Technologies for antenna switching diversity and multi-SIM concurrent operation management

Abstract

Wireless communication techniques for antenna switching diversity and multi-SIM concurrent operation management are discussed. A UE may communicate via a transmit path associated with a first subscriber identity module (SIM). The transmit path may be mapped to one of a first one or more antennas based on a determination of whether the UE supports at least one of frequency division duplex (FDD) antenna switching diversity or time division duplex (TDD) antenna switching diversity when concurrently performing wireless communications associated with the first SIM and wireless communications associated with a second SIM. The UE may also communicate via at least one receive path associated with a second SIM. The at least one receive path may be mapped to a second one or more antennas based on a determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Indian Patent Application No. 202041037832, filed on September 2, 2020, entitled “TECHNIQUES FOR ANTENNA-SWITCHED DIVERSITY AND MULTI-SIM CONCURRENT OPERATION MANAGEMENT,” the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] In general, aspects of the present disclosure relate to wireless communication systems, and more particularly, to techniques for antenna switching diversity and multi-SIM concurrent operation management. Certain aspects of the techniques discussed below can enable and provide enhanced communication features and techniques for communication systems (including higher data rates, higher reliability, enhanced coexistence, higher mobility, and lower power device operation). Background Art

[0004] Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, etc. These wireless networks may be multiple-access networks capable of supporting multiple users by sharing the available network resources. Such networks, which are typically multiple-access networks, support communications for multiple users by sharing the available network resources.

[0005] A wireless communication network may include several base stations or Node Bs that can support communications for several user equipments (UEs). UEs can communicate with base stations via downlinks and uplinks. The downlink (or forward link) refers to the communication link from a base station to a UE, while the uplink (or reverse link) refers to the communication link from a UE to a base station.

[0006] The base station may send data and control information to the UE on the downlink, and / or may receive data and control information from the UE on the uplink. On the downlink, the transmission from the base station may encounter interference caused by transmissions from neighboring base stations or from other wireless radio frequency (RF) transmitters. On the uplink, the transmission from the UE may encounter interference from uplink transmissions from other UEs communicating with the neighboring base stations or from other wireless RF transmitters. This interference may degrade performance on both the downlink and uplink.

[0007] As the demand for mobile broadband access continues to grow, the potential for interference and congested networks increases as more UEs access long-range wireless communication networks and more short-range wireless systems are deployed in communities. Research and development continue to drive the development of wireless technologies, not only to meet the growing demand for mobile broadband access, but also to improve and enhance the user experience of mobile communications. Summary of the Invention

[0008] The following summarizes some aspects of the present disclosure to provide a basic understanding of the technology discussed. This summary is not an exhaustive overview of all anticipated features of the present disclosure and is not intended to identify key or important elements of all aspects of the present disclosure, nor to delineate the scope of any or all aspects of the present disclosure. Its sole purpose is to provide some concepts of one or more aspects of the present disclosure in summary form as a prelude to the more detailed description that will be given later.

[0009] In one aspect of the present disclosure, a method for wireless communication performed by a UE is provided. For example, the method may include communicating via a transmit path associated with a first subscriber identity module (SIM). The transmit path may be mapped to one of a first one or more antennas based on a determination of whether the UE supports at least one of frequency division duplex (FDD) antenna switching diversity or time division duplex (TDD) antenna switching diversity when wireless communication associated with the first SIM and wireless communication associated with a second SIM are concurrently performed. The method may also include communicating via at least one receive path associated with the second SIM. The at least one receive path may be mapped to a second one or more antennas based on a determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

[0010] In another aspect of the present disclosure, a UE configured for wireless communication is provided. For example, the UE may include means for communicating via a transmit path associated with a first SIM. The transmit path may be mapped to one of the first one or more antennas based on a determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity when wireless communication associated with the first SIM and wireless communication associated with a second SIM are concurrently performed. The UE may also include means for communicating via at least one receive path associated with the second SIM. The at least one receive path may be mapped to the second one or more antennas based on a determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

[0011] In an additional aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon is provided. The program code may include program code executable by a computer to cause the computer to communicate via a transmit path associated with a first subscriber identity module (SIM). The transmit path may be mapped to one of the first one or more antennas based on a determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity when wireless communications associated with the first SIM and wireless communications associated with a second SIM are concurrently performed. The program code may include program code executable by the computer to cause the computer to communicate via at least one receive path associated with the second SIM. The at least one receive path may be mapped to the second one or more antennas based on a determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

[0012] In another aspect of the present disclosure, a user equipment (UE) is provided. The UE may include at least one processor. The UE may also include at least one memory communicatively coupled to the at least one processor and storing processor-readable code, the processor-readable code, when executed by the at least one processor, configured to communicate via a transmit path associated with a first subscriber identity module (SIM). The transmit path may be mapped to one of the first one or more antennas based on a determination of whether the UE supports at least one of frequency division duplex (FDD) antenna switching diversity or time division duplex (TDD) antenna switching diversity when wireless communications associated with the first SIM and wireless communications associated with a second SIM are concurrently performed. The processor-readable code, when executed by the at least one processor, may also be configured to communicate via at least one receive path associated with the second SIM. The at least one receive path may be mapped to the second one or more antennas based on a determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

[0013] For those of ordinary skill in the art, after reading the following description of specific exemplary embodiments in conjunction with the accompanying drawings, other aspects, features and embodiments will become apparent. Although features may be discussed below with respect to certain aspects and the accompanying drawings, all embodiments may include one or more of the advantageous features discussed herein. In other words, although one or more aspects may be discussed as having certain advantageous features, one or more of such features may also be used according to various aspects. In a similar manner, although exemplary aspects may be discussed below as equipment, systems or methods, exemplary aspects may be implemented in various devices, systems and methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] A further understanding of the nature and advantages of the present disclosure may be achieved by reference to the following drawings. In the drawings, similar components or features may have the same reference numerals. Further, various components of the same type may be distinguished by following the reference numeral with a second reference numeral that distinguishes between the similar components. If only the first reference numeral is used in the specification, the description applies to any of the similar components having the same first reference numeral, without regard to the second reference numeral.

[0015] Figure 1 is a block diagram illustrating details of a wireless communication system according to some embodiments of the present disclosure.

[0016] Figure 2 is a block diagram conceptually illustrating a design of a base station and a UE configured according to some embodiments of the present disclosure.

[0017] Figure 3 is a block diagram illustrating a method for antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure.

[0018] Figure 4A is a block diagram illustrating an example of time division duplex (TDD) antenna switching diversity according to some aspects of the present disclosure.

[0019] Figure 4B is a block diagram illustrating an example of TDD antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure.

[0020] Figure 5A is a block diagram illustrating an example of frequency division duplex (FDD) antenna switching diversity according to some aspects of the present disclosure.

[0021] Figure 5B is a block diagram illustrating an example of FDD antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure.

[0022] Figure 6 is another block diagram illustrating an example of FDD antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure.

[0023] Figure 7 is yet another block diagram illustrating an example of FDD antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure.

[0024] Figure 8A and Figure 8B is a state diagram illustrating an example of states for antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure.

[0025] Figure 9 is a block diagram conceptually illustrating an example of a design of a UE configured in accordance with some aspects of the present disclosure. DETAILED DESCRIPTION

[0026] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to limit the scope of the present disclosure. Specifically, the detailed description includes specific details for the purpose of providing a thorough understanding of the subject matter of the invention. It will be apparent to those skilled in the art that these specific details are not required in every case, and in some instances, well-known structures and components are shown in block diagram form for clarity of presentation.

[0027] In summary, the present disclosure relates to providing or participating in authorized shared access between two or more wireless devices in one or more wireless communication systems (also referred to as wireless communication networks). In various implementations, the techniques and apparatus may be used in wireless communication networks such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single carrier FDMA (SC-FDMA) networks, LTE networks, GSM networks, 5th generation (5G) or new radio (NR) networks (sometimes referred to as "5G NR" networks / systems / devices), and other communication networks. As described herein, the terms "network" and "system" may be used interchangeably.

[0028] For example, a CDMA network may implement a radio technology such as Universal Terrestrial Radio Access (UTRA), cdma2000, etc. UTRA includes Wideband CDMA (WCDMA) and Low Code Rate (LCR). CDMA2000 covers IS-2000, IS-95, and IS-856 standards.

[0029] For example, a TDMA network can implement radio technologies such as Global System for Mobile Communications (GSM). The Third Generation Partnership Project (3GPP) defines standards for the GSM EDGE (Enhanced Data Rates for GSM Evolution) Radio Access Network (RAN), also denoted as GERAN. GERAN, along with the network connecting base stations (e.g., Ater and Abis interfaces) and base station controllers (A interfaces, etc.), is the radio component of GSM / EDGE. The radio access network (RAN) represents the component of a GSM network through which phone calls and packet data are routed from the public switched telephone network (PSTN) and the internet to user handsets (also known as user terminals or user equipment (UE)), and from user handsets to the PSTN and the internet. A mobile phone operator's network may include one or more GERANs. In the case of UMTS / GSM networks, the GERAN may be coupled to the Universal Terrestrial Radio Access Network (UTRAN). Additionally, an operator's network may include one or more LTE networks and / or one or more other networks. Various network types may utilize different radio access technologies (RATs) and radio access networks (RANs).

