Waveform-specific transmitter

Abstract

Methods, systems, and devices for wireless communications are described. In some systems, a base station may configure a set of transmitters, each including a different set of time domain resources, or a different set of frequency domain resources, or both, and may specify a waveform type for each of the set of transmitters. In some examples, a base station may configure a set of transmitters for a user equipment (UE), and in response, the UE and the base station may communicate via a transmitter of the set of transmitters via signaling based on a waveform type associated with the transmitter through which the UE and the base station communicate. The base station may control the transmitters of the set of transmitters through which the UE and the base station communicate via configured timers or via explicit activation and deactivation signaling.

Description

[Technical Field]

[0001] cross reference This patent application claims the benefit of U.S. patent application Ser. No. 17 / 226,810, entitled "WAVEFORM-SPECIFIC TRANSMISSION PARTS," filed April 9, 2021, by Sakhnini et al., which is assigned to the assignee of the present application.

[0002] The following relates to wireless communications, including waveform-specific transmitters. [Background technology]

[0003] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasts, and so on. These systems may be capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth-generation (4G) systems, such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), or LTE-A Pro systems, and fifth-generation (5G) systems, sometimes referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communication system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, which may in some cases be known as user equipment (UE). Summary of the Invention [Means for solving the problem]

[0004] The described techniques relate to improved methods, systems, devices, and apparatus that support waveform-specific transmitters. Generally, the described techniques provide for organizing and scheduling waveform-specific communications between user equipment (UE) and base stations such that different UEs or the same UE can communicate with the base station via signaling based on different waveform types.

[0005] In some examples, for example, a network may configure a quantity of transmitters, each of which may correspond to a defined set of time and frequency resources. The transmitters may be either contiguous or non-contiguous in time and either contiguous or non-contiguous in frequency. Each transmitter may be associated with (e.g., configured for) a specified waveform type, such as a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or a multi-carrier frequency-domain waveform, among other possibilities. Thus, a UE may receive a configuration of one or more transmitters, which may indicate the waveform type the UE should use for communication within each of the one or more transmitters, such that different waveform types may be configured for different transmitters. In some implementations, each transmitter of a set of transmitters may be associated with a set of parameters in addition to the waveform type, such as a cyclic prefix (CP) length, a subcarrier spacing (SCS), a chip rate, or a switching gap, among others.

[0006] One or more transmitters may possibly be activated or deactivated for a UE over a sequence of time, such that the UE can communicate with a base station via different transmitters at different times (and thus, possibly, via signaling of different waveform types). Also, in some cases, two or more transmitters may be active in parallel for the same UE, with the UE potentially communicating with a base station in parallel via multiple transmitters (including potentially via signaling of different waveform types), depending on the capabilities of the UE. These and other aspects of the teachings herein may reduce associated scheduling complexity and provide mechanisms for stronger interference management for different UEs or the same UE using different waveform types within a wireless communications system, among other advantages that may be appreciated by those skilled in the art.

[0007] A method for wireless communication in a UE is described that may include receiving, from a base station, an indication of sets of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; communicating with the base station during a first time period via signaling based on the first waveform type via the first transmitter; and communicating with the base station during a second time period after the first time period via signaling based on the second waveform type via the second transmitter.

[0008] An apparatus for wireless communication in a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive from a base station indication of sets of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; communicate with the base station during a first time period via signaling based on the first waveform type via the first transmitter; and communicate with the base station during a second time period after the first time period via signaling based on the second waveform type via the second transmitter.

[0009] Another apparatus for wireless communication in a UE is described. The apparatus may include means for receiving from a base station an indication of sets of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; means for communicating with the base station during a first time period via signaling based on the first waveform type via the first transmitter; and means for communicating with the base station during a second time period after the first time period via signaling based on the second waveform type via the second transmitter.

[0010] A non-transitory computer-readable medium storing code for wireless communication in a UE is described, which may include instructions executable by a processor to receive from a base station indication of sets of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and where the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; communicate with the base station during a first time period via signaling based on the first waveform type via the first transmitter; and communicate with the base station during a second time period after the first time period via signaling based on the second waveform type via the second transmitter.

[0011] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a system information block (SIB) including a configuration of an initial transmitter that is different from the first transmitter and the second transmitter, where the SIB associates the initial transmitter with an initial waveform type that may be a first waveform type, a second waveform type, or a third waveform type; and communicating with a base station via signaling that may be based on the initial waveform type prior to the first time period via the initial transmitter.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving an indication of a default transmitter of a set of transmitters, where the default transmitter includes a first transmitter, and where communicating with a base station during a first time period via the first transmitter may be based on the indication of the default transmitter.

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving from a base station an activation message for one or more transmitters of a set of transmitters including a second transmitter, where communicating via the second transmitter associated with a second waveform type may be based on the activation message.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a deactivation message from a base station for one or more transmitters of the set of transmitters, and switching from communicating with the base station via a second transmitter associated with the second waveform type to communicating with the base station via a first transmitter associated with the first waveform type or to communicating with the base station via a third transmitter associated with a third waveform type based on the deactivation message.

