Management of antenna switching based on the sounding reference symbol antenna switching configuration

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may: receive an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first radio access technology (RAT), and the dual connectivity antenna configuration allows communication via the first RAT and the second RAT; determine the number of communication chains associated with the first RAT that are affected by the antenna switching process of the second RAT based at least in part on the antenna switch selection; and selectively allow reconfiguration of the dual connectivity antenna configuration according to the antenna switch selection based at least in part on the number of communication chains. Many other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 979,263, filed on February 20, 2020, entitled “MANAGEMENT OF ANTENNASWITCHING ACCORDING TO A SOUNDING REFERENCE SYMBOL ANTENNA SWITCHING CONFIGURATION,” and U.S. Non-Provisional Patent Application No. 17 / 249,063, filed on February 18, 2021, entitled “MANAGEMENT OF ANTENNA SWITCHING ACCORDING TO A SOUNDING REFERENCE SYMBOL ANTENNA SWITCHING CONFIGURATION,” which are expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure generally relate to wireless communications and techniques and apparatus for managing antenna switching based on a sounding reference symbol (SRS) antenna switching configuration. Background Art

[0004] Wireless communication systems are widely used to provide various telecommunication services, such as telephone, video, data, information transceiving and broadcasting. 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, etc.). 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 released by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include multiple base stations (BSs) that may support communications for multiple user equipment (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, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at municipal, national, regional and even global levels. NR, which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband Internet access by: improving spectrum efficiency; reducing costs; improving services; utilizing new spectrum; and better integrating with other open standards that use orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL) and support beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR and other radio access technologies remain useful. Summary of the invention

[0007] In some aspects, a method of wireless communications performed by a user equipment (UE) may include: identifying an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first radio access technology (RAT), and the dual connectivity antenna configuration allows communication via the first RAT and a second RAT; determining a number of communication chains associated with the first RAT that are affected by an antenna switching process of a second RAT based at least in part on the antenna switch selection; and selectively allowing reconfiguration of the dual connectivity antenna configuration based at least in part on the number of communication chains.

[0008] In some aspects, a method of wireless communications performed by a UE may include: determining an antenna configuration that causes a highest number of communication interruptions for a first RAT during an antenna switching process for a second RAT relative to multiple possible antenna configurations; and preventing selection of the antenna configuration in association with an antenna switching request associated with the first RAT.

[0009] In some aspects, a UE for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: identify an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first RAT, and the dual connectivity antenna configuration allows communication via the first RAT and a second RAT; determine, based at least in part on the antenna switch selection, a number of communication chains associated with the first RAT that are affected by an antenna switching process of the second RAT; and selectively allow reconfiguration of the dual connectivity antenna configuration according to the antenna switch selection based at least in part on the number of communication chains.

[0010] In some aspects, a UE for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: determine an antenna configuration that causes a highest number of communication interruptions for a first RAT during an antenna switching process for a second RAT relative to a plurality of possible antenna configurations; and refrain from selecting the antenna configuration in association with an antenna switching request associated with the first RAT.

[0011] 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: identify an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first RAT, and the dual connectivity antenna configuration allows communication via the first RAT and a second RAT; determine, based at least in part on the antenna switch selection, a number of communication chains associated with the first RAT that are affected by an antenna switching process of the second RAT; and selectively allow reconfiguration of the dual connectivity antenna configuration according to the antenna switch selection based at least in part on the number of communication chains.

[0012] 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: determine an antenna configuration that causes a highest number of communication interruptions for a first RAT during an antenna switching process for a second RAT relative to a plurality of possible antenna configurations; and prevent selection of the antenna configuration in association with an antenna switching request associated with the first RAT.

[0013] In some aspects, an apparatus for wireless communications may include: components for identifying an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first RAT and the dual connectivity antenna configuration allows communication via the first RAT and a second RAT; components for determining, based at least in part on the antenna switch selection, a number of communication chains associated with the first RAT that are affected by an antenna switching process of a second RAT; and components for selectively allowing reconfiguration of the dual connectivity antenna configuration based at least in part on the number of communication chains.

[0014] In some aspects, an apparatus for wireless communications may include: components for determining an antenna configuration that causes a highest number of communication interruptions for a first RAT during an antenna switching process for a second RAT relative to a plurality of possible antenna configurations; and components for preventing selection of the antenna configuration in association with an antenna switching request associated with the first RAT.

[0015] 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 substantially as described herein with reference to and as illustrated in the drawings and description.

[0016] The features and technical advantages of the examples according to the present disclosure have been summarized quite broadly above so that the following detailed description can be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples can be easily used as the basis for modifying or designing other structures for achieving the same purpose of the present disclosure. These equivalent structures do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the features of the concepts disclosed herein, their organization and method of operation, and the associated advantages will be better understood from the following description. Each of the accompanying drawings is provided for the purpose of illustration and description, rather than as a definition of the limitation of the claims.

[0017] Although various aspects are described in the present disclosure by the description of some examples, it will be understood by those skilled in the art that these aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, certain aspects can be implemented via an integrated chip embodiment or other non-module component-based device (e.g., end-user device, vehicle, communication device, computing device, industrial device, retail / purchase device, medical device, or device enabling artificial intelligence). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, or system-level components. The device incorporating the described aspects and features may include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals may include multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders, or summers). The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements, or end-user devices of different sizes, shapes, and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order that the above-mentioned features of the present disclosure may be understood in detail, a more specific description briefly summarized above may be obtained by reference to various aspects, some of which are shown in the accompanying drawings. However, it should be noted that the accompanying drawings illustrate only certain typical aspects of the present disclosure and therefore should not be considered as limiting the scope thereof, as the description may admit of other equivalent aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0019] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0020] Figure 2 is a diagram illustrating an example of a base station communicating with a UE in a wireless network according to the present disclosure.

[0021] Figure 3 is a diagram illustrating an example of dual connectivity according to the present disclosure.

[0022] Figure 4 5 is a diagram illustrating an example associated with management of antenna switching according to a sounding reference symbol (SRS) antenna switching configuration according to the present disclosure.

[0023] Figure 6 8 is a diagram illustrating an example configuration of a dual connectivity antenna configuration according to the present disclosure.

[0024] Fig. 910 is a diagram illustrating an example process associated with management of antenna switching according to an SRS antenna switching configuration according to the present disclosure.

[0025] Fig.11 is a block diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0026] The various aspects of the present disclosure will be 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 construed as being limited to any specific structure or function presented in the present disclosure. On the contrary, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed 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 implemented independently of any other aspect of the present disclosure or combined 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 a device or method that is practiced using other structures, functions, or structures and functions other than the various aspects of the present disclosure set forth herein or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be embodied by one or more elements of the claims.