[0030] OFDMA networks can implement radio technologies such as Evolved UTRA (E-UTRA), IEEE 802.11, IEEE 802.16, IEEE802.20, Flash OFDM, and the like. UTRA, E-UTRA, and Global System for Mobile Communications (GSM) are part of the Universal Mobile Telecommunications System (UMTS). Specifically, Long Term Evolution (LTE) is a version of UMTS that uses E-UTRA. UTRA, E-UTRA, GSM, UMTS, and LTE are described in documents provided by an organization called the "3rd Generation Partnership Project" (3GPP), and cdma2000 is described in documents provided by an organization called the "3rd Generation Partnership Project 2" (3GPP2). These various radio technologies and standards are either known or under development. For example, 3GPP is a collaboration between a group of telecommunications associations with the goal of defining globally applicable third generation (3G) mobile phone specifications. 3GPP Long Term Evolution (LTE) is a 3GPP project aimed at improving the Universal Mobile Telecommunications System (UMTS) mobile phone standard. 3GPP may define specifications for next-generation mobile networks, mobile systems, and mobile devices. This disclosure may describe certain aspects with reference to LTE, 4G, or 5G NR technologies; however, the description is not intended to be limited to a particular technology or application, and one or more aspects described with reference to one technology may be understood to be applicable to another technology. Indeed, one or more aspects of this disclosure relate to shared access to wireless spectrum between networks using different radio access technologies or radio air interfaces.

[0031] 5G networks are expected to enable diverse deployments, diverse spectrum, and diverse services and devices using a unified air interface based on OFDM. To achieve these goals, in addition to developing new radio technologies for 5G NR networks, further enhancements to LTE and LTE-A are also being considered. 5G NR will be able to expand to provide the following coverage: (1) Coverage for massive IoT (IoT) with ultra-high density (e.g., ~1M nodes / km) and deep coverage with the ability to reach challenging locations; (2) Deep coverage for massive IoT with ultra-high density (e.g., ~1M nodes / km) and deep coverage with the ability to reach challenging locations; (3) Deep coverage for massive IoT with ultra-high density (e.g., ~1M nodes / km) and deep coverage with the ability to reach challenging locations; (4) Deep coverage for massive IoT with ultra-high density (e.g., ~1M nodes / km) 2 ), ultra-low complexity (e.g., ~10s of bits / second), ultra-low energy (e.g., ~10+ years of battery life); (2) including mission-critical control with strong security for protecting sensitive personal, financial, or confidential information, ultra-high reliability (e.g., ~99.9999% reliability), ultra-low latency (e.g., ~1 millisecond (ms)), and users with a wide range of mobility or lack of mobility; and (3) with enhanced mobile broadband, including very high capacity (e.g., ~10Tbps / km 2 ), extreme data rates (e.g., multi-Gbps rates, 100+Mbps user experienced rates), and deep perception with improved discovery and optimization.

[0032] 5G NR devices, networks, and systems can be implemented using optimized OFDM-based waveform features. These features may include: scalable numerology and transmission time intervals (TTIs); a common flexible framework that utilizes dynamic, low-latency time division duplex (TDD) / frequency division duplex (FDD) designs to efficiently multiplex services and features; and improved wireless technologies such as massive multiple-input multiple-output (MIMO), robust millimeter wave (mmWave) transmission, advanced channel coding, and device-centric mobility. The scalability of the numerology in 5G NR (with scaling of subcarrier spacing) can efficiently address the operation of different services across different spectrums and different deployments. For example, in various outdoor and macro coverage deployments implemented with less than 3 GHz FDD / TDD, the subcarrier spacing can occur at 15 kHz on bandwidths such as 1, 5, 10, 20 MHz. For other various outdoor and small cell coverage deployments with TDD greater than 3 GHz, the subcarrier spacing can occur at 30 kHz on 80 / 100 MHz bandwidth. For various other indoor broadband implementations using TDD on the unlicensed portion of the 5 GHz band, subcarrier spacing can occur at 60 kHz over a 160 MHz bandwidth. Finally, for various deployments transmitting with the mmWave component of TDD at 28 GHz, subcarrier spacing can occur at 120 kHz over a 500 MHz bandwidth.

[0033] 5G NR's scalable digital scheme facilitates scalable TTIs for different latency and quality of service (QoS) requirements. For example, shorter TTIs can be used for low latency and high reliability, while longer TTIs can be used for higher spectral efficiency. Efficient multiplexing of long and short TTIs allows transmissions to start on symbol boundaries. 5G NR also anticipates a self-contained integrated subframe design in which uplink / downlink scheduling information, data, and acknowledgments are in the same subframe. The self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, adaptive uplink / downlink (which can be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet current traffic needs).

[0034] For clarity, certain aspects of the devices and techniques may be described below with reference to example 5G NR implementations or in a 5G-centric manner, and 5G terminology may be used as illustrative examples in portions of the description below; however, the description is not intended to be limited to 5G applications.

[0035] Furthermore, it should be understood that in operation, a wireless communication network adapted according to the concepts herein can operate using any combination of licensed or unlicensed spectrum, depending on load and availability. Thus, it will be apparent to one of ordinary skill in the art that the systems, apparatus, and methods described herein can be applied to other communication systems and applications beyond the specific examples provided.

[0036] Although various aspects and implementations are described in this application by way of illustration of some examples, it will be understood by those skilled in the art that additional implementations and use cases may occur in many different arrangements and scenarios. The innovations described herein may be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, embodiments and / or uses may occur via integrated chip embodiments and / or other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial devices, retail / purchase devices, medical devices, AI-enabled devices, etc.). Although some examples may or may not be specifically targeted at use cases or applications, there may be a wide variety of applicability of the described innovations. The scope of implementation may range from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or OEM devices or systems that incorporate one or more of the described aspects. In some practical settings, the devices incorporating the described aspects and features may also necessarily include additional components and features for implementing and enforcing the claimed and described embodiments. It is intended that the innovations described herein can be implemented in a wide variety of implementations, including both large / small devices of varying sizes, shapes, and structures, chip-level components, multi-component systems (e.g., RF chains, communication interfaces, processors), distributed arrangements, end-user devices, etc.

[0037] Figure 1 1 is a block diagram illustrating details of an example wireless communication system. The wireless communication system may include a wireless network 100. The wireless network 100 may, for example, include a 5G wireless network. As will be appreciated by those skilled in the art, Figure 1 Components appearing in may have related counterparts in other network arrangements, including, for example, cellular network arrangements and non-cellular network arrangements (eg, device-to-device, or peer-to-peer, or ad hoc network arrangements, etc.).

[0038] exist Figure 1The wireless network 100 shown in FIG. 1 includes several base stations 105 and other network entities. A base station can be a station that communicates with a UE and may also be referred to as an evolved Node B (eNB), a next-generation eNB (gNB), an access point, etc. Each base station 105 can provide communication coverage for a specific geographic area. In 3GPP, the term "cell" can refer to the specific geographic coverage area of ​​a base station and / or the base station subsystem serving the coverage area, depending on the context in which the term is used. In implementations of the wireless network 100 herein, the base stations 105 can be associated with the same operator or different operators (e.g., the wireless network 100 may include multiple operator wireless networks). In addition, in implementations of the wireless network 100 herein, the base stations 105 can provide wireless communications using one or more of the same frequencies as neighboring cells (e.g., one or more frequency bands in a licensed spectrum, an unlicensed spectrum, or a combination thereof). In some examples, a single base station 105 or UE 115 can be operated by more than one network operating entity. In some other examples, each base station 105 and UE 115 can be operated by a single network operating entity.

[0039] A base station may provide communication coverage for macro cells or small cells (such as pico cells or femto cells) and / or other types of cells. A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs with service subscriptions with the network provider. A small cell (such as a pico cell) will typically cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions with the network provider. A small cell (such as a femto cell) will also typically cover a relatively small geographic area (e.g., a residence) and, in addition to unrestricted access, may also provide restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs for users in a residence, etc.). A base station for a macro cell may be referred to as a macro base station. A base station for a small cell may be referred to as a small cell base station, a pico base station, a femto base station, or a home base station. In Figure 1 In the example shown in FIG, base stations 105d and 105e are conventional macro base stations, while base stations 105a-105c are macro base stations implemented using one of 3-dimensional (3D) MIMO, full-dimensional (FD) MIMO, or massive MIMO. Base stations 105a-105c use their higher-dimensional MIMO capabilities to utilize 3D beamforming in both elevation and azimuth beamforming to increase coverage and capacity. Base station 105f is a small cell base station, which can be a home node or a portable access point. The base station can support one or more (e.g., two, three, four, etc.) cells.

[0040] Wireless network 100 can support synchronous operation or asynchronous operation. For synchronous operation, base stations can have similar frame timing, and transmissions from different base stations can be approximately aligned in time. For asynchronous operation, base stations can have different frame timing, and transmissions from different base stations can be misaligned in time. In some scenarios, the network can be enabled or configured to handle dynamic switching between synchronous operation and asynchronous operation.