[0015] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving from a base station an indication of a duration of a timer associated with one or more transmitters of the set of transmitters, where the one or more transmitters are each deactivated for the UE upon expiration of the timer, and switching from communicating with the base station via a second transmitter associated with the second waveform type to communicating with the base station via a first transmitter associated with the first waveform type or to communicating with the base station via a third transmitter associated with a third waveform type based on the expiration of the timer.

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first transmitter and the second transmitter may be active concurrently for the UE.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the set of transmitters may include a set of uplink-specific transmitters associated with a first set of uplink-specific communication parameters and a set of downlink-specific transmitters associated with a set of downlink-specific communication parameters.

[0018] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each transmitter of the set of transmitters may be for both uplink and downlink communications, and the instructions associate each transmitter of the set of transmitters with a respective set of communication parameters that may be common to the uplink and downlink communications.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, at least one of the first transmitter and the second transmitter may be discontinuous in time, and communicating with the base station via the first transmitter or the second transmitter may include communicating according to a communication time run that may be transparent to one or more time gaps associated with at least one of the first transmitter and the second transmitter that are discontinuous in time.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, at least one of the first transmitter and the second transmitter are non-contiguous in time, and communicating with the base station via the first transmitter or the second transmitter may include communicating according to a communication timeline that accounts for one or more time gaps associated with at least one of the first transmitter and the second transmitter that are non-contiguous in time.

[0021] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a grant from a base station for a transmission resource outside of one or more active transmitters of the set of transmitters, and communicating with the base station via a transmission resource that may be outside of the one or more active transmitters based on the grant.

[0022] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a grant from a base station for a transmission resource outside of one or more active transmitters of the set of transmitters, and refraining from communicating with the base station over a transmission resource that may be outside of the one or more active transmitters based on the grant.

[0023] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving from a base station a configuration of one or more switching gaps or one or more guard bands, each between a respective pair of transmitters in the set of transmitters, and switching, during a switching gap of the one or more switching gaps, from communicating with the base station via a first transmitter associated with a first waveform type to communicating with the base station via a second transmitter associated with a second waveform type.

[0024] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting a capability message to a base station indicating a set of waveform types that the UE may be able to use, where the indication of the set of transmitters may be based on the capability message.

[0025] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each set of time and frequency resources for a transmitter of a set of transmitters may be non-contiguous in time, may be non-contiguous in frequency, or may be non-contiguous in both time and frequency.

[0026] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first waveform type includes a first waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or an Orthogonal Frequency Division Multiplexing (OFDM) waveform, and the second waveform type includes a second waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or an OFDM waveform.

[0027] A method for wireless communications in a base station is described that may include transmitting, to a UE, an indication of a set of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; communicating with the UE during a first time period via signaling based on the first waveform type via the first transmitter; and communicating with the UE during a second time period after the first time period via signaling based on the second waveform type via the second transmitter.

[0028] An apparatus for wireless communication in a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to transmit to a UE indication of a set of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the instructions associate a first transmission of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; communicate with the UE during a first time period via signaling based on the first waveform type via the first transmitter; and communicate with the UE during a second time period after the first time period via signaling based on the second waveform type via the second transmitter.

[0029] Another apparatus for wireless communications in a base station is described. The apparatus may include means for transmitting to a UE an indication of sets of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; means for communicating with the UE during a first time period via signaling based on the first waveform type via the first transmitter; and means for communicating with the UE during a second time period after the first time period via signaling based on the second waveform type via the second transmitter.

[0030] A non-transitory computer-readable medium storing code for wireless communications in a base station is described, which may include instructions executable by a processor to transmit to a UE instructions of sets of transmitters, each including a respective set of time resources and frequency resources, where at least one of the time resources and frequency resources included within the respective set of time resources and frequency resources varies for each transmitter of the set of transmitters, and the instructions associate a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type;

[0031] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for: transmitting an SIB including a configuration of an initial transmitter that is different from the first transmitter and the second transmitter, the SIB associating the initial transmitter with an initial waveform type that may be a first waveform type, a second waveform type, or a third waveform type; and communicating with the UE via signaling that may be based on the initial waveform type prior to the first time period via the initial transmitter.

[0032] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting an indication of a default transmitter of a set of transmitters, where the default transmitter includes a first transmitter, and where communicating with the UE during a first time period via the first transmitter may be based on the indication of the default transmitter.

[0033] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting to the UE an activation message for one or more transmitters of a set of transmitters including a second transmitter, where communicating via the second transmitter associated with a second waveform type may be based on the activation message.

[0034] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for sending a deactivation message to the UE for one or more transmitters of the set of transmitters, and switching from communicating with the UE via the second transmitter associated with the second waveform type to communicating with the UE via the first transmitter associated with the first waveform type or to communicating with the UE via the third transmitter associated with the third waveform type based on sending the deactivation message.

