be shared in other bands (e.g., sub-6 GHz bands, LTE bands, 3G bands, WiFi bands) in a coexisting non-standalone system. In some aspects, the request is semi-static or corresponds to the symbol or a specific set of symbols in multiple time slots. UE 1120 may transmit the request together with a CA request.

[0132] In some aspects, the UE 1120 may transmit the request jointly with a request to change (e.g., overwrite or cancel) the communication mode for a particular symbol in a time slot. The BS 1110 may coordinate with other base stations, TRPs, remote radio heads (RRHs) for joint indication of SFI preemption and symbol communication mode changes for a single UE across one or more frequency bands and / or across one or more layers, data streams, RF chains, and / or ports.

[0133] As indicated above, Fig.11 are provided as examples. Other examples may differ from those described herein. Fig.11 Examples described.

[0134] Fig.12 is a diagram illustrating a continuation of example 1100 according to the present disclosure.

[0135] As indicated by reference numeral 1140, BS 1110 may determine to use the SFI for a time slot for communication with UE 1120 based at least in part on receiving a request from UE 1120 to use the SFI for the time slot. BS 1110 may grant the request from UE 1120 based at least in part on information about interference, such as measurements of communication at symbols or information about failed communications, increased bit or block error rates, etc. BS 1110 may also consider movement of UE 1120, signaling clutter, beam blocking, or a combination thereof. BS 1110 may further consider information about other UEs that affect communication with UE 1120 and / or information from other base stations.

[0136] As indicated by reference numeral 1145, BS 1110 may transmit an indication to UE 1120 that the request was granted. The indication may be in a DCI or MAC-CE. The indication may apply to multiple time slots and / or may be in an RRC message. In some aspects, the indication may instruct UE 1120 to switch beams. Alternatively, BS 1110 may transmit an indication that the request was not granted.

[0137] As in Fig.12 1150, UE 1120 may use a second SFI instead of the first SFI. The second SFI may be considered a new SFI 1204, while the first SFI may be considered a preempted SFI 1202. For example, the preempted SFI 1202 may be a slot format 32 with flexible symbols (F) 10 and 11 set to UL, while the new SFI 1204 may be a slot format 45 with flexible symbols 6 and 7 set to UL. Fig.12 As shown, there is a difference between the preempted SFI 1202 and the new SFI 1204. The new SFI 1204 may have 4 additional ULs (symbols 6-9). The UE 1120 may thus transmit more uplink communications in this time slot. The UE 1120 may have determined that there is or was significant interference in symbols 6-9 that degraded downlink communications, and thus determined that symbols 6-9 should be uplink communications in order to utilize these symbols in the time slot. As a result, communications between the BS 1110 and the UE 1120 for a single or multiple time slots may be improved.

[0138] As indicated above, Fig.12 are provided as examples. Other examples may differ from those described herein. Fig.12 Examples described.

[0139] Fig.13 1 is a diagram illustrating an example process 1300 performed, for example, by a UE according to the present disclosure. The example process 1300 is a diagram in which a UE (e.g., Figure 1and Figure 2 UE 120 depicted in Figure 6 The UE depicted in Fig.11 and Fig.12 An example of UE 1120) depicted in FIG. 1 performing operations associated with SFI preemption.

[0140] like Fig.13 As shown, in some aspects, process 1300 may include generating a request for an SFI for a time slot for communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands used for CA (block 1310). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282) may generate a request for an SFI for a time slot for communication with the base station based at least in part on interference in communication with the base station on one or more frequency bands used for CA, as described above.

[0141] like Fig.13 As further shown in FIG. 1 , in some aspects, process 1300 may include transmitting the request to a base station (block 1320). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282) may transmit the request to the base station, as described above.

[0142] Process 1300 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0143] In a first aspect, process 1300 includes receiving an indication that the request is granted, and communicating with the base station using the SFI for the time slot based at least in part on receiving the indication.

[0144] In a second aspect, either alone or in combination with the first aspect, the indication comprises an instruction for the UE to switch beams.

[0145] In a third aspect, alone or in combination with one or more of the first and second aspects, the request is to use a first SFI for a first frequency band of the one or more frequency bands and a second SFI for a second frequency band of the one or more frequency bands.

[0146] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, generating the request includes generating the request for the SFI based at least in part on one or more of an expected quality of service, an achievable data rate, an achievable bit rate, or a block error rate (BLER) for CA.