[0041] UEs 115 are dispersed throughout the wireless network 100, and each UE may be stationary or mobile. It should be appreciated that, although mobile devices are generally referred to as user equipment (UE) in the standards and specifications issued by 3GPP, such devices may be referred to as mobile stations (MS), subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals (ATs), mobile terminals, wireless terminals, remote terminals, handsets, terminals, user agents, mobile clients, clients, gaming devices, augmented reality devices, vehicle component devices / modules, or some other appropriate terminology by those skilled in the art. Within this document, a "mobile" device or UE does not necessarily need to have the ability to move and may be stationary. Some non-limiting examples of mobile devices, such as may include implementations of one or more of UE 115, include mobile phones, cellular (cell) phones, smart phones, Session Initiation Protocol (SIP) phones, wireless local loop (WLL) stations, laptop computers, personal computers (PCs), notebook computers, netbooks, smartbooks, tablet computers, and personal digital assistants (PDAs). The mobile device may additionally be an "Internet of Things" (IoT) or "Internet of Everything" (IoE) device, such as a car or other vehicle, a satellite radio unit, a global positioning system (GPS) device, a logistics controller, a drone, a multi-wing aircraft, a quad-wing aircraft, smart energy or security equipment, solar panels or solar arrays, municipal lighting, water or other infrastructure; industrial automation and enterprise equipment; consumer and wearable devices, such as glasses, wearable cameras, smart watches, health or fitness trackers, mammalian implantable devices, gesture tracking devices, medical devices, digital audio players (e.g., MP3 players), cameras, game consoles, etc.; and digital home or smart home devices, such as home audio, video and multimedia equipment, appliances, sensors, vending machines, smart lighting, home security systems, smart meters, etc. In one aspect, the UE may be a device that includes a universal integrated circuit card (UICC). In another aspect, the UE 115 may be a device that does not include a UICC. In some aspects, a UE that does not include a UICC may also be referred to as an IoE device. Figure 1The UEs 115a-115d in the implementation shown in FIG are examples of mobile smartphone-type devices accessing the wireless network 100. A UE may also be a machine specifically configured for connected communications, including machine type communications (MTC), enhanced MTC (eMTC), narrowband IoT (NB-IoT), etc. Figure 1 UEs 115e-115k shown in FIG. 1 are examples of various machines configured for communication that access wireless network 100.

[0042] A mobile device, such as UE 115, may be able to communicate with any type of base station, whether macro, pico, femto, repeater, etc. Figure 1 In the figure, the communication link (represented as a lightning bolt) indicates wireless transmission between the UE and the serving base station (which is the base station designated to serve the UE on the downlink and / or uplink), or the desired transmission between base stations and the backhaul transmission between base stations. In some scenarios, the UE can operate as a base station or other network node. Backhaul communication between base stations in the wireless network 100 can occur using wired and / or wireless communication links.

[0043] In operation at wireless network 100, base stations 105a-105c use 3D beamforming and coordinated spatial techniques (such as coordinated multipoint (CoMP) or multi-connectivity) to serve UEs 115a and 115b. Macro base station 105d performs backhaul communications with base stations 105a-105c and small cells (base station 105f). Macro base station 105d also transmits multicast services that are subscribed to and received by UEs 115c and 115d. Such multicast services may include mobile TV or streaming video, or may include other services for providing community information, such as weather emergencies or alerts (such as Amber Alerts or Gray Alerts).

[0044] Each implementation of the wireless network 100 supports mission-critical communications for mission-critical devices (such as UE 115e, which is a drone) using ultra-reliable and redundant links. The redundant communication links with UE 115e include those from macro base stations 105d and 105e and from small cell base station 105f. Other machine-type devices (such as UE 115f (thermometer), UE 115g (smart meter), and UE 115h (wearable device)) can communicate directly with base stations (such as small cell base station 105f and macro base station 105e) over the wireless network 100, or in a multi-hop configuration by communicating with another user device that relays its information to the network (such as UE 115f transmitting temperature measurement information to the smart meter (UE 115g), which is then reported to the network via small cell base station 105f). The wireless network 100 may also provide additional network efficiencies through dynamic, low-latency TDD / FDD communications, such as in a vehicle-to-vehicle (V2V) mesh network between UEs 115i-115k communicating with a macro base station 105e.

[0045] Figure 2 The diagram conceptually illustrates a base station 105 and a UE 115 (which may be Figure 1 1 and 1 of the UEs). For a restricted association scenario (as mentioned above), the base station 105 may be Figure 1 The small cell base station 105f in the base station 105f, and the UE 115 may be a UE 115c or 115D operating in the service area of ​​the base station 105f, and the UE 115c or 115D will be included in the list of accessible UEs for the small cell base station 105f in order to access the small cell base station 105f. The base station 105 may also be some other type of base station. Figure 2 As shown, the base station 105 may be equipped with antennas 234a through 234t, and the UE 115 may be equipped with antennas 252a through 252r to facilitate wireless communications.

[0046] At the base station 105, the transmit processor 220 may receive data from a data source 212 and control information from the controller / processor 240. The control information may be for the physical broadcast channel (PBCH), the physical control format indicator channel (PCFICH), the physical hybrid ARQ (automatic repeat request) indicator channel (PHICH), the physical downlink control channel (PDCCH), the enhanced physical downlink control channel (EPDCCH), the MTC physical downlink control channel (MPDCCH), etc. Data may be for the PDSCH, etc. Furthermore, the transmit processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols, such as for the primary synchronization signal (PSS) and secondary synchronization signal (SSS), as well as cell-specific reference signals. The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​the data symbols, control symbols, and / or reference symbols, if applicable, and may provide output symbol streams to modulators (MODs) 232a through 232t. For example, spatial processing performed on data symbols, control symbols, or reference symbols may include precoding. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may additionally or alternatively process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a through 232t may be transmitted via antennas 234a through 234t, respectively.

[0047] At the UE 115, antennas 252a through 252r may receive downlink signals from the base station 105 and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 115 to a data sink 260, and provide decoded control information to a controller / processor 280.

[0048] On the uplink, at the UE 115, a transmit processor 264 may receive and process data from a data source 262 (e.g., for a physical uplink shared channel (PUSCH)) and control information from the controller / processor 280 (e.g., for a physical uplink control channel (PUCCH)). Additionally, the transmit processor 264 may generate reference symbols for 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 SC-FDM, etc.), and transmitted to the base station 105. At the base station 105, the uplink signal from the UE 115 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 transmitted by the UE 115. Processor 238 may provide decoded data to a data sink 239 and decoded control information to controller / processor 240 .

[0049] The controllers / processors 240 and 280 may direct the operation at the base station 105 and the UE 115, respectively. The controller / processor 240 and / or other processors and modules at the base station 105, and / or the controller / processor 280 and / or other processors and modules at the UE 115 may perform or direct the execution of various processes for the techniques described herein, such as performing or directing the execution of the various processes described in the present invention. Figure 3 Memories 242 and 282 may store data and program codes for base station 105 and UE 115, respectively. Scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0050] Wireless communication systems operated by different network operating entities (e.g., network operators) may share spectrum. In some instances, one network operating entity may be configured to use the entire designated shared spectrum for at least one time period before another network operating entity uses the entire designated shared spectrum for a different time period. Therefore, to allow network operating entities to use the entire designated shared spectrum and to mitigate interfering communications between different network operating entities, certain resources (e.g., time) may be divided and allocated to different network operating entities for certain types of communications.

[0051] For example, a network operation entity may be allocated certain time resources that are reserved for exclusive communication by that network operation entity using the entire shared spectrum. A network operation entity may also be allocated other time resources in which it is given priority over other network operation entities for communication using the shared spectrum. These time resources prioritized for use by the network operation entity may be used on an opportunistic basis by other network operation entities if the prioritized network operation entities do not utilize these resources. Additional time resources may be allocated for use by any network operator on an opportunistic basis.

[0052] Access to the shared spectrum and arbitration of time resources between different network operating entities may be centrally controlled by a single entity, autonomously determined by a predefined arbitration scheme, or dynamically determined based on interactions between the network operator's wireless nodes.

[0053] In some cases, the UE 115 and the base station 105 may operate in a shared radio frequency spectrum band (which may include licensed or unlicensed (e.g., contention-based) spectrum). In the unlicensed frequency portion of the shared radio frequency spectrum band, the UE 115 or base station 105 may traditionally perform a medium sensing process to compete for access to the spectrum. For example, the UE 115 or base station 105 may perform a listen-before-talk or listen-before-transmit (LBT) process (e.g., a clear channel assessment (CCA)) before communicating to determine whether the shared channel is available. In some implementations, the CCA may include an energy detection process to determine whether there are any other active transmissions. For example, the device may infer that a change in the received signal strength indicator (RSSI) of a power meter indicates that the channel is occupied. Specifically, a signal power concentrated in a certain bandwidth and exceeding a predetermined noise floor may indicate another wireless transmitter. CCA may also include detection of a specific sequence that indicates use of the channel. For example, another device may send a specific preamble before sending a data sequence. In some cases, the LBT process may include the wireless node adjusting its own backoff window based on the amount of energy detected on the channel and / or acknowledgement / negative acknowledgement (ACK / NACK) feedback for packets it itself sent as a proxy for collisions.

[0054] In some aspects of the present disclosure, a UE (such as UE 115) may include multiple subscriber identity modules (SIMs). For example, in some aspects, the UE may include two SIMs and may perform multi-SIM concurrent operations. As an example, when the UE has two SIMs, the UE may perform multi-SIM concurrent operations by concurrently performing wireless communications associated with a first SIM and wireless communications associated with a second SIM.

[0055] According to some aspects, the UE may use the same RF front-end circuitry and antenna to perform wireless communications associated with different SIMs. For example, wireless communications associated with a first SIM may be performed using the same antenna and at least some of the RF front-end circuitry (such as filters, amplifiers, and switches) used to perform wireless communications associated with a second SIM.