[0027] 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 may be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0028] It should be noted that although 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 applicable to other RATs, such as 3G RATs, 4G RATs, and / or RATs beyond 5G (e.g., 6G).

[0029] Figure 1is a diagram showing an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network and / or an LTE network, etc. The wireless network 100 may include a plurality of 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, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. 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.

[0030] 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., a radius of several kilometers) and may allow unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). 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, 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. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5G NB", and "cell" may be used interchangeably herein.

[0031] 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 through various types of backhaul interfaces (such as direct physical connections or virtual networks) using any suitable transport network.

[0032] 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 data to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions of other UEs. Figure 1 In the example shown, 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, relay base station, relay, or the like.

[0033] 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, a relay BS, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 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).

[0034] A network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0035] UE 120 (e.g., 120a, 120b, 120c) can be dispersed throughout the wireless network 100, and each UE can be stationary or mobile. UE can also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE can 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 computer, 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-mounted component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0036] Some UEs may be considered as machine type communication (MTC) 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 a connection 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 customer premise equipment (CPE). UE 120 may be included in a housing that houses components of UE 120 (such as a processor component and / or a memory component). In some aspects, a processor component may be coupled to a memory component. For example, a processor component (e.g., one or more processors) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled to a memory component (e.g., a memory).

[0037] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0038] 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 for communicating 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 performed by base station 110 as described elsewhere herein.

[0039] The devices of the wireless network 100 can communicate using an electromagnetic spectrum, which can be subdivided into various categories, frequency bands, channels, etc. based on frequency or wavelength. For example, the devices of the wireless network 100 can communicate using an operating band having a first frequency range (FR1), and / or can communicate using an operating band having a second frequency range (FR2), the first frequency range can be from 410 MHz to 7.125 GHz, and the second frequency range can be from 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 different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as a "millimeter wave" band by the International Telecommunication Union (ITU). Thus, unless otherwise specifically stated, it should be understood that the terms "sub-6 GHz" and the like (if used herein) can 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) can 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 can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0040] As mentioned above, providing Figure 1 As an example. Other examples may differ from Figure 1 Examples described.

[0041] Figure 2 is a diagram illustrating an example 200 of a base station 110 communicating with a UE 120 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.

[0042] 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, and / or 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) or 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, if applicable, and may provide T output symbol streams to T modulators (MOD) 232a through 232t. Each modulator 232 may process a corresponding 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.

[0043] At the UE 120, antennas 252a to 252r may receive downlink signals from the 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. The MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for the UE 120 to the data sink 260, and provide decoded control information and system information to the 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 a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a channel quality indicator (CQI) parameter, etc. In some aspects, one or more components of the UE 120 may be included in the housing 284.

[0044] 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.

[0045] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays, etc., or may be included in 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 transmitting and / or receiving components (such as Figure 2 One or more antenna elements of one or more components).

[0046] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). 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 (if 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 antennas 252, modulators and / or demodulators 254, MIMO detectors 256, receive processors 258, transmit processors 264, and / or TX MIMO processors 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 4-10 described.

[0047] 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 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and provide 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 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 4-10 described.

[0048] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component of the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or the like may perform one or more techniques associated with management of antenna switching according to a sounding reference symbol (SRS) antenna switching configuration, as described in more detail elsewhere herein. Figure 2 Any other component of may execute or direct e.g. Fig. 9 The process of 900 Fig.10 1000 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, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly or after compilation, conversion and / or interpretation), the one or more instructions 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 1000 and / or operations of other processes as described herein. In some aspects, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0049] In some aspects, UE 120 may include: components for identifying an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first RAT and the dual connectivity antenna configuration allows communication via the first RAT and the second RAT; components for determining, based at least in part on the antenna switch selection, a number of communication chains associated with the first RAT that are affected by an antenna switching process of the second RAT; and / or components for selectively allowing reconfiguration of the dual connectivity antenna configuration according to the antenna switch selection based at least in part on the number of communication chains. In some aspects, these components 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, receive processor 258, etc.

[0050] In some aspects, the UE 120 may include: means for determining that the antenna configuration, relative to a plurality of possible antenna configurations, causes a highest number of communication interruptions for the first RAT during an antenna switching process for the second RAT; and / or means for preventing the antenna configuration from being selected in association with an antenna switching request associated with the first RAT. In some aspects, these means may include combining 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, receive processor 258, etc.

[0051] Although Figure 2 The blocks in the 2000 and 2000 are illustrated as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality 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.

[0052] As mentioned above, providing Figure 2 As an example. Other examples may differ from Figure 2 Examples described.

[0053] Figure 3 is a diagram illustrating an example 300 of dual connectivity according to the present disclosure. Figure 3 The example shown is for Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) - NR Dual Connectivity (ENDC) mode. In ENDC mode, UE 120 communicates using LTE RAT on a primary cell group (MCG), and UE 120 communicates using NR RAT on a secondary cell group (SCG). However, the various aspects described herein may be applied to ENDC mode (e.g., where the MCG is associated with the LTE RAT and the SCG is associated with the NR RAT), NR-E-UTRA Dual Connectivity (NEDC) mode (e.g., where the MCG is associated with the NR RAT and the SCG is associated with the LTE RAT), NR Dual Connectivity (NRDC) mode (e.g., where the MCG is associated with the NR RAT and the SCG is also associated with the NR RAT), or another dual connectivity mode (e.g., where the MCG is associated with the first RAT and the SCG is associated with one of the first RAT or the second RAT). ENDC mode is sometimes referred to as NR or 5G non-standalone (NSA) mode. Thus, as used herein, “dual connectivity mode” may refer to an ENDC mode, a NEDC mode, an NRDC mode, and / or another type of dual connectivity mode.

[0054] like Figure 3As shown, UE 120 can communicate with both eNBs (e.g., 4G base station 110) and gNBs (e.g., 5G base station 110), and the eNBs and gNBs can communicate (e.g., directly or indirectly) with a 4G / LTE core network, which is shown as an evolved packet core (EPC) including a mobility management entity (MME), a packet data network gateway (PGW), a serving gateway (SGW), and / or other devices. Figure 3 In the embodiment, PGW and SGW are collectively shown as P / SGW. In some aspects, the eNB and gNB may be co-located at the same base station 110. In some aspects, the eNB and gNB may be included in different base stations 110 (e.g., may not be in the same location).