[0035] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for: transmitting to the UE an indication of a duration of a timer associated with one or more transmitters, the one or more transmitters each being deactivated for the UE upon expiration of the timer; and, based on expiration of the timer, switching from communicating with the UE via a second transmitter associated with the second waveform type to communicating with the UE via a first transmitter associated with the first waveform type or to communicating with the UE via a third transmitter associated with the third waveform type.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first transmitter and the second transmitter may be active concurrently for the UE.

[0037] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the set of transmitters may include a set of uplink-specific transmitters associated with a set of uplink-specific communication parameters and a set of downlink-specific transmitters associated with a first set of downlink-specific communication parameters.

[0038] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each transmitter of the set of transmitters may be for both uplink and downlink communications, and the instructions associate each transmitter of the set of transmitters with a respective set of communication parameters that may be common to the uplink and downlink communications.

[0039] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, at least one of the first transmitter and the second transmitter may be discontinuous in time, and communicating with the UE via the first transmitter or the second transmitter may include communicating according to a communication time run that may be transparent to one or more time gaps associated with at least one of the first transmitter and the second transmitter that are discontinuous in time.

[0040] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, at least one of the first transmitter and the second transmitter may be non-contiguous in time, and communicating with the UE via the first transmitter or the second transmitter may include communicating according to a communication timeline that accounts for one or more time gaps associated with at least one of the first transmitter and the second transmitter that are non-contiguous in time.

[0041] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting a grant to the UE for a transmission resource outside of one or more active transmitters of the set of transmitters, and communicating with the UE via a transmission resource that may be outside of the one or more active transmitters based on the grant.

[0042] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting a configuration of one or more switching gaps or one or more guard bands to the UE, each between a respective pair of transmitters in the set of transmitters, and switching from communicating with the UE via a first transmitter associated with a first waveform type to communicating with the UE via a second transmitter associated with a second waveform type during a switching gap of the one or more switching gaps.

[0043] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a capability message from the UE indicating a set of waveform types that the UE may be able to use, where the indication of the set of transmitters may be based on the capability message.

[0044] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each set of time and frequency resources for a transmitter of a set of transmitters may be non-contiguous in time, may be non-contiguous in frequency, or may be non-contiguous in both time and frequency.

[0045] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first waveform type includes a first waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or an OFDM waveform, and the second waveform type includes a second waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or an OFDM waveform. [Brief explanation of the drawings]

[0046] [Figure 1] FIG. 1 illustrates an example of a wireless communication system supporting waveform-specific transmitters, according to aspects of the present disclosure. [Figure 2] FIG. 1 illustrates an example of a wireless communication system supporting waveform-specific transmitters, according to aspects of the present disclosure. [Figure 3] FIG. 1 illustrates an example communication timeline supporting waveform-specific transmit sections, according to aspects of the present disclosure. [Figure 4] FIG. 10 illustrates an example process flow for supporting a waveform-specific transmit section, according to aspects of the present disclosure. [Figure 5] FIG. 1 is a block diagram of a device supporting a waveform-specific transmitter, according to an aspect of the present disclosure. [Figure 6] FIG. 1 is a block diagram of a device supporting a waveform-specific transmit section, according to an aspect of the present disclosure. [Figure 7] FIG. 12 is a block diagram of a communications manager supporting waveform-specific transmitters according to an aspect of the present disclosure. [Figure 8] FIG. 1 is a diagram of a system including a device supporting a waveform-specific transmit section, according to an aspect of the present disclosure. [Figure 9] FIG. 1 is a block diagram of a device supporting a waveform-specific transmitter, according to an aspect of the present disclosure. [Figure 10] FIG. 1 is a block diagram of a device supporting a waveform-specific transmitter, according to an aspect of the present disclosure. [Figure 11] FIG. 10 is a block diagram of a communications manager supporting waveform-specific transmitters according to an aspect of the present disclosure. [Figure 12] FIG. 1 is a diagram of a system including a device supporting a waveform-specific transmit section, according to an aspect of the present disclosure. [Figure 13] 1 is a flowchart illustrating a method for supporting a waveform-specific transmit section according to an aspect of the present disclosure. [Figure 14] 1 is a flowchart illustrating a method for supporting a waveform-specific transmit section according to an aspect of the present disclosure. [Figure 15] 1 is a flowchart illustrating a method for supporting a waveform-specific transmit section according to an aspect of the present disclosure. [Figure 16] 1 is a flowchart illustrating a method for supporting a waveform-specific transmit section according to an aspect of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0047] As demand for communication resources increases due to an increasing amount of wireless devices communicating on the available spectrum, increasingly higher frequencies may be used for communication. Also, just one reason is that as higher frequencies are used for communication, larger bandwidths may become available and desirable for use. For example, user equipment (UE) and base stations may communicate over relatively high frequency ranges (e.g., frequency ranges used in the FR2 radio frequency band or the FR4 radio frequency band, including the millimeter wave (mmW) frequency range), and communication over such relatively high frequency bands may enable the UE and base station to communicate over a relatively large bandwidth.