[0056] Aspects of the present disclosure may provide enhanced multi-SIM concurrent operation management schemes. These schemes may allow a UE to use some or all of its available antennas for an antenna switching diversity scheme used for wireless communications associated with a first SIM, while also allowing the UE to concurrently use some or all of its available antennas to receive information as part of wireless communications associated with a second SIM. In some aspects, the first SIM may be associated with a connection to a base station, while the second SIM may not be associated with a connection to a base station. For example, the second SIM may be operating in idle mode. Aspects of the present disclosure may ensure that wireless communications associated with the first SIM and wireless communications associated with the second SIM do not interrupt each other during concurrent operation. Aspects of the present disclosure may take into account various types of antenna switching hardware used by a UE to perform multi-SIM concurrent operation. Aspects of the present disclosure may also take into account the need to allocate RF front-end circuitry and antennas to the second SIM operating in idle mode when the second SIM wakes up to perform its idle mode wireless communications operations (such as reading and / or decoding a paging message), while the first SIM is operating in connected mode to send and / or receive information.

[0057] As an example, Figure 3 A block diagram of a method for antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure is shown. Aspects of the method 300 can utilize Figures 1 to 2 and Figure 9 Various other aspects of the present disclosure described herein may be implemented, such as in a mobile device / UE. For example, reference Figure 2 , the controller / processor 280 of the UE 115 may control the UE 115 to perform the method 300 .

[0058] Figure 3A method 300 is shown that can be performed by a wireless communication device, such as UE 115. At block 302, a UE, such as UE 115, can communicate (e.g., transmit) via a transmit path associated with a first SIM; the transmit path can be mapped to one of a first one or more antennas based on a determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity when wireless communication associated with the first SIM and wireless communication associated with a second SIM are concurrently performed. The method 300 also includes, at block 304, the UE communicating (e.g., receiving) via at least one receive path associated with a second SIM; the at least one receive path can be mapped to a second one or more antennas based on a determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

[0059] In some aspects, a transmit path (such as at block 302) and at least one receive path (such as at block 304) may be mapped to their respective antennas to prevent antenna switching conflicts from occurring when wireless communications associated with a first SIM and wireless communications associated with a second SIM are concurrently performed. According to some aspects, an antenna switching conflict may refer to reconfiguring the mapping of a transmit path or reconfiguring the mapping of at least one receive path. In other words, an antenna switching conflict may refer to reconfiguring a transmit path or reconfiguring at least one receive path. Thus, in some aspects, a transmit path associated with a first SIM may be mapped to one of the first one or more antennas so as not to reconfigure the mapping of at least one receive path associated with a second SIM to the second one or more antennas, and at least one receive path associated with the second SIM may be mapped to the second one or more antennas so as not to reconfigure the mapping of a transmit path associated with the first SIM to one of the first one or more antennas.

[0060] According to some aspects, the actions shown at blocks 302 through 304 of method 300 may be a subset of the overall operations performed by a UE to perform antenna switching diversity and multi-SIM concurrent operation management. The relationship between the actions shown at blocks 302 through 304 of method 300 and other operations performed by a UE to perform antenna switching diversity and multi-SIM concurrent operation management may become more apparent from the discussion of the overall operations performed by a UE or a base station to perform antenna switching diversity and multi-SIM concurrent operation management.

[0061] Figure 4A Shown is a block diagram illustrating an example of TDD antenna switching diversity in accordance with aspects of the present disclosure. Figure 4AA switch 402 is shown. Switch 402 may have a transmit path 404 as one input and a receive path 406 as another input. Transmit path 404 and receive path 406 may both be associated with wireless communications associated with a first SIM. In some aspects, wireless communications associated with a first SIM may refer to wireless communications performed using a connection with a base station, the connection established based on information associated with the first SIM. For example, a UE may have a connection with a base station, the connection established based on information associated with the first SIM. The UE may perform wireless communications associated with the first SIM by using the connection with the base station based on the first SIM to send / receive information to / from the base station. For example, the UE may use transmit path 404 to send information to the base station and may use receive path 406 to receive information from the base station. Depending on whether information is being sent or received, switch 402 may electrically couple transmit path 404 or receive path 406 to its output 408.

[0062] In some aspects, another switch 410 can be used to electrically couple the output 408 of the switch 402 to one of the outputs 412, 414, 416, and 418 of the switch 410. Figure 4A As shown, output 408 of switch 402 may be electrically coupled to input 411 of switch 410. Furthermore, each of outputs 412, 414, 416, and 418 of switch 410 may be electrically coupled to a different antenna 422, 424, 426, and 428, respectively.

[0063] According to some aspects, when transmit path 404 is selected by switch 402, the UE may utilize an antenna switching diversity scheme to determine which of the outputs of switch 410, and therefore which of the associated antennas, should be electrically coupled to output 408 of switch 402 to transmit information on transmit path 404. In some aspects, the antenna switching diversity scheme may include various operations. For example, the antenna switching diversity scheme may include the UE performing measurements on one or more of its antennas and then selecting the antenna that produces the best communication characteristics as the antenna to be used to transmit information. Reference Figure 4A , the UE can utilize antenna switching diversity scheme to determine which of antennas 422, 424, 426 and 428 should be used as transmit antennas. As shown by arrow 413, Figure 4A In the aspect shown in , the UE can utilize an antenna switching diversity scheme to determine that antenna 426 should be used as the transmit antenna for transmitting information associated with the first SIM. As such, switch 410 can be configured to couple output 416 of switch 410, which is coupled to antenna 426, to input 411 so that information from transmit path 404 associated with the first SIM can be transmitted using antenna 426.

[0064] In some aspects, the UE may be free to subsequently change the antenna to transmit path configuration. For example, in some aspects, when the UE determines that a different antenna (such as antenna 424) is more suitable than antenna 426 as a transmit antenna for transmitting information on transmit path 404, the UE may subsequently electrically couple transmit path 404 to a different antenna (such as antenna 424). Thus, in some aspects, as the communication environment changes, the UE may change transmit antennas to ensure that the best antenna or one of the best antennas is being used to transmit information.

[0065] According to some aspects, when the receive path 406 is selected by the switch 402, the UE may not utilize an antenna switching diversity scheme to select the best antenna to couple to the receive path 406 to receive information from the base station. For example, in some aspects, a switch for performing TDD antenna switching diversity may be configured to couple a receive path at its input to a particular output port (and associated antenna) and may be configured not to subsequently change that original coupling configuration. For example, referring to Figure 4A , when switch 402 couples receive path 406 to input 411 of switch 410, switch 410 can be configured to couple input 411 to output 412, and therefore also to antenna 422. According to some aspects, this coupling configuration (i.e., receive path 406 to antenna 422) may not be subsequently changed by switch 410. As a result, in some aspects, receive path 406 can include information received at the same antenna (such as antenna 422) whenever the UE receives information associated with the first SIM. In some aspects, additional receive paths used by the UE to concurrently receive information associated with the first SIM along with receive path 406 can also each be coupled to only one respective antenna. For example, in Figure 4A , the second receive path 432, the third receive path 434, and the fourth receive path 436 may be capable of coupling only to antenna 424, antenna 426, and antenna 428, respectively. Figure 4A As shown, switches 442, 444, and 446, respectively, may be used to couple antennas 424, 426, and 428 to outputs 414, 416, and 418, respectively, or to second, third, and fourth receive paths 432, 434, and 436, respectively.

[0066] In some aspects (such as Figure 3302 ), the UE may communicate (e.g., transmit) via a transmit path that is mapped to one of the UE antennas based on a determination that the UE may utilize TDD antenna switching diversity when the UE concurrently performs wireless communications associated with the first SIM and wireless communications associated with the second SIM. For example, a UE coupling the transmit path to one of the UE's antennas using switch 410 may determine that it supports TDD antenna switching diversity when concurrently performing wireless communications associated with the first SIM and wireless communications associated with the second SIM. As shown in Figure 3 As shown at block 304 of , according to some aspects, based on a determination that the UE supports TDD antenna switching diversity when the UE concurrently performs wireless communications associated with the first SIM and wireless communications associated with the second SIM, the UE may communicate (e.g., receive) via at least one receive path associated with the second SIM; the at least one receive path being mapped to the second one or more antennas based on the determination of whether the UE utilizes TDD antenna switching diversity.

[0067] As an example, FIG4B shows a block diagram illustrating an example of TDD antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure. In some aspects, Figure 4B It may be shown how a transmit path associated with a first SIM may be mapped to one of a first one or more antennas and how at least one receive path associated with a second SIM may be mapped to a second one or more antennas, so as to prevent antenna switching conflicts from occurring when the UE concurrently performs wireless communications associated with the first SIM and wireless communications associated with the second SIM.

[0068] like Figure 4B As shown, the transmit path associated with the first SIM is mapped to one of the first one or more antennas (such as in FIG. 1 ) according to the determination that the UE supports TDD antenna switching diversity. Figure 3 The mapped transmit path described at block 302 of FIG. 4 may include the UE configuring switches 402 and 410 to electrically couple transmit path 404 to antenna 422 or one of antennas 424. In other words, Figure 4B in Figure 3 The first one or more antennas shown at block 304 of 424 may refer to antennas 422 and 424. However, in general, the first one or more antennas may refer to a subset of antennas available to the UE for transmitting information and may not be limited to only two antennas in each aspect. In some aspects, the UE may utilize an antenna switching diversity scheme to determine which of antennas 422 or 424 should be electrically coupled to the transmit path 404. Thus, in some aspects, the transmit path associated with the first SIM is mapped to one of the first one or more antennas (such as in Figure 3 The mapped transmit path described at block 304 of FIG. 3 may include the UE allocating the first one or more antennas for antenna switching diversity. Figure 4B In the aspect of , the UE has selected antenna 424 to be electrically coupled to transmit path 404 based on antenna switching diversity. According to some aspects, by limiting the antennas that can be used for antenna switching diversity to, for example, Figure 4B By using antennas 422 and 424 in the UE, the UE can leave some antennas available for use when wireless communication associated with the second SIM is performed concurrently with wireless communication associated with the first SIM. According to some aspects, this can prevent antenna switching conflicts from occurring during concurrent operation of wireless communication associated with the second SIM and wireless communication associated with the first SIM.