[0055] like Figure 3 As further shown, in some aspects, a wireless network enabling operation in 5G NSA mode may enable such operation using a primary cell group (MCG) for a first RAT (e.g., LTE RAT or 4G RAT) and a secondary cell group (SCG) for a second RAT (e.g., NR RAT or 5G RAT). In this case, the UE 120 may communicate with the eNB via the MCG and may communicate with the gNB via the SCG. In some aspects, the MCG may anchor the network connection between the UE 120 and the 4G / LTE core network (e.g., for mobility, coverage, and / or control plane information), and the SCG may be added as an additional carrier to increase throughput (e.g., for data traffic and / or user plane information). In some aspects, the gNB and the eNB may not transmit user plane information between each other. In some aspects, a UE 120 operating in dual connectivity mode may be connected to an LTE base station 110 (e.g., an eNB) and an NR base station 110 (e.g., a gNB) at the same time (e.g., in the case of ENDC or NEDC), or may be connected to one or more base stations 110 using the same RAT at the same time (e.g., in the case of NRDC). In some aspects, an MCG may be associated with a first frequency band (e.g., a sub-6 GHz band and / or a FR1 band), and an SCG may be associated with a second frequency band (e.g., a millimeter wave band and / or a FR2 band).

[0056] UE 120 may communicate via MCG and SCG using one or more radio bearers (e.g., data radio bearers (DRBs) and / or signaling radio bearers (SRBs)). For example, UE 120 may send or receive data via MCG and / or SCG using one or more DRBs. Similarly, UE 120 may send or receive control information (e.g., radio resource control (RRC) information and / or measurement reports) using one or more SRBs. In some aspects, a radio bearer may be dedicated to a specific cell group (e.g., a radio bearer may be an MCG bearer or an SCG bearer). In some aspects, a radio bearer may be a split radio bearer. Split radio bearers may be split in the uplink and / or downlink. For example, a DRB may be split on the downlink (e.g., UE 120 may receive downlink information of an MCG or SCG in a DRB) without being split on the uplink (e.g., the uplink may not be split from the primary path to the MCG or SCG, such that UE 120 transmits in the uplink only on the primary path). In some aspects, the DRBs may be split on the uplink with the primary path to the MCG or SCG. The DRBs split in the uplink may use the primary path to send data until the size of the uplink transmit buffer meets the uplink data split threshold. If the uplink transmit buffer meets the uplink data split threshold, the UE 120 may use the DRBs to send data to the MCG or SCG.

[0057] As mentioned above, providing Figure 3 As an example. Other examples may differ from Figure 3 Examples described.

[0058] In some cases, the UE may include an antenna configuration (e.g., a MIMO configuration) that implements dual connectivity via multiple different RATs, which is referred to herein as a dual connectivity antenna configuration. For example, the antenna configuration may enable the UE's LTE communications and NR communications to share the same set of antennas and / or cross switches (and / or other hardware components of the UE). Each RAT may perform various operations and / or processes that involve switching the configuration of the dual connectivity antenna configuration so that the communication chain of the RAT is changed (e.g., via adjustment of the cross switch) to send or receive communications via different antennas of the antenna configuration. For example, the LTE process may involve detecting an antenna of a dual connectivity antenna configuration that is more suitable for UL communication, and requesting (e.g., via antenna switching diversity (Asdiv) selection and / or process) or initiating reconfiguration of the dual connectivity antenna configuration. As another example, the NR process may involve an SRS antenna switching process that involves sending an SRS via different transmit antennas of the dual connectivity antenna configuration to test the channel quality of the antenna. Depending on the handover performed, such operations and / or processes result in outages (e.g., interruptions or aborts) of communication chains (e.g., transmit (Tx) chains and / or receive (Rx) chains) of one or both of the RATs due to the physical configuration of the hardware being changed. The outages of the communication chains may result in lost traffic data and, correspondingly, in wasted resources associated with sending, receiving, and / or processing communications associated with the lost traffic data. In addition, relatively more frequent outages may result in radio link failures of one of the RATs (e.g., LTE in the above example) due to frequent interruptions of the Tx chain and / or Rx chain of the RAT.

[0059] Some aspects described herein manage antenna switching for a dual connectivity antenna configuration based at least in part on an analysis of the impact of SRS antenna switching according to an antenna switching configuration. For example, a controller of a UE (e.g., controller / processor 280) may determine whether to perform antenna switching based on the Asdiv Tx antenna based at least in part on the number of communication chains that will be affected (e.g., will experience interruption) by an SRS antenna switching process using Asdiv Tx antenna selection. Thus, if the number meets a threshold number of allowable communication chains that may be interrupted (e.g., which may be configured or established based on a dual connectivity antenna configuration, based on a downlink rank state of the UE, etc.), the controller may allow antenna switching to be performed. On the other hand, if the number does not meet the threshold, antenna switching may be blocked to prevent outages (e.g., or an increase in outages) from occurring during an SRS antenna switching process under Asdiv Tx antenna selection.

[0060] In some aspects, the set or defined threshold number of allowable communication links that may be interrupted may affect the maximum downlink rank state associated with the UE (and / or be based on the maximum downlink rank). For example, the sum of the threshold and the maximum downlink rank state may be based on the total number of antennas (e.g., antennas of a MIMO antenna configuration) of a dual connectivity antenna configuration, a crossbar switch configuration of the dual connectivity antenna configuration, etc.

[0061] In this way, according to various aspects of the present disclosure, based at least in part on an analysis of the SRS antenna switching process under certain configurations of the dual connectivity antenna configuration, the controller can save computing resources, communication resources (e.g., communication resources of the physical uplink shared channel) and / or network resources.

[0062] Figure 4 4 is a diagram illustrating an example 400 associated with management of antenna switching according to an SRS antenna switching configuration according to the present disclosure. Figure 4 As shown, example 400 includes communications between BS 110 and UE 120 .

[0063] In example 400, UE 120 includes a controller, a dual connectivity antenna configuration, a switching structure, and multiple antennas (shown as Ant 0, Ant 1, and Ant 2 to Ant K), the dual connectivity antenna configuration includes one or more Tx chains of dual connectivity transceivers, one or more Rx chains of dual connectivity transceivers. The dual connectivity transceiver may include a receiving processor (e.g., receiving processor 258) and / or a transmitting processor (e.g., transmitting processor 264). In some aspects, the switching structure may include multiple cross switches that are communicatively coupled (e.g., in a cascade configuration) to form a switching structure. In some aspects, BS 110 and UE 120 may be included in a wireless network (such as wireless network 100). BS 110 and UE 120 may communicate via a wireless access link, which may include an uplink and a downlink.

[0064] like Figure 4 As further shown and indicated by reference numeral 410, UE 120 determines one or more dual connectivity antenna configurations for dual connectivity antennas of UE 120. For example, a controller of UE 120 may determine a plurality of possible configurations of dual connectivity antennas based on a combination of which Tx chains and Rx chains (collectively referred to herein as "communication chains") are communicatively coupled to which antennas of the dual connectivity antennas. Thus, UE 120 may iteratively simulate various combinations of Tx chains / Rx chains transmitted and / or received through various combinations of antennas to identify the plurality of possible configurations. In some embodiments, the plurality of possible configurations may correspond to a plurality of possible Asdiv selections from BS 110 (and / or may be determined by the controller).