[0048] For larger bandwidth operation, there may be trade-offs between different waveform types (e.g., trade-offs between supported cell coverage area, supported throughput, implementation complexity, etc.) based on operating conditions or constraints associated with the UE or based on the deployment scenario of the UE. Thus, along with other parameters, which waveform types are desirable for use may vary across UEs or for the same UE over time (e.g., across different operating scenarios). However, scheduling complexities and interference issues related to the use of different waveform types by different UEs or by the same UE over time within the same wireless communications system may arise, which may result in increased system complexity or an increased likelihood of communication failure (e.g., as a result of more impactful interference).

[0049] In some implementations of the present disclosure, a base station (e.g., a network) may organize communications between a UE and the base station according to a waveform type. For example, the base station may configure a quantity of transmitters (which may refer to a set of time resources or frequency resources, or both), and each transmitter of the quantity may be associated with (e.g., configured for) a specified waveform type. Thus, the UE may receive a configuration of the quantity of transmitters from the base station, and the configuration may indicate a waveform type that the UE should use for communications across each of the quantity of transmitters (e.g., such that different waveform types may be configured for different transmitters). For example, according to the configuration, the UE and the base station may communicate via signaling based on a first waveform type within a first transmitter of the quantity of transmitters and via signaling based on a second waveform type within a second transmitter of the quantity of transmitters.

[0050] Particular implementations of the subject matter described in this disclosure may be implemented to achieve one or more of the following potential advantages. For example, the described techniques may be implemented to organize communications between various devices in a system according to waveform type, which may reduce scheduling complexity and interference issues related to the use of different waveform types by different UEs or by the same UE over time. For example, based on designating a waveform type to one or more pre-configured or pre-defined transmitters, a base station may experience lower complexity when scheduling communications of different waveform types (e.g., such scheduling may be achieved using activation or deactivation messages that may indicate which previously configured one or more transmitters are active for a UE at any given time, such that the UE may monitor and communicate according to the currently active one or more transmitters at any given time). Furthermore, because the base station may designate potentially interfering waveform types to transmitters separated in time, frequency, or both, such organization or pre-configuration of waveform-type designated transmitters may provide the base station with greater ability to efficiently manage interference between different waveform types, or in some cases, provide the base station with an efficient method for avoiding scenarios in which interference between different waveform types may occur. Also in some cases, the base station may further pre-configure one or more switches between different transmitters (and thus potentially between different waveform types) for the UE, and such pre-configured switches between pre-configured transmitters may be associated with even further reduced latency.

[0051] Aspects of the present disclosure are first described in the context of a wireless communication system. Additionally, aspects of the present disclosure are illustrated and described with reference to communication timelines and process flows. Aspects of the present disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts relating to waveform-specific transmitters.

[0052] 1 illustrates an example of a wireless communication system 100 supporting waveform-specific transmitters according to aspects of the present disclosure. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low-latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0053] The base stations 105 may be dispersed throughout a geographic area to form the wireless communication system 100 and may be devices of different forms or with different capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a geographic coverage area 110 over which the UEs 115 and the base station 105 may establish one or more communication links 125. The geographic coverage area 110 may be an example of a geographic area over which the base stations 105 and the UEs 115 may support communication of signals according to one or more radio access technologies.

[0054] The UEs 115 may be dispersed throughout the geographic coverage area 110 of the wireless communication system 100, and each UE 115 may be fixed or mobile, or both, at different times. The UEs 115 may be devices of different forms or with different capabilities. Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment), as shown in FIG. 1.

[0055] The base stations 105 may communicate with the core network 130, with each other, or both. For example, the base stations 105 may interface with the core network 130 through one or more backhaul links 120 (e.g., via an S1, N2, N3, or other interface). The base stations 105 may communicate with each other via the backhaul links 120 (e.g., via an X2, Xn, or other interface), either directly (e.g., directly between the base stations 105), or indirectly (e.g., via the core network 130), or both. In some examples, the backhaul links 120 may be or include one or more wireless links.

[0056] One or more of the base stations 105 described herein may include or be referred to as a base transceiver station, radio base station, access point, radio transceiver, Node B, eNode B (eNB), Next Generation Node B or GigaNode B (any of which may be referred to as a gNB), Home Node B, Home eNode B, or other suitable terminology by those skilled in the art.

[0057] The UE 115 may include or be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, and a “device” may also be referred to as a unit, a station, a terminal, or a client, among other things. The UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, the UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine-type communication (MTC) device, among other things, which may be implemented in various items such as an appliance, a vehicle, a meter, or the like.

[0058] The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may act as relays, as shown in FIG. 1, as well as base stations 105 and network equipment, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among others.