[0069] In some aspects, wireless communications associated with the second SIM may be performed concurrently with wireless communications associated with the first SIM. According to some aspects, wireless communications associated with the second SIM may refer to receiving information associated with the second SIM. According to some aspects, there may not be a connection established with a base station based on the information associated with the second SIM. In some aspects, the second SIM may be in an idle state, and the reception of the information may occur during a time period when the UE is scheduled to cause the second SIM to exit the idle state and monitor a channel for possible information to be received.

[0070] exist Figure 4B In some aspects, receive path 452 and receive path 454 can be associated with the second SIM. For example, the UE can use at least one of receive paths 452 or 454 to receive information associated with the second SIM. In some aspects, at least one of receive paths 452 or 454 can be used to receive information associated with the second SIM during a time period when the UE is scheduled to monitor the channel for possible information to be received. In some aspects, receive path 452 can be duplexed with third receive path 434 associated with the first SIM, and receive path 454 can be duplexed with fourth receive path 436 associated with the first SIM.

[0071] According to some aspects, during multi-SIM concurrent operation, the UE may need to have at least one antenna available for wireless communications associated with the second SIM, e.g., to receive information associated with the second SIM using at least one of receive paths 452 or 454 during a time period in which the UE is scheduled to monitor a channel associated with the second SIM. Figure 4B As shown, the UE may communicate (e.g., receive) via at least one receive path associated with the second SIM. The at least one receive path may be mapped to the second one or more antennas (such as in FIG. 1 ) based on a determination that the UE supports TDD antenna switching diversity. Figure 3 4 (the mapping described at block 304 of FIG), which may include the UE configuring at least one of receive path 452 or receive path 454 to be electrically coupled to at least one of antenna 426 or antenna 428. For example, in some aspects, the UE may configure at least one of switch 444 or switch 446 to electrically couple at least one of receive path 452 or receive path 454 to at least one of antenna 426 or antenna 428. Figure 4B As shown, the UE can configure receive path 452 to be electrically coupled to antenna 426, and can configure receive path 454 to be electrically coupled to antenna 428. Figure 4B In the embodiment, the UE may allocate at least one of antenna 426 or antenna 428 for receiving information associated with the second SIM. Figure 4B in Figure 3 The second one or more antennas shown at block 304 of FIG. 304 may refer to antennas 426 and 428. However, in general, the second one or more antennas may refer to a subset of antennas available to the UE for transmitting information and may not be limited to only two antennas in each aspect. In some aspects, the UE may use only one of antennas 426 or 428, and therefore only one of receive paths 452 or 454, to receive information associated with the second SIM during a time period when the UE is scheduled to monitor a channel associated with the second SIM. In additional aspects, the UE may use both antennas 426 and 428, and therefore both receive paths 452 and 454, to receive information associated with the second SIM during a time period when the UE is scheduled to monitor a channel associated with the second SIM.

[0072] like Figure 4B As shown, in some aspects, the transmit path 404 mapped to one of the antennas 422 or 424 may be based on antenna switching diversity, and at least one of the receive paths 452 or 454 mapped to at least one of the antennas 426 or 428 (such as at block 304) may prevent antenna switching conflicts from occurring when the UE concurrently performs wireless communications associated with the first SIM and wireless communications associated with the second SIM. For example, Figure 4B , transmit path 404 is mapped to the first one or more antennas (antennas 422 and 424) such that the mapping does not affect (e.g., reconfigure) the mapping of at least one receive path (receive path 452 or 454) to the second one or more antennas (antennas 426 and 428). Similarly, at least one receive path (receive path 452 or 454) may be mapped to the second one or more antennas (antennas 426 and 428) such that the mapping does not affect (e.g., reconfigure) the mapping of transmit path 404 to one of the first one or more antennas (antennas 422 and 424).

[0073] Figure 5A Shown is a block diagram illustrating an example of FDD antenna switching diversity in accordance with some aspects of the present disclosure. Figure 5A A switch 502 is shown. Switch 502 may have a transmit path 504 as one input and a receive path 506 as another input. Transmit path 504 and receive path 506 may both be associated with wireless communications associated with a first SIM. For example, a UE may use transmit path 504 to transmit information to a base station and may use receive path 506 to receive information from the base station. Depending on whether information is being transmitted or received, switch 502 may electrically couple transmit path 504 or receive path 506 to input 511 of switch 510.

[0074] In some aspects, switch 510 can be used to electrically couple the output of switch 502 to one of outputs 512, 514, 516, and 518 of switch 510. Figure 5A As shown, each of the outputs 512 , 514 , 516 , and 518 of the switch 510 may be electrically coupled to a different antenna 522 , 524 , 526 , and 528 , respectively.

[0075] According to some aspects, when switch 502 selects transmit path 504, the UE can utilize an antenna switching diversity scheme to determine which of the outputs of switch 510, and therefore which of the associated antennas, should be electrically coupled to input 511 to transmit information on transmit path 504. Figure 5A In the embodiment, the UE can utilize the antenna switching diversity scheme to determine which of the antennas 522, 524, 526 and 528 should be used as the transmit antenna. Figure 5A As shown, the UE may utilize an antenna switching diversity scheme to determine that antenna 524 should be used as the transmit antenna for transmitting information associated with the first SIM. As such, switch 510 may be configured to couple output 514 of switch 510, which is coupled to antenna 524, to input 511, such that antenna 524 may be used to transmit information from transmit path 504 associated with the first SIM.

[0076] In some aspects, the UE may be free to subsequently change the antenna to transmit path configuration. For example, in some aspects, when the UE determines that a different antenna (such as antenna 526) is more suitable than antenna 524 as a transmit antenna for transmitting information on transmit path 504, the UE may subsequently electrically couple transmit path 504 to a different antenna (such as antenna 526). Thus, in some aspects, as the communication environment changes, the UE may change transmit antennas to ensure that the best antenna or one of the best antennas is being used to transmit information.

[0077] According to some aspects, when switch 502 selects receive path 506, the UE may not utilize an antenna switching diversity scheme to select the best antenna to couple to receive path 506 to receive information from a base station. For example, in some aspects, a switch for performing FDD antenna switching diversity may be configured to couple primary receive path 506 associated with primary transmit path 504 to the same output that was coupled to input 511 when switch 502 selected transmit path 504, for example, via a switch that selects between the two paths. For example, referring to Figure 5A , since the UE configures the switch 510 to electrically couple the transmit path 504 at its input 511 to the output 514 and, therefore, also to the antenna 524, when the switch 502 couples the receive path 506 to the input 511 of the switch 410, the UE may also configure the switch 510 to electrically couple the receive path 506 at its input 511 to the output 514 and, therefore, also to the antenna 524. According to some aspects, the coupling configuration (i.e., receive path 506 to antenna 524) may be subsequently changed by the switch 510 only when the coupling configuration between the transmit path 504 and the antenna changes. As a result, in some aspects, even when the switch 502 switches between the transmit path 504 and the receive path 506, the coupling configuration between the input 511 and the output of the switch 510 does not change. In some aspects, the additional receive path used by the UE to receive information associated with the first SIM concurrently with the receive path 506 may be coupled to a different antenna. For example, in Figure 5A , second receive path 532, third receive path 534, and fourth receive path 536 may be capable of coupling to antenna 526, antenna 522, and antenna 528, respectively.

[0078] In some aspects (such as Figure 3 302 ), the UE may communicate (e.g., transmit) via a transmit path that is mapped to one of the UE antennas based on a determination that the UE may utilize FDD antenna switching diversity when the UE concurrently performs wireless communications associated with the first SIM and wireless communications associated with the second SIM. For example, a UE coupling the transmit path to one of the UE's antennas using switch 510 may determine that it supports FDD antenna switching diversity when concurrently performing wireless communications associated with the first SIM and wireless communications associated with the second SIM. As shown in Figure 3As shown at block 304 of , according to some aspects, based on a determination that the UE supports FDD antenna switching diversity when the UE concurrently performs wireless communications associated with the first SIM and wireless communications associated with the second SIM, the UE may communicate (e.g., receive) via at least one receive path associated with the second SIM; the at least one receive path may be mapped to the second one or more antennas based on the determination that the UE can utilize FDD antenna switching diversity.

[0079] As an example, Figure 5B A block diagram illustrating an example of FDD antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure is shown. In some aspects, Figure 5B It may be shown how a transmit path associated with a first SIM may be mapped to one of a first one or more antennas and how at least one receive path associated with a second SIM may be mapped to a second one or more antennas, so as to prevent antenna switching conflicts from occurring when the UE concurrently performs wireless communications associated with the first SIM and wireless communications associated with the second SIM.