[0147] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, process 1300 includes receiving one or more training symbols for one or more measurements of interference with communications with the base station, and selecting an SFI for the time slot based at least in part on the one or more measurements.

[0148] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the request indicates one or more non-preferred SFIs for the timeslot.

[0149] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, transmitting the request to the base station includes transmitting the request jointly with a request to overwrite or cancel the communication mode of the code elements in the time slot.

[0150] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the interference is at least partially based on one or more of the UE's mobility, signaling clutter, beam clustering, beam blocking, or a combination thereof.

[0151] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, transmitting the request includes transmitting the request together with a CA request.

[0152] although Fig.13 Example blocks of process 1300 are shown, but in some aspects, process 1300 may include Fig.13 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 1300. Additionally or alternatively, two or more blocks of the process 1300 may be executed in parallel.

[0153] Fig.14 14 is a diagram illustrating an example process 1400 performed, for example, by a base station according to the present disclosure. Example process 1400 is a diagram in which a base station (e.g., Figure 1 and 2 BS 110, as depicted in Figure 5 and 6 gNB in Fig.11 and 12 BS 1110) depicted in FIG. 1 performs operations associated with time slot format indicator preemption.

[0154] like Fig.14As shown, in some aspects, process 1400 may include determining to use the SFI for a time slot based at least in part on receiving a request from a UE to use the SFI for a time slot for communication with the UE (block 1410). For example, the base station (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242) may determine to use the SFI for a time slot based at least in part on receiving a request from a UE to use the SFI for a time slot for communication with the UE, as described above.

[0155] like Fig.14 As further shown, in some aspects, process 1400 may include communicating with the UE by using the SFI for the time slot based at least in part on determining to use the SFI for the time slot (block 1420). For example, a base station (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242) may communicate with the UE by using the SFI for the time slot based at least in part on determining to use the SFI for the time slot, as described above.

[0156] Process 1400 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0157] In a first aspect, process 1400 includes transmitting an indication to the UE that the request is granted.

[0158] In a second aspect, alone or in combination with the first aspect, the indication comprises an instruction for switching beams.

[0159] In a third aspect, alone or in combination with one or more of the first and second aspects, the request is to use a first SFI for a first frequency band and a second SFI for a second frequency band.

[0160] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the request corresponds to one or more of an expected quality of service, an achievable data rate, an achievable bit rate, or a BLER with CA.

[0161] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, process 1400 includes transmitting one or more training symbols to the UE for the UE to measure interference with communications with the base station.

[0162] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the request indicates one or more non-preferred SFIs for the time slot, and process 1400 includes selecting an SFI for the time slot based at least in part on the one or more non-preferred SFIs.

[0163] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, receiving the request includes receiving the request jointly with a request to overwrite or cancel the communication mode of the code elements in the time slot.

[0164] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, receiving the request comprises receiving the request together with a CA request.

[0165] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, determining that the SFI is to be used comprises determining that the SFI is to be used based at least in part on time slot information from another base station, a TRP, or one of the RRHs.

[0166] although Fig.14 Example blocks of process 1400 are shown, but in some aspects, process 1400 may include Fig.14 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 1400. Additionally or alternatively, two or more blocks of the process 1400 may be executed in parallel.

[0167] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired by practice of the various aspects.

[0168] The following provides an overview of some aspects of the disclosure:

[0169] Aspect 1: A wireless communication method performed by a user equipment (UE), comprising: generating a request for a communication mode to overwrite or cancel a code element in a time slot of communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands used for carrier aggregation; and transmitting the request to the base station.

[0170] Aspect 2: The method of aspect 1 further comprises: receiving an indication that the request is granted; and communicating with the base station using another communication mode for the symbol in the time slot based at least in part on receiving the indication.

[0171] Aspect 3: The method of aspect 1 or 2, wherein the communication mode is an uplink communication mode, and wherein the request is to overwrite the uplink communication mode of the codeword with a downlink communication mode.

[0172] Aspect 4: The method of aspect 1 or 2, wherein the request is for the base station to prioritize the downlink communication mode over the uplink communication mode for the codeword.

[0173] Aspect 5: The method of aspect 1 or 2, wherein the communication mode is a downlink communication mode, and wherein the request is to overwrite the downlink communication mode of the codeword with an uplink communication mode.

[0174] Aspect 6: The method of aspect 1 or 2, wherein the request is for the base station to prioritize the uplink communication mode over the downlink communication mode for the codeword.