[0059] The UE 115 and the base station 105 may communicate wirelessly with each other via one or more communication links 125 on one or more carriers. The term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, the carrier used for the communication link 125 may include a portion (e.g., a bandwidth portion (BWP)) of a radio frequency spectrum band that is contiguous in the time domain and may operate according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry collection signaling (e.g., synchronization signals, system information), control signaling that coordinates operation on the carrier, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0060] In some examples (e.g., in carrier aggregation configurations), carriers may also have collection or control signaling to coordinate operation with other carriers. Carriers may be associated with frequency channels (e.g., Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Numbers (EARFCNs)) and may be arranged according to a channel raster for discovery by UE 115. Carriers may operate in a standalone mode, where initial collection and connection may be made by UE 115 over the carrier, or the carrier may operate in a non-standalone mode, where connection is anchored using a different carrier (e.g., of the same or different radio access technology).

[0061] The communication links 125 shown in the wireless communication system 100 may include uplink transmissions from the UE 115 to the base station 105 or downlink transmissions from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode) or may be configured to carry downlink and uplink communications (e.g., in TDD mode).

[0062] A carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of a certain amount of determined bandwidths for a carrier of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). The devices of the wireless communication system 100 (e.g., the base station 105, the UE 115, or both) may have a hardware configuration that supports communication over a particular carrier bandwidth or may be configurable to support communication over one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or a UE 115 that supports simultaneous communication over carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate over a portion (e.g., a sub-band, BWP) or all of the carrier bandwidth. In some cases, only one BWP may be active for a single UE 115 at any given time.

[0063] A signal waveform transmitted on a carrier may be composed of multiple subcarriers (e.g., using a multi-carrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM)). In a system employing MCM techniques, a resource element may consist of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The amount of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Thus, the more resource elements the UE 115 receives and the higher the order of the modulation scheme, the higher the data rate may be for the UE 115. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity for communications with the UE 115.

[0064] One or more numerologies for a carrier may be supported, where the numerology may include subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs with the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communication for the UE 115 may be limited to one or more active BWPs. In some aspects, a UE 115 may be configured with up to four downlink or uplink BWPs, each defined by a subcarrier spacing (SCS), a cyclic prefix (CP) length, a set of contiguous frequency domain resources, and a set of BWP-specific parameters. Thus, a BWP may be understood or considered as a portion of spectrum that encapsulates one or more parameters and is contiguous in time, while spanning only a portion of the system frequency band.

[0065] The time interval for the base station 105 or the UE 115 may be, for example, T s =1 / (Δf max N f ) seconds, where Δf max may represent the maximum supported subcarrier spacing, and N f may represent the maximum supported discrete Fourier transform (DFT) size. The communication resource time intervals may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0066] Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a certain amount of slots. Alternatively, each frame may include a variable amount of slots, and the amount of slots may depend on the subcarrier spacing. Each slot may include a certain amount of symbol periods (e.g., depending on the length of a cyclic prefix prepended to each symbol period). In some wireless communications systems 100, a slot may be further divided into multiple minislots, each containing one or more symbols. Excluding the cyclic prefix, each symbol period may include one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the frequency band of operation.

[0067] A subframe, slot, minislot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the amount of symbol periods within a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., within a burst of shortened TTIs (sTTIs)).

[0068] Physical channels may be multiplexed on carriers according to various techniques. Physical control channels and physical data channels may be multiplexed on downlink carriers using, for example, one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (core set)) for a physical control channel may be defined by an amount of symbol periods and may extend across the system bandwidth of the carrier or a subset of the system bandwidth. One or more control regions (e.g., core sets) may be configured for a set of UEs 115. For example, one or more of the UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates at one or more aggregation levels arranged in a cascaded manner. The aggregation level for a control channel candidate may refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 and a UE-specific search space set for transmitting control information to a specific UE 115.

[0069] Each base station 105 may provide communication coverage via one or more cells, e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof. The term “cell” may refer to a logical communication entity used for communication with the base station 105 (e.g., on a carrier) and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other) to distinguish neighboring cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion (e.g., a sector) of the geographic coverage area 110 in which the logical communication entity operates. Such a cell may range from a smaller area (e.g., a structure, a subset of a structure) to a larger area, depending on various factors such as the capabilities of the base station 105. For example, a cell may be or include, among other things, a building, a subset of a building, or an outside space between or overlapping with the geographic coverage area 110.

[0070] A macro cell generally covers a relatively large geographic area (e.g., a few kilometers in radius) and may allow unrestricted access by UEs 115 that subscribe to service with the network provider that supports the macro cell. Small cells may be associated with lower-power base stations 105 compared to macro cells, and the small cells may operate in the same or different (e.g., licensed, unlicensed) frequency bands as the macro cell. A small cell may provide unrestricted access to UEs 115 that subscribe to service with the network provider, or may provide restricted access to UEs 115 that have an association with the small cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with users in a home or office). A base station 105 may support one or more cells and may support communication on one or more cells using one or more component carriers.

[0071] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, Narrowband IoT (NB-IoT), enhanced Mobile Broadband (eMBB)) that may provide access to different types of devices.