[0080] like Figure 5B As shown, the transmit path associated with the first SIM is mapped to one of the first one or more antennas (such as in FIG. 1 ) based on the determination that the UE supports FDD antenna switching diversity. Figure 3 The mapping described at block 304 of FIG. 5 may include the UE configuring switches 502 and 510 to electrically couple transmit path 504 to one of antennas 522, 524, 526, or 528. In other words, Figure 5B in Figure 3 The first one or more antennas shown at block 304 of FIG. 5 may refer to antennas 522, 524, 526, and 528. However, in general, the first one or more antennas may refer to a subset or all of the antennas available to the UE for transmitting information. In some aspects, the UE may utilize an antenna switching diversity scheme to determine which of antennas 522, 524, 526, or 528 should be electrically coupled to the transmit path 504. Thus, in some aspects, the transmit path associated with the first SIM is mapped to one of the first one or more antennas (such as in FIG. 5 ). Figure 3 The mapping described at block 304 of FIG. 10 may include allocating the first one or more antennas by the UE for antenna switching diversity. Figure 5B In the aspect of FIG. 5 , the UE has selected to electrically couple antenna 524 to transmit path 504 based on antenna switching diversity.

[0081] exist Figure 5BIn some aspects, receive path 552 and receive path 554 can be associated with the second SIM. For example, the UE can use at least one of receive path 552 or 554 to receive information associated with the second SIM. In some aspects, at least one of receive path 552 or 554 can be used to receive information associated with the second SIM during a time period when the UE is scheduled to monitor the channel for possible information to be received. In some aspects, receive path 552 can be duplexed with third receive path 534 associated with the first SIM, and receive path 554 can be duplexed with receive path 506 associated with the first SIM.

[0082] According to some aspects, during multi-SIM concurrent operation, the UE may need to use at least one antenna for wireless communications associated with the second SIM, for example, to receive information associated with the second SIM using at least one of receive paths 552 or 554 during a time period when the UE is scheduled to monitor a channel associated with the second SIM. Figure 5B As shown, at least one receive path associated with the second SIM is mapped to the second one or more antennas (such as in FIG. 1 ) based on a determination that the UE supports FDD antenna switching diversity. Figure 3 At least one receive path described at block 304 of the UE may be mapped to the second one or more antennas) may include the UE configuring at least one of receive path 552 or receive path 554 to be electrically coupled to at least one of antenna 522 or antenna 524. For example, in some aspects, the UE may configure switch 510 to electrically couple at least one of receive path 552 or receive path 554 to at least one of antenna 522 or antenna 524. Figure 5B As shown, the UE can configure receive path 552 to be electrically coupled to antenna 522, and can configure receive path 554 to be electrically coupled to antenna 524. Figure 5B In the embodiment, the UE may allocate at least one of antenna 522 or antenna 524 for receiving information associated with the second SIM. Figure 5B in Figure 3The second one or more antennas shown at block 304 may refer to antennas 522 and 524. However, in general, the second one or more antennas may refer to a subset of antennas available to the UE for transmitting information and may not be limited to only two antennas in each aspect. In some aspects, the UE may use only one of antennas 522 or 524, and therefore only one of receive paths 552 or 554, to receive information associated with the second SIM during a time period when the UE is scheduled to monitor a channel associated with the second SIM. In additional aspects, the UE may use both antennas 522 and 524, and therefore both receive paths 552 and 554, to receive information associated with the second SIM during a time period when the UE is scheduled to monitor a channel associated with the second SIM.

[0083] like Figure 5B As shown, in some aspects, mapping the transmit path 504 to one of the antennas 522, 524, 526, and 528 and mapping at least one of the receive paths 552 or 554 to at least one of the antennas 524 or 522 based on antenna switching diversity (such as at block 304) can prevent antenna switching conflicts from occurring when the UE concurrently performs wireless communications associated with the first SIM and wireless communications associated with the second SIM. For example, Figure 5B , the mapping of transmit path 504 to the first one or more antennas (antennas 522, 524, 526, or 528) may not affect (e.g., reconfigure) the mapping of at least one receive path (receive path 552 or 554) to the second one or more antennas (antennas 552 and 524). Similarly, the mapping of at least one receive path (receive path 552 or 554) to the second one or more antennas (antennas 522 and 524) may not affect (e.g., reconfigure) the mapping of transmit path 504 to one of the first one or more antennas (antennas 522, 524, 526, or 528).

[0084] In some aspects, the UE may determine in various ways whether it supports FDD or TDD antenna switching diversity when it concurrently performs wireless communications associated with a first SIM and wireless communications associated with a second SIM. For example, in some aspects, the determination at block 302 may be based on the UE's determination of whether a primary receive path can be mapped to an antenna different from that mapped to a primary transmit path. If so, the UE may determine that the UE supports TDD antenna switching diversity. If not, the UE may determine that the UE supports FDD antenna switching diversity. In additional aspects, the determination at block 302 may be based on the UE's determination of whether the mapping of receive paths associated with the first SIM to antennas can be changed. If so, the UE may determine that the UE supports FDD antenna switching diversity. If not, the UE may determine that the UE supports TDD antenna switching diversity.

[0085] According to some aspects, when the UE supports FDD antenna switching diversity, the first one or more antennas (such as the first one or more antennas shown at block 304) may include more antennas than when the UE supports TDD antenna switching diversity. For example, Figure 5B The first one or more antennas associated with FDD antenna switching diversity include four antennas (antennas 522, 524, 526, and 528), and Figure 4B The first one or more antennas associated with TDD antenna switching diversity include two antennas (antennas 422 and 424).

[0086] In some aspects, the second one or more antennas (such as the second one or more antennas shown at block 304) may comprise a subset of the first one or more antennas. For example, in conjunction with FDD antenna switching diversity Figure 5B , the second one or more antennas (antennas 522 and 524) may be a subset of the first one or more antennas (antennas 522, 524, 526, and 528).

[0087] According to some aspects, the second one or more antennas (such as the second one or more antennas shown at block 304) may not include the first one or more antennas. For example, in conjunction with TDD antenna switching diversity Figure 4B In the embodiment, the second one or more antennas (antennas 426 and 428) may not include the first one or more antennas (antennas 422 and 424).

[0088] In some aspects, the UE may also determine whether antenna switching diversity (whether TDD-based or FDD-based) is limited. For example, in some aspects, hardware limitations or communication constraints / requirements may limit the range of antenna switching diversity that can be used for wireless communications. In some aspects, the UE may determine whether there are hardware limitations or communication constraints / requirements that limit the range of antenna switching diversity that can be used for wireless communications.

[0089] According to some aspects, based on the determination as to whether antenna switching diversity is limited, the UE may perform mapping of transmit paths associated with the first SIM (such as in Figure 3 304) or a mapping of at least one receive path associated with the second SIM (such as at Figure 3 For example, in some aspects, when the UE determines that antenna switching diversity is limited, the UE may allocate fewer antennas to the first one or more antennas for antenna switching diversity than when the UE determines that antenna switching diversity is not limited. As a result, in some aspects, when the UE determines that antenna switching diversity is limited, the UE may allocate more antennas to the second one or more antennas for wireless communications associated with the second SIM than when the UE determines that antenna switching diversity is not limited.

[0090] In some aspects, the UE may also determine whether one or more of the second one or more antennas are required for wireless communications associated with the second SIM. For example, in some aspects, hardware limitations or communication constraints / requirements may require that two antennas be used for wireless communications associated with the second SIM. In additional aspects, hardware limitations or communication constraints / requirements may dictate that only one antenna is required for wireless communications associated with the second SIM. As an example, the UE may determine that only one antenna is required for wireless communications associated with the second SIM when the signal power or signal-to-noise ratio (SNR) associated with wireless communications associated with the second SIM is greater than (or equal to) a certain threshold. In some aspects, the UE may determine whether one or more of the second one or more antennas are required for wireless communications associated with the second SIM based on hardware limitations or communication constraints / requirements associated with wireless communications associated with the second SIM.

[0091] According to some aspects, the UE may perform mapping of transmit paths associated with the first SIM based on a determination as to whether one or more of the second one or more antennas are required for wireless communications associated with the second SIM (such as in Figure 3 304) or a mapping of at least one receive path associated with the second SIM (such as at Figure 3304 of the embodiment of the present invention). For example, in some aspects, when the UE determines that more antennas are needed for wireless communications associated with the second SIM, the UE may allocate more antennas to the second one or more antennas used for wireless communications associated with the second SIM. As a result, in some aspects, when the UE determines that more antennas are needed for wireless communications associated with the second SIM, the UE may allocate fewer antennas to the first one or more antennas for antenna switching diversity. In additional aspects, when the UE determines that fewer antennas (e.g., one antenna) are needed for wireless communications associated with the second SIM, the UE may allocate fewer antennas (e.g., one antenna) to the second one or more antennas used for wireless communications associated with the second SIM. As a result, in some aspects, when the UE determines that fewer antennas (e.g., one antenna) are needed for wireless communications associated with the second SIM, the UE may allocate more antennas to the first one or more antennas for antenna switching diversity.

[0092] In some aspects, the mapping of the transmit path associated with the first SIM to one of the first one or more antennas can be performed at least semi-cooperatively (such as in Figure 3 304) and a mapping of at least one receive path associated with the second SIM to the second one or more antennas (such as at Figure 3 304). For example, in some aspects, the UE may map a transmit path associated with the first SIM to one of the first one or more antennas based on a mapping of at least one receive path associated with the second SIM to the second one or more antennas. In additional aspects, the UE may map at least one receive path associated with the second SIM to the second one or more antennas based on a mapping of the transmit path associated with the first SIM to one of the first one or more antennas.