[0065] like Figure 4 As further shown and indicated by reference numeral 420, the UE 120 determines the interruption of the communication chains for the handover process according to the configuration. For example, as shown, for the first configuration (Config-0) and the first handover process (Handover Process 1), the controller can determine that 3 communication chains will be affected by the first handover process. In some embodiments, the UE 120 can determine the interruption of a specific type of communication chain (e.g., the interruption of a specific Rx chain and / or the interruption of a specific Tx chain). As another example, for the second configuration (Config-1) and the first handover process, the controller can determine that 2 communication chains will be interrupted, as described elsewhere herein.

[0066] Based on the switching process that affects the configuration of the communication chain, an interruption of the communication chain may occur. For example, as a result of the switching process, a communication chain that switches from one antenna to another antenna may experience an interruption. In addition or alternatively, if the switching process causes the first RAT and the second RAT to share the same antenna of the dual connectivity antenna, the communication chain may experience an interruption of the switching process (or may be affected by the switching process). The first RAT may include LTE technology, and the second RAT may include NR technology (e.g., in ENDC mode). In some aspects, both the first RAT and the second RAT may be NR technology (e.g., in NRDC mode).

[0067] like Figure 4 As further shown and indicated by reference numeral 430, the UE 120 allows or blocks one or more Asdiv selections based on the corresponding number of communication link interruptions. For example, as described elsewhere herein, the Asdiv selections may correspond to one or more configurations of the dual connectivity antenna configuration. The one or more Asdiv selections may be received from the BS 110 (e.g., in a request to reconfigure the dual connectivity antenna configuration) and / or received or requested from an operating system (or application) of the UE 120.

[0068] UE 120 can determine whether to allow or prevent Asdiv selection based on the comparison of the number of affected communication chains with the threshold number of permissible communication chain interruptions. The threshold number of allowed communication chain interruptions can correspond to the number of communication chain interruptions that allow the dual connectivity antenna configuration to be adjusted according to the switching process. For example, as shown in the figure, the first switching process (e.g., SRS antenna switching process or other types of NR switching processes) can allow up to two communication chain interruptions, while the second switching process can allow up to three communication chain interruptions (e.g., LTE antenna switching process). Therefore, in example 400, UE120 can allow Asdiv selection of the second configuration (Config-1) because the first switching process will result in the number of communication chain interruptions that meet the threshold number of permissible communication chain interruptions when executed by UE 120. UE 120 can prevent Asdiv selection of the first configuration (Config-0) because the threshold number of permissible communication chain interruptions will be exceeded when UE 120 is required to perform the first switching process.

[0069] The threshold number of permissible communication chain interruptions may be a fixed threshold value that may be set according to default and / or user settings. Additionally or alternatively, the threshold value may be dynamically adjusted based on one or more parameters. For example, the threshold value may correspond to and / or be based on the current downlink rank state of UE 120, the MIMO antenna capability of UE 120, and / or the configuration dual connectivity mode (e.g., ENDC mode, NEDC mode, and / or NRDC mode) of UE 120, etc. The downlink rank state may be determined and / or identified within the CSI according to the channel state information (CSI) received from BS110. In some embodiments, the threshold number of permissible communication chain interruptions may be related to the number of other interruptions caused by the switching process. For example, the threshold value may correspond to the average value of the determined number of interruptions of the combination of the dual connectivity antenna configuration and the switching process. Additionally or alternatively, UE 120 may determine that the threshold number of permissible communication chain interruptions of the configuration and switching process will be exceeded based on the switching process that causes (or involves) the highest number of communication chain interruptions.

[0070] In some aspects, a threshold (e.g., as a fixed threshold) number of communication chain interruptions can set or define a maximum downlink rank state for UE 120. In this case, UE 120 can determine the maximum downlink rank state based on a fixed threshold (e.g., configured according to a default setting, a user setting, and / or a setting defined by a handover process) by subtracting the total number of possible Rx chains from the threshold. Thus, if UE 120 is a UE with 4-Rx communication chain capability on LTE and the fixed threshold for allowable communication chain interruptions is 2, UE 120 can notify BS 110 that UE 120 has a current maximum downlink rank state of 2 (for the maximum downlink rank state, 4 Rx chains-2 allowable interruptions=2).

[0071] As mentioned above, providing Figure 4 As an example. Other examples may differ from Figure 4 Examples described.

[0072] Figure 5 is a diagram illustrating an example 500 associated with management of antenna switching according to an SRS antenna switching configuration according to the present disclosure. Figure 5 As shown, example 500 includes communications between BS 110 and UE 120 , and UE 120 may be similarly configured as described above in conjunction with example 400 .

[0073] like Figure 5 As shown and indicated by reference numeral 510, UE 120 may receive a request for LTE Asdiv selection. For example, the antenna switch selection may correspond to the LTE Asdiv selection corresponding to Config-0. As shown, the antenna switch selection may be received from BS 110, although UE 120 may initiate or obtain the antenna switch selection from an operating system or application of UE 120.

[0074] like Figure 5 As further shown in FIG. 1 and reference numeral 520, UE 120 determines the number of communication chains affected by the SRS antenna switching process. The SRS antenna switching process may be associated with the NR RAT, as described elsewhere herein.

[0075] like Figure 5 As further shown and indicated by reference numeral 530, UE 120 may prevent Asdiv selection based on the number of communication link interruptions that meet a threshold number of allowable communication link interruptions. Figure 4 Similarly described, UE 120 may block antenna switch selection according to Config-0 because the number of communication link interruptions (3) that would be caused by the SRS antenna switching process exceeds the threshold number of allowable interruptions (2).

[0076] like Figure 5 As further shown and indicated by reference numeral 540, UE 120 may provide an alternative antenna switch selection to BS 110. For example, based on blocking the Asdiv selection of Config-0, UE 120 may indicate an Asdiv selection of a second configuration (Config-1) because under the second configuration, the SRS switching process will result in a number of communication link interruptions (2) that meets a threshold number of allowable communication link interruptions (2). In some aspects, UE 120 may select an Asdiv selection (and / or a corresponding configuration) that results in a minimum number of interruptions among multiple possible configurations of the dual connectivity antenna configuration.

[0077] In some embodiments, UE 120 may report information to BS 110 based on a fixed threshold of allowable communication link interruption. For example, UE 120 may report a maximum downlink rank state. Additionally or alternatively, UE 120 may report the MIMO capability of the dual connectivity antenna configuration of UE 120 (e.g., based on the number of antennas of the MIMO configuration, such as DL 2x2 configuration, DL 4x4 configuration, etc.). More specifically, UE 120 may indicate (e.g., in RRC information) the number of spatial multiplexing layers in the downlink direction for one or more bandwidths (and / or bandwidth classes).