[0175] Aspect 7: The method of aspect 1 or 2, wherein the request is to cancel the communication mode of the codeword so that the codeword becomes a gap codeword or a flexible codeword.

[0176] Aspect 8: The method of any one of Aspects 1-7, wherein the request corresponds to the codeword in a plurality of time slots.

[0177] Aspect 9: The method of any one of aspects 1-8, wherein the interference is based at least in part on one or more of movement of the UE associated with Doppler fading, clutter in a channel environment, beam blocking, or a combination thereof.

[0178] Aspect 10: The method of any one of aspects 1-9, wherein transmitting the request comprises transmitting the request in uplink control information on a physical uplink channel for the time slot.

[0179] Aspect 11: A wireless communication method performed by a base station, comprising: determining a communication mode of a codeword to be overwritten or canceled based at least in part on receiving a request from a user equipment (UE) to overwrite or cancel the communication mode of a codeword in a time slot for communication with the UE; and communicating with the UE to use another communication mode for the codeword in the time slot based at least in part on determining the communication mode of the codeword to be overwritten or canceled.

[0180] Aspect 12: The method of Aspect 11 further comprises transmitting an indication to the UE that the request is granted.

[0181] Aspect 13: The method of aspect 12, wherein the communication mode is an uplink communication mode, and wherein the indication is to overwrite the uplink communication mode of the codeword with a downlink communication mode.

[0182] Aspect 14: The method of aspect 12, wherein the communication mode is a downlink communication mode, and wherein the indication is to overwrite the downlink communication mode of the codeword with an uplink communication mode.

[0183] Aspect 15: The method of aspect 11 or 12, wherein the request from the UE is used for the base station to prioritize the downlink communication mode over the uplink communication mode for the codeword.

[0184] Aspect 16: The method of aspect 11 or 12, wherein the request from the UE is used for the base station to prioritize the uplink communication mode over the downlink communication mode for the codeword.

[0185] Aspect 17: The method of aspect 11 or 12, wherein the request is to cancel the communication mode of the codeword so that the codeword becomes a gap codeword or a flexible codeword.

[0186] Aspect 18: The method of any one of aspects 11-17, wherein the request corresponds to the codeword in a plurality of time slots.

[0187] Aspect 19: A method as in any one of Aspects 11-18, wherein determining the communication mode to overwrite or cancel the codeword includes determining the communication mode to overwrite or cancel the codeword based at least in part on the movement of the UE, clutter detected by the UE, beam blocking, or a combination thereof.

[0188] Aspect 20: The method of any one of aspects 11-19, wherein receiving the request comprises receiving the request in uplink control information on a physical uplink channel for the time slot.

[0189] Aspect 21: The method of any of aspects 11-20, further comprising performing one or more of rate control or modulation and coding scheme adaptation based at least in part on the request.

[0190] Aspect 22: A wireless communication method performed by a user equipment (UE), comprising: generating a request for a time slot format indicator (SFI) for a time slot for communication with a base station based at least in part on interference in communication with the base station on one or more frequency bands used for carrier aggregation; and transmitting the request to the base station.

[0191] Aspect 23: The method of aspect 22, further comprising: receiving an indication that the request is granted; and communicating with the base station by using the SFI for the time slot based at least in part on receiving the indication.

[0192] Aspect 24: A method as in Aspect 22 or 23, wherein the indication includes an instruction for the UE to switch beams.

[0193] Aspect 25: The method of any of aspects 22-24, wherein the request is to use a first SFI for a first frequency band of the one or more frequency bands and a second SFI for a second frequency band of the one or more frequency bands.

[0194] Aspect 26: A method as in any of Aspects 22-25, wherein generating the request comprises generating the request for the SFI based at least in part on one or more of an expected quality of service, an achievable data rate, an achievable bit rate, or a block error rate in the case of carrier aggregation.

[0195] Aspect 27: The method of any of Aspects 22-26, further comprising: receiving one or more training symbols for one or more measurements of interference to communications with the base station; and selecting the SFI for the time slot based at least in part on the one or more measurements.

[0196] Aspect 28: The method of any of Aspects 22-27, wherein the request indicates one or more non-preferred SFIs for the time slot.

[0197] Aspect 29: The method of any of Aspects 22-28, wherein transmitting the request to the base station comprises transmitting the request in conjunction with a request to overwrite or cancel the communication mode of the codewords in the time slot.