[0093] Figure 6 Another block diagram illustrating an example of FDD antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure. For example, Figure 6 Various ways are shown in which at least one receive path associated with a second SIM may be mapped to a second one or more antennas while a transmit path associated with a first SIM is mapped to one of a first one or more antennas. Figure 6 It is also shown that various switching hardware can be utilized to couple the transmit paths and / or receive paths associated with the first SIM and / or the second SIM to different antennas. Figure 6 In the embodiment, two switching components are used to electrically couple the transmit path and / or receive path associated with the first SIM and / or the second SIM to different antennas. As an example, in Figure 6In FIG, switch XSW 1 can be associated with antenna 4 and antenna 2, and switch XSW 2 can be associated with antenna 1 and antenna 3. Figure 6 As shown, when the transmit or receive path at the input to one of the switches needs to be electrically coupled to an antenna associated with another switching component, the switches can be coupled to each other to create the required switching configuration. For example, the output of one switch can be coupled to the input of another switch.

[0094] Figure 7 Another block diagram illustrates an example of FDD antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure. Figure 7 Can be shown with Figure 6 The physical architecture is similar to the architecture shown in , but Figure 7 Different switching configurations are shown. Figures 4A to 7 As shown, numerous physical architectures and switching configurations may couple the transmit path and / or receive path associated with the first SIM and / or the second SIM to different antennas. Therefore, one of ordinary skill in the art will readily recognize that various architectures and configurations not shown in the drawings of the present disclosure may still fall within the scope of the present disclosure as long as they perform the functions disclosed herein.

[0095] Figure 8A and Figure 8B A state diagram illustrating an example of states for antenna switching diversity and multi-SIM concurrent operation management according to some aspects of the present disclosure is shown. In some aspects, Figure 3 The method 300 may include Figure 8A and Figure 8B One or more of the operations shown in the state diagram.

[0096] Figure 9 A block diagram conceptually illustrating an example of a design of a UE configured according to some aspects of the present disclosure is shown. The UE 115 may be configured to perform operations including referring to Figure 3 In some implementations, the UE 115 includes a block of the method 300 described herein. Figures 1 to 2 or Figures 4A to 7 1 and 2. The UE 115 of FIG. 1 is a block diagram of a UE 115. ... Figure 2 and Figures 4A to 71. The various components and hardware shown for UE 115 in FIG. 1 include modulators and demodulators 254a-r, MIMO detector 256, receive processor 258, transmit processor 264, and TX MIMO processor 266.

[0097] The communication manager 910 may include determination logic 902 and mapping logic 903. Portions of one or more of the components 902 and 903 may be implemented at least in part in hardware or software. In some implementations, at least one of the components 902 and 903 is implemented at least in part as software stored in a memory, such as the memory 282. For example, portions of one or more of the components 902 and 903 may be implemented as non-transitory instructions or code that are executable by a processor, such as the controller 280, to perform the functions or operations of the corresponding component.

[0098] As previously described, one or more of the components 902 and 903 shown in the communications manager 910 may be connected to the processor / controller 280 and the Figures 1 to 2 and Figures 4A to 7 The other components shown in FIG are configured to perform one or more processes related to wireless communications by UE 115. For example, the determination logic 902 may be configured to determine whether the controller / processor 280 and the Figures 1 to 2 and Figures 4A to 7 The other components shown in FIG are configured to perform operations including communicating via a transmit path (e.g., transmitting using antennas 252a-r) that is associated with the first SIM and mapped to one or more antennas of the UE based on determining whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity when concurrently performing wireless communications associated with the first SIM and wireless communications associated with the second SIM, such as with reference to block 302 (see FIG. Figure 3 ). Determination logic 902 may be configured to include the controller / processor 280 and the Figures 1 to 2 and Figures 4A to 7 The other components shown in FIG are configured to perform operations including communicating via a receive path (e.g., receiving using antennas 252a-r) that is associated with the second SIM and mapped to one or more antennas of the UE based on determining whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

[0099] Additionally, mapping logic 903 can map the controller / processor 280 to the Figures 1 to 2 and Figures 4A to 7The other components shown in FIG are configured to perform operations including mapping a transmit path associated with the first SIM to one of the first one or more antennas based on at least one of whether the UE supports FDD antenna switching diversity or TDD antenna switching diversity, such as with reference to block 304 (see FIG. Figure 3 ). In addition, mapping logic 903 can map the controller / processor 280 and Figures 1 to 2 and Figures 4A to 7 The other components shown in are configured to perform operations including mapping at least one receive path associated with the second SIM to a second one or more antennas based on at least one of whether the UE supports FDD antenna switching diversity or TDD antenna switching diversity, wherein the mapping of the transmit path and the at least one receive path may be performed to prevent antenna switching conflicts from occurring when wireless communications associated with the first SIM and wireless communications associated with the second SIM are concurrently performed, such as with reference to block 304 (see Figure 3 ). UE 115 can receive data from one or more network entities (such as Figures 1 to 2 The base station 105) receives signals or sends signals to one or more network entities.

[0100] It should be noted that reference Figure 3 One or more blocks (or operations) described in FIG. 1 may be combined with one or more blocks (or operations) described in another figure with reference to these figures. Figure 3 One or more boxes (or operations) of Figures 1 to 2 or Figures 4A to 9 As another example, with one or more boxes (or operations) of Figure 9 One or more boxes can be associated with Figures 1 to 8B One or more related boxes (or operations) are combined.

[0101] In some aspects, techniques for antenna switching diversity and managing concurrent operations of multiple SIMs may include: a UE determining whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity when concurrently performing wireless communications associated with a first SIM and wireless communications associated with a second SIM. The techniques for antenna switching diversity and managing concurrent operations of multiple SIMs may also include: the UE mapping a transmit path associated with the first SIM to one of the first one or more antennas based on the determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity. The techniques for antenna switching diversity and managing concurrent operations of multiple SIMs may also include: the UE mapping at least one receive path associated with the second SIM to the second one or more antennas based on the determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity. In some aspects, mapping the transmit path and the at least one receive path may be performed to prevent antenna switching conflicts when concurrently performing wireless communications associated with the first SIM and wireless communications associated with the second SIM.

[0102] In one or more aspects, techniques for antenna switching diversity and multi-SIM concurrent operation management may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other procedures described elsewhere herein. In a first aspect, techniques for antenna switching diversity and multi-SIM concurrent operation management may include communicating via a transmit path associated with a first subscriber identity module (SIM); the transmit path may be mapped to one of the first one or more antennas based on a determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity when wireless communications associated with the first SIM and wireless communications associated with a second SIM are concurrently performed. These techniques may also include communicating via at least one receive path associated with the second SIM; the at least one receive path may be mapped to the second one or more antennas based on a determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

[0103] In a second aspect, in combination with the first aspect, a transmit path and at least one receive path are respectively mapped to one of the first one or more antennas and one of the second one or more antennas to prevent antenna switching conflicts from occurring when wireless communication associated with the first SIM and wireless communication associated with the second SIM are concurrently performed.

[0104] In a third aspect, in combination with the second aspect, the antenna switching conflict includes reconfiguration of a transmission path or reconfiguration of at least one reception path.

[0105] In a fourth aspect, in combination with one or more of the first or second aspects, when the UE supports FDD antenna switching diversity, the first one or more antennas include more antennas than when the UE supports TDD antenna switching diversity.

[0106] In a fifth aspect, in combination with one or more of the first to fourth aspects, the second one or more antennas comprise a subset of the first one or more antennas.

[0107] In a sixth aspect, in combination with one or more of the first to fifth aspects, the second one or more antennas do not include the first one or more antennas.

[0108] In a seventh aspect, in combination with one or more of the first to sixth aspects, at least one of a transmit path associated with the first SIM or at least one receive path associated with the second SIM is mapped based on a determination as to whether antenna switching diversity is limited, wherein, when antenna switching diversity is limited, the first one or more antennas include fewer antennas than when antenna switching diversity is not limited.

[0109] In an eighth aspect, in combination with one or more of the first to seventh aspects, at least one receive path is mapped to an additional second one or more antennas based on a determination that the additional second one or more antennas are needed for wireless communications associated with the second SIM, and wherein the transmit path is mapped to a reduced number of the first one or more antennas based on a determination that the additional second one or more antennas are needed for wireless communications associated with the second SIM.

[0110] Those skilled in the art will appreciate that information and signals may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0111] The components, functional blocks, and modules described herein (eg, Figure 2 The components, functional blocks, and modules in the present invention may include: processors, electronic devices, hardware devices, electronic components, logical circuits, memories, software codes, firmware codes, etc., or any combination thereof. In addition, the features discussed herein may be implemented via dedicated processor circuits, via executable instructions, and / or a combination thereof.

[0112] Those of skill will also appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps (e.g., Figure 3The logic blocks in the ) can be implemented as electronic hardware, computer software, or a combination of the two. In order to clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been generally described above around their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system. Technicians can implement the described functionality in different ways for each specific application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure. It will also be readily appreciated by technicians that the order or combination of components, methods, or interactions described herein are merely examples, and that the components, methods, or interactions of various aspects of the present disclosure may be combined or performed in a manner different from those shown and described herein.

[0113] The various illustrative logic blocks, modules, and circuits described in conjunction with the disclosure herein may be implemented or performed using a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in combination with a DSP core, or any other such configuration.

[0114] The steps of the method or algorithm described in conjunction with the disclosure herein can be directly embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software module can be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. In an alternative manner, the storage medium can be an integral part of the processor. The processor and the storage medium can be located in an ASIC. The ASIC can be located in a user terminal. In an alternative manner, the processor and the storage medium can be present in the user terminal as discrete components.