[0078] As mentioned above, providing Figure 5 As an example. Other examples may differ from Figure 5 Examples described.

[0079] Figure 6 8 is a diagram showing an example configuration of a dual connectivity antenna configuration according to the present disclosure. Figure 6 A UE (e.g., UE 120) with a corresponding dual connectivity antenna configuration of -8 may use LTE Band 3 (B3) (e.g., a frequency division duplex (FDD) band) and NR Band N41 (N41) (e.g., a time division duplex (TDD) band).

[0080] exist Figure 6In example 600, a diagram of a dual connectivity antenna configuration (Config-A) that may be included within a UE (e.g., UE 120) is shown. Config-A includes four antennas (Ant 0, Ant 1, Ant 2, and Ant 3) and two cross switches XSW-1 and XSW-2. The UE may determine that an Asdiv selection involving a B3 Tx switch to Ant 0 of Config-A (e.g., according to an LTE Asdiv Tx antenna selection) will cause an NR SRS antenna switching process (involving N41 Tx via Ant 0) to affect the following LTE communication chains of Config-A: B3 Tx (because NR SRS will share the same antenna, Ant 0) and B3 Rx 0 (because Rx 0 shares a communication chain with B3 Tx).

[0081] according to Figure 6 For example, if the threshold number of allowable LTE Rx chain interruptions is 2 or less, the controller (e.g., controller / processor 280) will allow reconfiguration according to Config-A. However, if the threshold number of allowable LTE communication chain interruptions (including Tx and Rx) is 2, the controller may refuse to switch to Config-A (e.g., refuse LTE Asdiv Tx antenna selection) due to the impact of the NR SRS antenna switching process.

[0082] exist Figure 7 In example 700 of , a diagram of a dual connectivity antenna configuration (Config-B) that may be included within a UE (e.g., UE 120) is shown. Config-B includes four antennas (Ant 0, Ant 1, Ant 2, and Ant 3) and two cross switches XSW-1 and XSW-2. The UE may determine that an Asdiv selection involving a B3 Tx switch of Config-B to Ant 1 (e.g., according to an LTE Asdiv Tx antenna selection) will cause an NR SRS antenna switching process (involving N41 Tx via Ant 1) to affect the following LTE communication chains of Config-B: B3 Rx 1 (because NR SRS will share the same antenna, Ant 1), B3 Rx 2 (because B3Rx 2 shares a communication chain with N41 Tx), and B3 Rx 3 (because NR SRS will share the same antenna, Ant 1).

[0083] according to Figure 7For example, if the threshold number of allowable LTE Rx chain interruptions is 2 or less, the controller (e.g., controller / processor 280) will prevent reconfiguration according to Config-B. However, if the threshold number of allowable LTE communication chain interruptions (including Tx and Rx) is 3 or more, the controller may prevent switching to Config-B (e.g., prevent LTE Asdiv Tx antenna selection) due to the impact of the NR SRS antenna switching process.

[0084] exist Figure 8 In example 800 of , a diagram of a dual connectivity antenna configuration (Config-C) that may be included within a UE (e.g., UE 120) is shown. Config-C includes five antennas (Ant 0, Ant 1, Ant 2, Ant 3, and Ant 4) and two cross switches XSW-1 and XSW-3 (which may include more switches than XSW-2 of the above example). The UE may determine that an Asdiv selection involving a B3 Tx switch to Ant 0 of Config-C (e.g., according to an LTE Asdiv Tx antenna selection) will cause an NR SRS antenna switching process (involving N41 Tx via Ant 1) to affect the following LTE communication chains of Config-C: B3 Tx (because NR SRS will share the same antenna, Ant 0) and B3 Rx 0 (because Rx 0 shares a communication chain with B3 Tx).

[0085] Thus, as shown in comparison to Config-A of example 600, the increased number of antennas and the size of the crossbar switch XSW-3 (relative to the crossbar switch XSW-2) in Config-C enable less disruption of the communication chain than Config-A. More specifically, Config-C implements an Asdiv selection similar to Config-A without causing disruption to B3Rx2 as would be caused using Config-A.

[0086] Fig. 9 is a diagram illustrating an example process 900 performed, for example, by a UE in accordance with the present disclosure. Example process 900 is an example of a UE (eg, UE 120) performing operations associated with management of antenna switching according to a sounding reference symbol antenna switching configuration.

[0087] like Fig. 9 As shown, in some aspects, process 900 may include receiving an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first radio access technology (RAT), and the dual connectivity antenna configuration allows communication via the first RAT and a second RAT (block 910). Fig.11The receiving component 1102 shown in ) can receive an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first RAT, and the dual connectivity antenna configuration allows communication via the first RAT and the second RAT, as described above. In some aspects, the antenna switch selection is associated with the first RAT, and the dual connectivity antenna configuration allows communication via the first RAT and the second RAT.

[0088] like Fig. 9 As further shown in FIG. 9 , in some aspects, process 900 may include determining, based at least in part on the antenna switch selection, a number of communication chains associated with the first RAT that are affected by an antenna switching process of the second RAT (block 920). Fig.11 Illustrated determining component 1108) can determine a number of communication chains associated with the first RAT that are affected by an antenna switching process of the second RAT based at least in part on the antenna switch selection, as described above.

[0089] like Fig. 9 As further shown, in some aspects, process 900 may include selectively allowing reconfiguration of the dual connectivity antenna configuration selected according to the antenna switch based at least in part on the number of communication chains (block 930). Fig.11 The selection component 1110 shown can selectively allow reconfiguration of the dual connectivity antenna configuration according to the antenna switch selection based at least in part on the number of communication chains, as described above.

[0090] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0091] In a first aspect, antenna switch selection is associated with an antenna switching diversity selection procedure for a first RAT.

[0092] In a second aspect, alone or in combination with the first aspect, the antenna switching procedure comprises an SRS antenna switching procedure.

[0093] In a third aspect, alone or in combination with one or more of the first and second aspects, a communication chain of the number of communication chains includes at least one of a receive chain of the first RAT or a transmit chain of the first RAT.

[0094] In a fourth aspect, alone or in combination with one or more of the first to third aspects, communication chains of the number of communication chains are affected by an antenna switching process based at least in part on the antenna switching process causing the communication chains to switch to different antennas.

[0095] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the communication chains in the number of communication chains are affected by an antenna switching process based at least in part on an antenna switching process that enables the first RAT and the second RAT to share the same antenna of the dual connectivity antenna configuration.

[0096] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, a dual connectivity antenna configuration includes a plurality of antennas and one or more crossbar switches for adjusting the dual connectivity antenna configuration.