[0198] Aspect 30: The method of any one of aspects 22-29, wherein the interference is based at least in part on one or more of movement or Doppler fading of the UE, clutter in a channel environment, beam blocking, or a combination thereof.

[0199] Aspect 31: The method of any one of aspects 22-30, wherein transmitting the request comprises transmitting the request together with a carrier aggregation request.

[0200] Aspect 32: A wireless communication method performed by a base station, comprising: determining to use a slot format indicator (SFI) for a time slot for communication with a user equipment (UE) based at least in part on receiving a request from the UE for the SFI to be used for the time slot; and communicating with the UE by using the SFI for the time slot based at least in part on determining to use the SFI for the time slot.

[0201] Aspect 33: The method of Aspect 32 further comprises transmitting an indication to the UE that the request is granted.

[0202] Aspect 34: The method of Aspect 32 or 33, wherein the indication comprises an instruction for switching the beam.

[0203] Aspect 35: The method of any of Aspects 32-34, wherein the request is to use the first SFI for the first frequency band and the second SFI for the second frequency band.

[0204] Aspect 36: The method of any of aspects 32-34, wherein the request corresponds to one or more of an expected quality of service, an achievable data rate, an achievable bit rate, or a block error rate with carrier aggregation.

[0205] Aspect 37: The method of any one of Aspects 32-36, further comprising transmitting one or more training symbols to the UE for the UE to measure interference with communications with the base station.

[0206] Aspect 38: The method of any of Aspects 32-37, wherein the request indicates one or more non-preferred SFIs for the time slot, and wherein the method further comprises selecting an SFI for the time slot based at least in part on the one or more non-preferred SFIs.

[0207] Aspect 39: The method of any of Aspects 32-38, wherein receiving the request comprises receiving the request in conjunction with a request to overwrite or cancel the communication mode of the codewords in the time slot.

[0208] Aspect 40: The method of any one of aspects 32-39, wherein receiving the request comprises receiving the request together with a carrier aggregation request.

[0209] Aspect 41: The method of any of Aspects 32-40, wherein determining to use the SFI comprises determining to use the SFI based at least in part on time slot information from one of another base station, a transmission reception point, or a remote radio head.

[0210] Aspect 42: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as in one or more of Aspects 1-41.

[0211] Aspect 43: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the method of one or more aspects of aspects 1-41.

[0212] Aspect 44: An apparatus for wireless communication, comprising at least one means for performing the method of one or more aspects of aspects 1-41.

[0213] Aspect 45: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more aspects of aspects 1-41.

[0214] Aspect 46: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more aspects of aspects 1-41.

[0215] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. "Software" should be broadly interpreted to mean instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and / or functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms. As used herein, a processor is implemented with hardware, firmware, and / or a combination of hardware and software.

[0216] It will be apparent that the systems and / or methods described herein can be implemented in different forms of hardware, and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit the various aspects. Thus, the operation and behavior of these systems and / or methods are described herein without reference to specific software code - it is understood that software and hardware can be designed to implement these systems and / or methods based at least in part on the description herein.

[0217] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0218] Although specific feature combinations are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features can be combined in a manner not specifically described in the claims and / or not disclosed in the specification. Although each dependent claim listed below can be directly subordinate to only one claim, the disclosure of various aspects includes that each dependent claim is combined with each other claim in this group of claims. As used herein, the phrase quoting "at least one of" a column of items refers to any combination of these items, including single members. As an example, "at least one of a, b or c" is intended to cover: a, b, c, ab, ac, bc and abc, and any combination with multiple identical elements (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc and ccc, or any other sorting of a, b and c).

[0219] Elements, actions or instructions used herein should not be interpreted as key or necessary unless explicitly described as such. Moreover, as used herein, the articles "one" and "a" are intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "the" is intended to include one or more items quoted in conjunction with the article "the", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set (set)" and "group" are intended to include one or more items (for example, related items, non-related items, combinations of related items and non-related items, etc.), and can be used interchangeably with "one or more". In the occasion of intending to have only one project, the phrase "only one" or similar language is used. Moreover, as used herein, the terms "have", "contain", "include" etc. are intended to be open terms. In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise explicitly stated. Furthermore, as used herein, the term "or" when used in a sequence is intended to be inclusive and may be used interchangeably with "and / or" unless explicitly stated otherwise (e.g., when used in conjunction with "either of" or "only one of").