[0072] In some examples, the base stations 105 may be mobile and therefore may provide communication coverage to moving geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, although the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include a heterogeneous network, for example, where different types of base stations 105 provide coverage to various geographic coverage areas 110 using the same or different radio access technologies.

[0073] The wireless communications system 100 may support synchronous or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and transmissions from different base stations 105 may, in some examples, not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operation.

[0074] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technologies that enable devices to communicate with each other or with the base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that incorporate sensors or meters to measure or capture information and relay that information to a central server or application program that utilizes such information or presents the information to a human who interacts with the application program. Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business billing.

[0075] Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communication (e.g., a mode that supports one-way communication via transmission or reception, but not simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power conservation techniques for UEs 115 include entering a power-saving deep sleep mode when not engaged in active communication, operating over a limited bandwidth (e.g., pursuant to narrowband communication), or a combination of these techniques. For example, some UEs 115 may be configured for operation using a narrowband protocol type associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of the carrier, or outside of the carrier.

[0076] The wireless communication system 100 may be configured to support ultra-reliable or low-latency communications, or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communications (URLLC) or mission-critical communications. The UE 115 may be designed to support ultra-reliable, low-latency, or critical functionality (e.g., mission-critical functionality). Ultra-reliable communications may include private or group communications and may be supported by one or more mission-critical services, such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functionality may include service prioritization, and the mission-critical services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency may be used interchangeably herein.

[0077] In some examples, the UE 115 may also be able to communicate directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) protocol or a D2D protocol). One or more UEs 115 utilizing D2D communication may be within the geographic coverage area 110 of the base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105 or, in some cases, may not be able to receive transmissions from the base station 105. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system in which each UE 115 transmits to every other UE 115 in the group. In some examples, the base station 105 facilitates scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without the involvement of the base station 105.

[0078] In some systems, the D2D communication link 135 may be an example of a communication channel between vehicles (e.g., UEs 115), such as a sidelink communication channel. In some examples, the vehicles may communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination thereof. The vehicles may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to the V2X system. In some examples, the vehicles in the V2X system may communicate with roadside infrastructure, such as roadside units, or with a network via one or more network nodes (e.g., base stations 105) using vehicle-to-network (V2N) communication, or both.

[0079] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an Evolved Packet Core (EPC) or 5G Core (5GC), which may include at least one control plane entity (e.g., a Mobility Management Entity (MME), an Access and Mobility Management Function (AMF)) that manages access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), a Packet Data Network (PDN) Gateway (P-GW), or a User Plane Function (UPF)) that routes packets or interconnects to external networks. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management, for UEs 115 served by base stations 105 associated with the core network 130. User IP packets may be forwarded through the user plane entity, which may provide IP address allocation and other functions. The user plane entities may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0080] Some of the network devices, such as the base stations 105, may include sub-components, such as an access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with the UE 115 through one or more other access network transmitting entities 145, which may be referred to as a radio head, a smart radio head, or a transmit / receive point (TRP). Each access network transmitting entity 145 may include one or more antenna panels. In some configurations, various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or integrated into a single network device (e.g., the base station 105).

[0081] The wireless communication system 100 may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). The 300 MHz to 3 GHz region is generally known as the ultra-high frequency (UHF) region or decimeter band because wavelengths range in length from approximately 1 decimeter to 1 meter. Although UHF waves may be blocked or redirected by buildings and environmental features, the waves can penetrate structures sufficiently for a macrocell to provide service to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using lower frequencies and longer waves in the shortwave (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0082] The wireless communication system 100 may also operate in the super high frequency (SHF) region, also known as the centimeter band, using the frequency band from 3 GHz to 30 GHz, or in the extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz), also known as the millimeter band. In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antennas on each device may be smaller and more closely spaced than UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, propagation of EHF transmissions may experience greater atmospheric attenuation and shorter distances than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of bands across these frequency regions may vary by country or regulatory body.

[0083] The wireless communication system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 may utilize licensed-assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band, such as the 5 GHz Industrial, Scientific, and Medical (ISM) band. When operating in an unlicensed radio frequency spectrum band, devices such as the base station 105 and the UE 115 may utilize carrier sensing for collision detection and avoidance. In some examples, operation in an unlicensed band may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA). Operation in an unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among others.

[0084] The base station 105 or the UE 115 may be equipped with multiple antennas that can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or the UE 115 may be located in one or more antenna arrays or antenna panels that can support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be collocated in an antenna assembly such as an antenna tower. In some examples, antennas or antenna arrays associated with the base station 105 may be located in various geographic locations. The base station 105 may have an antenna array with a certain number of rows and columns of antenna ports that the base station 105 can use to support beamforming of communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted through the antenna ports.