[0097] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, selectively enabling antenna switch selection includes: determining that the number of communication chains does not satisfy a threshold associated with enabling a dual connectivity antenna configuration to be adjusted based on the antenna switch selection; determining an alternative antenna switch selection that satisfies the threshold; and enabling the alternative antenna switch selection to be selected to adjust the dual connectivity antenna configuration.

[0098] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, selectively allowing antenna switch selection comprises selectively allowing reconfiguration based at least in part on whether the number of communication chains satisfies a threshold associated with enabling the dual connectivity antenna configuration to be adjusted based on the antenna switch selection, wherein when the number of communication chains does not satisfy the threshold, the antenna switch selection is prevented, or wherein when the number of communication chains satisfies the threshold, the antenna switch selection is performed.

[0099] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the threshold is a fixed threshold.

[0100] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, a fixed threshold is used to determine a maximum downlink rank reported to a network associated with the first RAT.

[0101] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the fixed threshold is associated with a multiple-input multiple-output antenna capability reported to a network associated with the first RAT.

[0102] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the threshold is a dynamic threshold based at least in part on a metric associated with the first RAT.

[0103] In a thirteenth aspect, either alone or in combination with one or more of the first to twelfth aspects, the metric comprises at least one of: a current downlink rank state, a filtered downlink rank state during a time period, or a maximum rank state during a time period.

[0104] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the first RAT comprises Long Term Evolution (LTE) technology, and the second RAT comprises New Radio (NR) technology.

[0105] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, the first RAT and the second RAT are associated with New Radio (NR) technology.

[0106] In a sixteenth aspect, either alone or in combination with one or more of the first to fifteenth aspects, the second RAT uses time division duplex (TDD) for wireless communication, and the first RAT uses at least one of TDD for wireless communication or frequency division duplex (FDD) for wireless communication.

[0107] Although Fig. 9 Example blocks of process 900 are shown, but in some aspects, process 900 may include Fig. 9 More blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 900. Additionally or alternatively, two or more blocks of process 900 may be performed in parallel.

[0108] Fig.10 1 is a diagram illustrating an example process 1000 performed, for example, by a UE in accordance with the present disclosure. Example process 1000 is an example of a UE (eg, UE 120) performing operations associated with management of antenna switching according to a sounding reference symbol antenna switching configuration.

[0109] like Fig.10 As shown, in some aspects, process 1000 may include determining an antenna configuration that causes a highest number of communication interruptions for a first RAT during an antenna switching process for a second RAT relative to a plurality of possible antenna configurations (block 1010). Fig.11 The determining component 1108 shown in can determine the antenna configuration that results in a highest number of communication interruptions for the first RAT during an antenna switching process for the second RAT relative to a plurality of possible antenna configurations, as described above.

[0110] like Fig.10 As further shown, in some aspects, process 1000 may include preventing selection of an antenna configuration associated with an antenna switching request associated with a first RAT (block 1020). Fig.11 The illustrated selection component 1110) can refrain from selecting an antenna configuration in association with an antenna switching request associated with a first RAT, as described above.

[0111] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0112] Although Fig.10 Example blocks of process 1000 are shown, but in some aspects, process 1000 may include Fig.10 More blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 1000. Additionally or alternatively, two or more blocks of process 1000 may be performed in parallel.

[0113] Fig.11 1 is a block diagram of an example apparatus 1100 for wireless communication. Apparatus 1100 may be a UE, or a UE may include apparatus 1100. In some aspects, apparatus 1100 includes a receiving component 1102 and a sending component 1104, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1100 may communicate with another apparatus 1106 (such as a UE, a base station, or another wireless communication device) using receiving component 1102 and sending component 1104. As further shown, apparatus 1100 may include one or more of determining component 1108 and / or selecting component 1110, etc.

[0114] In some aspects, the apparatus 1100 may be configured to perform Figure 4 Additionally or alternatively, the device 1100 may be configured to perform one or more processes described herein, such as Fig. 9 The process of 900 Fig.10 In some aspects, Fig.11 The device 1100 and / or one or more components shown may include the above combination Figure 2 Additionally or alternatively, Fig.11 One or more of the components shown above may be combined Figure 2 In addition or alternatively, one or more components in the set of components may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0115] The receiving component 1102 may receive communications from the device 1106, such as reference signals, control information, data communications, or a combination thereof. The receiving component 1102 may provide the received communications to one or more other components of the device 1100. In some aspects, the receiving component 1102 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to the one or more other components of the device 1106. In some aspects, the receiving component 1102 may include a combination of the above. Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a UE are described.

[0116] The transmitting component 1104 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 1106. In some aspects, one or more other components of the device 1106 may generate communications and may provide the generated communications to the transmitting component 1104 for transmission to the device 1106. In some aspects, the transmitting component 1104 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 1106. In some aspects, the transmitting component 1104 may include a combination of the above. Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 1104 can be co-located with the receive component 1102 in a transceiver.

[0117] The receiving component 1102 may receive an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first RAT, and the dual connectivity antenna configuration allows communication via the first RAT and the second RAT. The determining component 1108 may determine, based at least in part on the antenna switch selection, a number of communication chains associated with the first RAT that are affected by an antenna switching process of the second RAT. The selecting component 1110 may selectively allow reconfiguration of the dual connectivity antenna configuration according to the antenna switch selection based at least in part on the number of communication chains.

[0118] Determining component 1108 can determine that the antenna configuration causes a highest number of communication interruptions for the first RAT during an antenna switching process for the second RAT relative to a plurality of possible antenna configurations. Selecting component 1110 can refrain from selecting the antenna configuration in association with an antenna switching request associated with the first RAT.

[0119] Fig.11 The number and arrangement of components shown are provided as examples. Fig.11There may be additional components, fewer components, different components, or differently arranged components than those shown. Fig.11 Two or more components shown may be implemented in a single component, or Fig.11 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.11 The illustrated set (one or more) of components may perform the operations described as being performed by Fig.11 Another group of components shown performs one or more functions.

[0120] The following provides an overview of some aspects of the disclosure:

[0121] Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: receiving an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first radio access technology (RAT), and the dual connectivity antenna configuration allows communication via the first RAT and a second RAT; determining a number of communication chains associated with the first RAT that are affected by an antenna switching process of the second RAT based at least in part on the antenna switch selection; and selectively allowing reconfiguration of the dual connectivity antenna configuration according to the antenna switch selection based at least in part on the number of communication chains.

[0122] Aspect 2: The method according to aspect 1, wherein the antenna switch selection is associated with an antenna switching diversity selection process of the first RAT.

[0123] Aspect 3: The method according to any one of aspects 1-2, wherein the antenna switching process comprises a sounding reference symbol (SRS) antenna switching process.

[0124] Aspect 4: The method according to any one of aspects 1-3, wherein the communication chain in the number of communication chains includes at least one of the following: a receiving chain of the first RAT, or a transmitting chain of the first RAT.