Claims

1. A user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors configured to: generating a request for a communication pattern to overwrite symbols in a time slot for communications with a base station based at least in part on interference in communications with the base station on one or more frequency bands used for carrier aggregation, wherein the communication mode is an uplink communication mode and the request is to overwrite the uplink communication mode of the symbol with a downlink communication mode, or wherein the communication mode is a downlink communication mode, and the request is to overwrite the downlink communication mode of the symbol with an uplink communication mode; and The request is transmitted to the base station.

2. The UE according to claim 1, wherein: The one or more processors are further configured to: receiving an indication that the request is granted; and Another communication mode is used for the symbols in the time slot to communicate with the base station based at least in part on receiving the indication.

3. The UE according to claim 1, wherein: The request is for the base station to prioritize a downlink communication mode over an uplink communication mode for the symbol.

4. The UE according to claim 1, wherein: The request is for the base station to prioritize an uplink communication mode over a downlink communication mode for the symbol.

5. The UE according to claim 1, wherein: The request corresponds to the symbols in a plurality of time slots.

6. The UE according to claim 1, wherein: The interference is based at least in part on one or more of movement of the UE associated with Doppler fading, clutter in a channel environment, beam blocking, or a combination thereof.

7. The UE according to claim 1, wherein: Transmitting the request includes transmitting the request in uplink control information on a physical uplink channel for the time slot.

8. A base station for wireless communication, comprising: Memory; as well as One or more processors configured to: determining a communication mode to overwrite the symbols based at least in part on receiving a request to overwrite the communication mode of symbols in a time slot for communications with the UE, wherein the communication mode is an uplink communication mode and the request is to overwrite the uplink communication mode of the symbol with a downlink communication mode, or wherein the communication mode is a downlink communication mode, and the request is to overwrite the downlink communication mode of the symbol with an uplink communication mode; and Based at least in part on determining that the communication mode is to overwrite the symbol, another communication mode is used for the symbol in the time slot to communicate with the UE.

9. The base station of claim 8, further comprising transmitting an indication that the request is granted.

10. The base station according to claim 8, wherein: The request from the UE is for the base station to prioritize a downlink communication mode over an uplink communication mode for the symbol.

11. The base station according to claim 8, wherein: The request from the UE is for the base station to prioritize an uplink communication mode over a downlink communication mode for the symbol.

12. The base station according to claim 8, wherein: The request corresponds to the symbols in a plurality of time slots.

13. The base station according to claim 8, wherein: Determining the communication mode to overwrite the symbol includes determining the communication mode to overwrite the symbol based at least in part on movement of the UE, clutter detected by the UE, beam blocking, or a combination thereof.

14. The base station according to claim 8, wherein: Receiving the request includes receiving the request in uplink control information on a physical uplink channel for the time slot.

15. The base station of claim 8, further comprising performing one or more of rate control or modulation and coding scheme adaptation based at least in part on the request.

16. A wireless communication method performed by a user equipment (UE), comprising: generating a request for a communication pattern to overwrite symbols in a time slot for communications with a base station based at least in part on interference in communications with the base station on one or more frequency bands used for carrier aggregation, wherein the communication mode is an uplink communication mode and the request is to overwrite the uplink communication mode of the symbol with a downlink communication mode, or wherein the communication mode is a downlink communication mode, and the request is to overwrite the downlink communication mode of the symbol with an uplink communication mode; and The request is transmitted to the base station.

17. The method of claim 16, further comprising: receiving an indication that the request is granted; as well as Another communication mode is used for the symbols in the time slot to communicate with the base station based at least in part on receiving the indication.

18. The method of claim 16, wherein: The request is for the base station to prioritize a downlink communication mode over an uplink communication mode for the symbol.

19. The method of claim 16, wherein: The request is for the base station to prioritize an uplink communication mode over a downlink communication mode for the symbol.

20. A wireless communication method performed by a base station, comprising: determining a communication mode to overwrite the symbols based at least in part on receiving a request to overwrite the communication mode of symbols in a time slot for communications with the UE, wherein the communication mode is an uplink communication mode and the request is to overwrite the uplink communication mode of the symbol with a downlink communication mode, or wherein the communication mode is a downlink communication mode, and the request is to overwrite the downlink communication mode of the symbol with an uplink communication mode; and Based at least in part on determining to overwrite the communication mode of the symbol, communicating with the UE to use another communication mode for the symbol in the time slot.

21. The method of claim 20, further comprising transmitting an indication that the request was granted.

Images