[0085] A base station 105 or a UE 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques are sometimes referred to as spatial multiplexing. Multiple signals may be transmitted by a transmitting device via different antennas or different combinations of antennas, for example. Similarly, multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits related to the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to the same receiving device, and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0086] Beamforming, sometimes referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting or receiving device (e.g., base station 105, UE 115) to shape or steer an antenna beam (e.g., transmit beam, receive beam) along a spatial path between the transmitting and receiving devices. Beamforming may be achieved by combining signals communicated through antenna elements of an antenna array such that some signals propagating at a particular orientation relative to the antenna array experience constructive interference and other signals experience destructive interference. Adjusting signals communicated through antenna elements may include the transmitting or receiving device applying an amplitude offset, a phase offset, or both to signals carried through antenna elements associated with the device. The adjustment associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., relative to the antenna array of the transmitting or receiving device, or relative to some other orientation).

[0087] The base station 105 or the UE 115 may use beam sweeping techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform a beamforming operation for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by the base station 105 multiple times in different directions. For example, the base station 105 may transmit signals according to different beamforming weight sets associated with different directions of transmission. The transmissions in different beam directions may be used (e.g., by a transmitting device such as the base station 105 or by a receiving device such as the UE 115) to identify a beam direction for later transmission or reception by the base station 105.

[0088] Some signals, such as data signals associated with a particular receiving device, may be transmitted by the base station 105 in a single beam direction (e.g., a direction associated with a receiving device such as the UE 115). In some examples, the beam direction associated with transmission along the single beam direction may be determined based on signals transmitted in one or more beam directions. For example, the UE 115 may receive one or more of the signals transmitted in different directions by the base station 105 and may report to the base station 105 an indication of the signal that the UE 115 received with the highest signal quality or, in some cases, an acceptable signal quality.

[0089] In some examples, transmission by a device (e.g., by the base station 105 or the UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from the base station 105 to the UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, where the feedback may correspond to a configured amount of beams across the system bandwidth or one or more subbands. The base station 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS)) that may or may not be precoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). These techniques are described with reference to signals transmitted by the base station 105 in one or more directions, although the UE 115 may employ similar techniques to transmit a signal multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by the UE 115) or to transmit a signal in a single direction (e.g., to transmit data to a receiving device).

[0090] A receiving device (e.g., UE 115) may attempt multiple receive configurations (e.g., directional listening) when receiving various signals, such as synchronization signals, reference signals, beam selection signals, or other control signals, from the base station 105. For example, the receiving device may attempt multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of the antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of the antenna array, any of which may be referred to as “listening” with different receive configurations or receive directions. In some examples, the receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal). The single receive configuration may be aligned to a beam direction determined based on listening with different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or in some cases, acceptable signal quality based on listening with multiple beam directions).

[0091] The wireless communication system 100 may be a packet-based network operating according to a layered protocol stack. In the user plane, communications at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. The Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate on logical channels. The Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels onto transport channels. The MAC layer may also use error detection, error correction, or both to support retransmissions at the MAC layer and improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer may establish, configure, and maintain an RRC connection between the UE 115 and the base station 105 or core network 130, which supports radio bearers for user plane data. In the physical layer, transport channels may be mapped to physical channels.

[0092] The UE 115 and the base station 105 may support retransmission of data to increase the likelihood of successful reception of the data. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data will be correctly received over the communication link 125. HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions). In some examples, a device may support same-slot HARQ feedback, in which the device may provide HARQ feedback within a particular slot for data received within a previous symbol in that slot. In other cases, the device may provide HARQ feedback in a subsequent slot or according to some other time interval.

[0093] In some cases, the UE 115 and the base station 105 may use additional (e.g., higher) frequency ranges to achieve higher throughput. For example, the UE 115 and the base station 105 may communicate over relatively high frequency ranges (e.g., frequency ranges used in the FR2 radio frequency band, or the FR4 radio frequency band, including the mmW frequency range), and communication over such relatively high frequency bands allows the UE 115 and the base station 105 to communicate over a relatively large bandwidth.

[0094] For larger bandwidth operation, there may be trade-offs between different waveform types (e.g., trade-offs between supported cell coverage area, supported throughput, implementation complexity, etc.) based on operating conditions or constraints associated with the UE 115 or based on the deployment scenario of the UE 115. Thus, which waveform type is desirable for use, along with other parameters, may vary across UEs 115 or for the same UE 115 over time (e.g., across different operating scenarios). Thus, in some implementations, the base station 105 (e.g., a network) may configure a quantity of transmitters for the UE 115, each designated for communication using a specified waveform type and associated with a (potentially unique) set of communication parameters.

[0095] For example, according to the configuration of the quantity of transmitters, the UE 115 and the base station 105 can communicate via signaling based on a first waveform type and using a first set of communication parameters via the first transmitter, and can communicate via signaling based on a second waveform type and using a second set of communication parameters via the second transmitter. In some implementations, the UE 115 and the base station 105 can support switching from communicating via the first transmitter to communicating via the second transmitter in response to a preconfigured switch, an activation signaling from the base station 105, or a deactivation signaling from the base station 105.