[0125] Aspect 5: The method according to any one of aspects 1-4, wherein a communication chain of the number of communication chains is affected by the antenna switching procedure based at least in part on the antenna switching procedure causing the communication chain to switch to a different antenna.

[0126] Aspect 6: The method according to any one of aspects 1-5, wherein the communication chains in the number of communication chains are affected by the antenna switching process based at least in part on the antenna switching process enabling the first RAT and the second RAT to share the same antenna of the dual connectivity antenna configuration.

[0127] Aspect 7: The method according to any one of aspects 1 to 6, wherein the dual connectivity antenna configuration comprises: a plurality of antennas, and one or more crossbar switches for adjusting the dual connectivity antenna configuration.

[0128] Aspect 8: A method according to any one of Aspects 1-7, wherein selectively allowing the antenna switch selection includes: determining that the number of communication chains does not meet a threshold associated with enabling the dual connectivity antenna configuration to be adjusted based on the antenna switch selection; determining an alternative antenna switch selection that meets the threshold; and enabling the alternative antenna switch selection to be selected to adjust the dual connectivity antenna configuration.

[0129] Aspect 9: A method according to any one of Aspects 1-8, wherein selectively allowing the antenna switch selection includes: selectively allowing the reconfiguration based at least in part on whether the number of communication chains satisfies a threshold associated with enabling the dual connectivity antenna configuration to be adjusted according to the antenna switch selection, wherein when the number of communication chains does not satisfy the threshold, the antenna switch selection is blocked, or wherein when the number of communication chains satisfies the threshold, the antenna switch selection is performed.

[0130] Aspect 10: The method according to aspect 9, wherein the threshold is a fixed threshold.

[0131] Aspect 11: The method according to aspect 10, wherein the fixed threshold is used to determine a maximum downlink rank reported to a network associated with the first RAT.

[0132] Aspect 12: The method according to any of aspects 9-11, wherein the fixed threshold is associated with a multiple-input multiple-output antenna capability reported to a network associated with the first RAT.

[0133] Aspect 13: The method according to any of aspects 9-12, wherein the threshold is a dynamic threshold based at least in part on a metric associated with the first RAT.

[0134] Aspect 14: The method according to aspect 13, wherein the metric includes at least one of the following: a current downlink rank state, a filtered downlink rank state during a time period, or a maximum rank state during a time period.

[0135] Aspect 15: The method according to any one of aspects 1-14, wherein the first RAT comprises a Long Term Evolution (LTE) technology and the second RAT comprises a New Radio (NR) technology.

[0136] Aspect 16: The method according to any one of aspects 1-14, wherein the first RAT and the second RAT are associated with New Radio (NR) technology.

[0137] Aspect 17: A method according to any one of aspects 1-16, wherein the second RAT uses time division duplex (TDD) for wireless communication, and the first RAT uses at least one of: TDD for wireless communication, or frequency division duplex (FDD) for wireless communication.

[0138] Aspect 18: A method of wireless communication performed by a user equipment (UE), comprising: determining an antenna configuration that causes a highest number of communication interruptions of a first radio access technology (RAT) during an antenna switching process of a second RAT relative to multiple possible antenna configurations; and preventing selection of the antenna configuration in association with an antenna switching request associated with the first RAT.

[0139] Aspect 19: 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 the method according to one or more of Aspects 1-18.

[0140] Aspect 20: 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 according to one or more of aspects 1-18.

[0141] Aspect 21: An apparatus for wireless communication, comprising at least one component for performing the method according to one or more of aspects 1-18.

[0142] Aspect 22: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1-18.

[0143] Aspect 23: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions, which when executed by one or more processors of a device causes the device to perform the method according to one or more of aspects 1-18.

[0144] 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 from practice of these aspects.

[0145] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. "Software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable programs, execution threads, processes and / or functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language or other. As used herein, the processor is implemented with a combination of hardware and / or hardware and software. Obviously, the system and / or method described herein can be implemented with a combination of hardware and / or hardware and software in different forms. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Therefore, the operation and behavior of the system and / or method are described herein without reference to a specific software code-it should be understood that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.

[0146] 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.

[0147] Even though specific combinations of features are listed in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. In fact, many of these features can be combined in ways that are not specifically recited in the claims and / or disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, the disclosure of each aspect includes each dependent claim in combination with all other claims in the claim set. As used herein, a phrase referring to "at least one" of a list 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, a-b, a-c, b-c, and a-b-c, as well as any combination of multiples of the same elements (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c, or any other order of a, b, and c).

[0148] The elements, actions or instructions used herein should not be interpreted as critical or necessary unless explicitly described in this way. In addition, as used herein, the articles "one" and "an" are intended to include one or more items and can be used interchangeably with "one or more". Further, as used herein, the article "said" is intended to include one or more items quoted about the article "said", and can be used interchangeably with "said one or more". Further, as used herein, the terms "set" and "group" are intended to include one or more items (for example, related items, unrelated items, or a combination of related and unrelated items), and can be used interchangeably with "one or more". In the case of wishing only one item, the phrase "only one" or similar language is used. In addition, as used herein, the terms "have", "have", "with" etc. are intended to be open terms. Further, the phrase "based on" is intended to represent "based at least in part", unless otherwise explicitly stated. Furthermore, as used herein, the term "or" when used in a series is intended to be inclusive and can be used interchangeably with "and / or" unless expressly stated otherwise (e.g., if used in combination with "either one of" or "only one of").

Claims

1. A method of wireless communication performed by a user equipment (UE), comprising: receiving an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first radio access technology (RAT), and the dual connectivity antenna configuration allows communication via the first RAT and a second RAT; determining a number of communication chains associated with the first RAT that are affected by an antenna switching process of the second RAT based at least in part on the antenna switch selection; as well as selectively allowing reconfiguration of the dual connectivity antenna configuration according to the antenna switch selection based at least in part on the number of communication chains, wherein selectively allowing the antenna switch selection comprises: determining that the number of communication chains does not satisfy a threshold associated with enabling the dual connectivity antenna configuration to adjust based on the antenna switch selection; determining an alternative antenna switch selection that satisfies the threshold; and The alternate antenna switch selection is enabled to be selected to adjust the dual connectivity antenna configuration. 2 . The method of claim 1 , wherein the antenna switch selection is associated with an antenna switching diversity selection process of the first RAT.

3. The method of claim 1, wherein the antenna switching procedure comprises a sounding reference symbol (SRS) antenna switching procedure.

4. The method of claim 1 , wherein a communication link in the number of communication links comprises at least one of: a receive chain of the first RAT, or The transmit chain of the first RAT.

5. The method of claim 1, wherein a communication chain in the number of communication chains is affected by the antenna switching process based at least in part on the antenna switching process causing the communication chain to switch to a different antenna.