[0115] In one or more exemplary designs, the functions described can be implemented with hardware, software, firmware or any combination thereof. If implemented with software, the functions can be stored on a computer-readable medium or transmitted as one or more instructions or codes. Computer-readable media include both computer storage media and communication media, and the communication media include any media that promotes the transfer of a computer program from one place to another. Computer-readable storage media can be any available medium that can be accessed by a general or special-purpose computer. By way of example and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices, or can be used to carry or store desired program code units with instruction or data structure forms and any other medium that can be accessed by a general or special-purpose computer or a general or special-purpose processor. In addition, the connection can be appropriately referred to as a computer-readable medium. For example, if software is sent from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair or digital subscriber line (DSL), the coaxial cable, fiber optic cable, twisted pair or DSL are included in the definition of the medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), hard disk, solid state disk and Blu-ray disc, wherein disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0116] As used herein, including in the claims, the term "and / or," when used in a list of two or more items, means that any one of the listed items may be taken on its own, or any combination of two or more of the listed items may be taken. For example, if a composition is described as containing the components A, B, and / or C, the composition may contain: only A; only B; only C; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C. Furthermore, as used herein, including in the claims, "or," as used in a list of items ending with "at least one of," indicates a disjunctive list such that, for example, a list of "at least one of A, B, or C" means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) or any combination of any of these items.

[0117] The foregoing description of the present disclosure is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the overall principles defined herein may be applied to other variations without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication performed by a user equipment (UE), the method comprising: communicating via a transmit path associated with a first subscriber identity module (SIM), the transmit path mapped to one of first one or more antennas based on a determination as to whether the UE supports at least one of frequency division duplex (FDD) antenna switching diversity or time division duplex (TDD) antenna switching diversity when concurrently performing wireless communications associated with the first SIM and wireless communications associated with a second SIM; as well as Communicating via at least one receive path associated with the second SIM, the at least one receive path mapped to a second one or more antennas based on the determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

2. The method according to claim 1, wherein The transmit path and the at least one receive path are mapped to one of the first one or more antennas and one of the second one or more antennas, respectively, to prevent antenna switching conflicts from occurring when wireless communications associated with the first SIM and wireless communications associated with the second SIM are concurrently performed.

3. The method according to claim 2, wherein: The antenna switching conflict includes reconfiguration of the transmission path or reconfiguration of the at least one reception path.

4. The method according to claim 1, wherein The first one or more antennas include more antennas when the UE supports FDD antenna switching diversity than when the UE supports TDD antenna switching diversity.

5. The method according to claim 1, wherein The second one or more antennas comprise a subset of the first one or more antennas.

6. The method according to claim 1, wherein The second one or more antennas do not include the first one or more antennas.

7. The method according to claim 1, wherein At least one of the transmit path associated with the first SIM or the at least one receive path associated with the second SIM is mapped based on a determination as to whether antenna switching diversity is limited, wherein when antenna switching diversity is limited, the first one or more antennas include fewer antennas than when antenna switching diversity is not limited.

8. The method according to claim 1, wherein The at least one receive path is mapped to the additional second one or more antennas based on a determination that the additional second one or more antennas are needed for wireless communications associated with the second SIM, and wherein the transmit path is mapped to a reduced number of the first one or more antennas based on the determination that the additional second one or more antennas are needed for wireless communications associated with the second SIM.

9. A user equipment (UE) configured for wireless communication, comprising: means for communicating via a transmit path associated with a first subscriber identity module (SIM), the transmit path being mapped to one of first one or more antennas based on a determination as to whether the UE supports at least one of frequency division duplex (FDD) antenna switching diversity or time division duplex (TDD) antenna switching diversity when concurrently performing wireless communications associated with the first SIM and wireless communications associated with a second SIM; as well as Means for communicating via at least one receive path associated with the second SIM, the at least one receive path mapped to second one or more antennas based on the determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

10. The UE according to claim 9, wherein: The transmit path and the at least one receive path are mapped to one of the first one or more antennas and one of the second one or more antennas, respectively, to prevent antenna switching conflicts from occurring when wireless communications associated with the first SIM and wireless communications associated with the second SIM are concurrently performed.

11. The UE according to claim 10, wherein: The antenna switching conflict includes reconfiguration of the transmission path or reconfiguration of the at least one reception path.

12. The UE according to claim 9, wherein: The first one or more antennas include more antennas when the UE supports FDD antenna switching diversity than when the UE supports TDD antenna switching diversity.

13. The UE according to claim 9, wherein: The second one or more antennas do not include the first one or more antennas.

14. The UE according to claim 9, wherein: At least one of the transmit path associated with the first SIM or the at least one receive path associated with the second SIM is mapped based on a determination as to whether antenna switching diversity is limited, wherein when antenna switching diversity is limited, the first one or more antennas include fewer antennas than when antenna switching diversity is not limited.

15. The UE according to claim 9, wherein: The at least one receive path is mapped to the additional second one or more antennas based on a determination that the additional second one or more antennas are needed for wireless communications associated with the second SIM, and wherein the transmit path is mapped to a reduced number of the first one or more antennas based on the determination that the additional second one or more antennas are needed for wireless communications associated with the second SIM.

16. The UE according to claim 9, wherein: The second one or more antennas comprise a subset of the first one or more antennas.

17. A non-transitory computer-readable medium having program code recorded thereon, the program code comprising: program code executable by a computer for causing the computer to communicate via a transmission path associated with a first subscriber identity module (SIM), the transmission path being mapped to one of first one or more antennas based on a determination as to whether a user equipment (UE) supports at least one of frequency division duplex (FDD) antenna switching diversity or time division duplex (TDD) antenna switching diversity when concurrently performing wireless communications associated with the first SIM and wireless communications associated with a second SIM; as well as and program code executable by the computer to cause the computer to communicate via at least one receive path associated with the second SIM, the at least one receive path mapped to second one or more antennas based on the determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

18. The non-transitory computer-readable medium of claim 17, wherein: The transmit path and the at least one receive path are mapped to one of the first one or more antennas and one of the second one or more antennas, respectively, to prevent antenna switching conflicts from occurring when wireless communications associated with the first SIM and wireless communications associated with the second SIM are concurrently performed.

19. The non-transitory computer-readable medium of claim 18, wherein: The antenna switching conflict includes reconfiguration of the transmission path or reconfiguration of the at least one reception path.

20. The non-transitory computer-readable medium of claim 17, wherein: The first one or more antennas include more antennas when the UE supports FDD antenna switching diversity than when the UE supports TDD antenna switching diversity.

21. The non-transitory computer-readable medium of claim 17, wherein: The second one or more antennas comprise a subset of the first one or more antennas.

22. The non-transitory computer-readable medium of claim 17, wherein: The second one or more antennas do not include the first one or more antennas.

23. The non-transitory computer readable medium of claim 17, wherein: At least one of the transmit path associated with the first SIM or the at least one receive path associated with the second SIM is mapped based on a determination as to whether antenna switching diversity is limited, wherein when antenna switching diversity is limited, the first one or more antennas include fewer antennas than when antenna switching diversity is not limited.

24. The non-transitory computer readable medium of claim 17, wherein: The at least one receive path is mapped to the additional second one or more antennas based on a determination that the additional second one or more antennas are needed for wireless communications associated with the second SIM, and wherein the transmit path is mapped to a reduced number of the first one or more antennas based on the determination that the additional second one or more antennas are needed for wireless communications associated with the second SIM.

25. A user equipment (UE), comprising: at least one processor; as well as at least one memory communicatively coupled to the at least one processor and storing processor-readable code that, when executed by the at least one processor, is configured to: communicating via a transmit path associated with a first subscriber identity module (SIM), the transmit path mapped to one of first one or more antennas based on a determination as to whether the UE supports at least one of frequency division duplex (FDD) antenna switching diversity or time division duplex (TDD) antenna switching diversity when concurrently performing wireless communications associated with the first SIM and wireless communications associated with a second SIM; as well as Communicating via at least one receive path associated with the second SIM, the at least one receive path mapped to a second one or more antennas based on the determination of whether the UE supports at least one of FDD antenna switching diversity or TDD antenna switching diversity.

26. The UE according to claim 25, wherein: The transmit path and the at least one receive path are mapped to one of the first one or more antennas and one of the second one or more antennas, respectively, to prevent antenna switching conflicts from occurring when wireless communications associated with the first SIM and wireless communications associated with the second SIM are concurrently performed.

27. The UE according to claim 26, wherein: The antenna switching conflict includes reconfiguration of the transmission path or reconfiguration of the at least one reception path.

28. The UE according to claim 25, wherein The first one or more antennas include more antennas when the UE supports FDD antenna switching diversity than when the UE supports TDD antenna switching diversity.

29. The UE according to claim 25, wherein The second one or more antennas comprise a subset of the first one or more antennas.

30. The UE according to claim 25, wherein At least one of the transmit path associated with the first SIM or the at least one receive path associated with the second SIM is mapped based on a determination as to whether antenna switching diversity is limited, wherein when antenna switching diversity is limited, the first one or more antennas include fewer antennas than when antenna switching diversity is not limited.

31. The UE according to claim 25, wherein The at least one receive path is mapped to the additional second one or more antennas based on a determination that the additional second one or more antennas are needed for wireless communications associated with the second SIM, and wherein the transmit path is mapped to a reduced number of the first one or more antennas based on the determination that the additional second one or more antennas are needed for wireless communications associated with the second SIM.

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