6. The method of claim 1, wherein the communication chains in the number of communication chains are affected by the antenna switching process based at least in part on the antenna switching process causing the first RAT and the second RAT to share a same antenna of the dual connectivity antenna configuration.

7. The method of claim 1, wherein the dual connectivity antenna configuration comprises: Multiple antennas, and One or more crossbar switches for adjusting the dual connectivity antenna configuration.

8. The method of claim 1 , wherein selectively enabling the antenna switch selection comprises: selectively allowing the reconfiguration based at least in part on whether the number of communication chains satisfies a threshold associated with enabling the dual connectivity antenna configuration to adjust according to the antenna switch selection, wherein when the number of communication chains does not meet the threshold, the antenna switch selection is prevented, or When the number of communication chains meets the threshold, the antenna switch selection is performed. The method of claim 8 , wherein the threshold is a fixed threshold.

10. The method of claim 9, wherein the fixed threshold is used to determine a maximum downlink rank reported to a network associated with the first RAT.

11. The method of claim 9, wherein the fixed threshold is associated with a multiple-input multiple-output antenna capability reported to a network associated with the first RAT.

12. The method of claim 8, wherein the threshold is a dynamic threshold based at least in part on a metric associated with the first RAT.

13. The method of claim 12, wherein the metric comprises at least one of: Current downlink rank state, The filtered downlink rank status during a time period, or The maximum rank state during a time period.

14. The method of claim 1, wherein the first RAT comprises a Long Term Evolution (LTE) technology and the second RAT comprises a New Radio (NR) technology.

15. The method of claim 1, wherein the first RAT and the second RAT are associated with a New Radio (NR) technology.

16. The method of claim 1 , wherein the second RAT uses time division duplex (TDD) for wireless communication and the first RAT uses at least one of: TDD for wireless communications, or Frequency Division Duplex (FDD) for wireless communications.

17. A user equipment (UE), comprising: one or more memories; as well as one or more processors communicatively coupled to the one or more memories, the one or more processors configured to: receiving an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first radio access technology (RAT), and the dual connectivity antenna configuration enables communication via the first RAT and a second RAT; determining, based at least in part on the antenna switch selection, a number of communication chains associated with the first RAT that are affected by an antenna switching process of the second RAT; as well as selectively enabling reconfiguration of the dual connectivity antenna configuration according to the antenna switch selection based at least in part on the number of communication chains, wherein the one or more processors, when selectively enabling the antenna switch selection, are configured to: determining that the number of communication chains does not satisfy a threshold associated with enabling the dual connectivity antenna configuration to adjust based on the antenna switch selection; determining an alternative antenna switch selection that satisfies the threshold; as well as The alternate antenna switch selection is enabled to be selected to adjust the dual connectivity antenna configuration.

18. The UE of claim 17, wherein communication chains of the number of communication chains are affected by the antenna switching procedure based at least in part on the antenna switching procedure causing the communication chains to switch to different antennas.

19. The UE of claim 17, wherein the communication chains in the number of communication chains are affected by the antenna switching process based at least in part on the antenna switching process enabling the first RAT and the second RAT to share a same antenna of the dual connectivity antenna configuration.

20. The UE of claim 17, wherein the one or more processors, when selectively enabling the antenna switch selection, are configured to: selectively allowing the reconfiguration based at least in part on whether the number of communication chains satisfies a threshold associated with enabling the dual connectivity antenna configuration to adjust according to the antenna switch selection, wherein when the number of communication chains does not meet the threshold, the antenna switch selection is prevented, or When the number of communication chains meets the threshold, the antenna switch selection is performed.

21. A non-transitory computer-readable medium storing a set of instructions, the set of instructions comprising: One or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to: receiving an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first radio access technology (RAT), and the dual connectivity antenna configuration enables communication via the first RAT and a second RAT; determining, based at least in part on the antenna switch selection, a number of communication chains associated with the first RAT that are affected by an antenna switching process of the second RAT; as well as selectively enabling reconfiguration of the dual connectivity antenna configuration according to the antenna switch selection based at least in part on the number of communication chains, wherein the one or more instructions causing the UE to selectively enable the antenna switch selection causes the UE to: determining that the number of communication chains does not satisfy a threshold associated with enabling the dual connectivity antenna configuration to adjust based on the antenna switch selection; determining an alternative antenna switch selection that satisfies the threshold; as well as The alternate antenna switch selection is enabled to be selected to adjust the dual connectivity antenna configuration.

22. The non-transitory computer-readable medium of claim 21, wherein a communication link of the number of communication chains is affected by the antenna switching process based at least in part on the antenna switching process causing the communication chain to switch to a different antenna.

23. The non-transitory computer-readable medium of claim 21, wherein the communication chains in the number of communication chains are affected by the antenna switching process based at least in part on the antenna switching process causing the first RAT and the second RAT to share a same antenna of the dual connectivity antenna configuration.

24. The non-transitory computer-readable medium of claim 21, wherein the one or more instructions causing the UE to selectively enable the antenna switch selection causes the UE to: selectively allowing the reconfiguration based at least in part on whether the number of communication chains satisfies a threshold associated with enabling the dual connectivity antenna configuration to adjust according to the antenna switch selection, wherein when the number of communication chains does not meet the threshold, the antenna switch selection is prevented, or When the number of communication chains meets the threshold, the antenna switch selection is performed.

25. An apparatus comprising: means for receiving an antenna switch selection associated with a dual connectivity antenna configuration, wherein the antenna switch selection is associated with a first radio access technology (RAT), and the dual connectivity antenna configuration enables communication via the first RAT and a second RAT; means for determining, based at least in part on the antenna switch selection, a number of communication chains associated with the first RAT that are affected by an antenna switching procedure of the second RAT; as well as Means for selectively allowing reconfiguration of the dual connectivity antenna configuration selected by the antenna switch based at least in part on the number of communication chains, comprising: means for determining that the number of communication chains does not satisfy a threshold associated with enabling the dual connectivity antenna configuration to adjust based on the antenna switch selection; means for determining an alternate antenna switch selection that satisfies said threshold; and Means for enabling the alternate antenna switch selection to be selected to adjust the dual connectivity antenna configuration.

26. The apparatus of claim 25, wherein the means for selectively allowing reconfiguration of the dual connectivity antenna configuration selected by the antenna switch based at least in part on the number of communication chains comprises: means for selectively allowing the reconfiguration based at least in part on whether the number of communication chains satisfies a threshold associated with enabling the dual connectivity antenna configuration to adjust according to the antenna switch selection, wherein when the number of communication chains does not meet the threshold, the antenna switch selection is prevented, or When the number of communication chains meets the threshold, the antenna switch selection is performed.

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