[0096] 2 illustrates an example of a wireless communication system 200 supporting waveform-specific transmitters in accordance with aspects of the present disclosure. The wireless communication system 200 may be implemented or may be implemented to realize aspects of the wireless communication system 100. For example, the wireless communication system 200 illustrates communication over a communication link 205 between a UE 115-a and a base station 105-a, which may be an example of a corresponding device described herein, including with reference to FIG. 1. In some examples, the UE 115-a and the base station 105-a may communicate over one or more transmitters, each associated with a specified waveform type.

[0097] In some examples, such as in examples where the wireless communication system 200 includes or is associated with an NR system, the UE 115-a and the base station 105-a may communicate over a relatively high frequency band. For example, the UE 115-a and the base station 105-a may communicate over an FR2 or FR4 radio frequency band. In such higher band operation (e.g., when employing a relatively high NR operating band), the UE 115-a and the base station 105-a may communicate over a relatively larger bandwidth compared to the bandwidth in a relatively lower frequency band. In some aspects, the UE 115-a and the base station 105-a may experience an increase in achievable throughput between the UE 115-a and the base station 105-a as a result of communicating over such a relatively larger bandwidth.

[0098] Additionally (and in such larger bandwidth operation), the UE 115-a and the base station 105-a may communicate using a number of different waveform types. For example, the UE 115-a and the base station 105-a may communicate using a single-carrier frequency-domain waveform such as a DFT-s-OFDM waveform, a single-carrier time-domain waveform such as a single-carrier quadrature amplitude modulation (SC-QAM) waveform, or a multi-carrier frequency-domain waveform such as an OFDM waveform. When the UE 115-a and the base station 105-a communicate using frequency-domain waveforms such as a single-carrier or multi-carrier frequency-domain waveform, the UE 115-a and the base station 105-a may map symbols onto subcarriers in the frequency domain using discrete Fourier transform (DFT) spreading and may map from subcarriers to symbols in the time domain using an inverse fast Fourier transform (IFFT). Alternatively, if the UE 115-a and the base station 105-a communicate using a time-domain waveform, such as a single-carrier time-domain waveform, the UE 115-a and the base station 105-a may forgo performing subcarrier mapping and simply use wideband time-domain transmission of symbols. In some examples, such as in examples where the UE 115-a and the base station 105-a communicate over a relatively high frequency band, there may be a trade-off between different waveform types based on operating conditions or constraints associated with the UE 115-a or the deployment scenario of the UE 115-a.

[0099] For example, communications using a single-carrier frequency-domain waveform, such as a DFT-s-OFDM waveform, may be associated with a relatively low peak-to-average power ratio (PAPR) compared to other waveform types (e.g., multi-carrier waveform types, such as OFDM waveforms) that may be associated with relatively larger coverage. For example, when the UE 115-a and the base station 105-a communicate using a single-carrier frequency-domain waveform, the UE 115-a and the base station 105-a may use a relatively high transmit power that may provide a relatively larger coverage area and be more nonlinear (while maintaining sufficiently high signal quality) compared to an example in which the UE 115-a and the base station 105-a communicate using a different waveform type (e.g., an OFDM waveform). Furthermore, the UE 115-a, the base station 105-a, or both may employ FDM or single-tap frequency-domain equalization, which may achieve relatively efficient bandwidth utilization in an example in which the UE 115-a and the base station 105-a communicate using a single-carrier frequency-domain waveform. For example, if the UE 115-a and the base station 105-a communicate using a single-carrier frequency domain waveform, the UE 115-a and the base station 105-a may refrain from using guard bands to separate simultaneous transmissions, which may increase the amount of bandwidth available for other communications within the wireless communication system 200.

[0100] In a further example, communications using a single-carrier time-domain waveform, such as SC-QAM, may be associated with a relatively low PAPR compared to other waveform types (e.g., OFDM waveforms, etc.) that may be associated with relatively larger coverage. For example, when the UE 115-a and the base station 105-a communicate using a single-carrier time-domain waveform, the base station 105-a may provide a relatively larger coverage area compared to an example in which the UE 115-a and the base station 105-a communicate using a different waveform type (e.g., OFDM waveforms, etc.). Furthermore, because the UE 115-a and the base station 105-a can forgo performing fast Fourier transform (FFT) and inverse FFT (IFFT) operations to support communications using the single-carrier time-domain waveform, implementations of the single-carrier time-domain waveform may be associated with relatively lower complexity compared to other waveform types.

[0101] In a further example, communications using multicarrier frequency-domain waveforms (e.g., OFDM waveforms) may be associated with a relatively high PAPR (and also relatively low coverage) compared to other waveform types (e.g., single-carrier waveform types). Accordingly, OFDM or other multicarrier waveforms may, in some examples, be less suitable for relatively high transmit power because deviations to nonlinearities may significantly affect signal quality. However, when the UE 115-a and the base station 105-a communicate using OFDM or other multicarrier waveforms, the UE 115-a and the base station 105-a may experience a relatively high SNR, relatively greater spectral efficiency, and relatively higher-order MIMO capabilities to achieve relatively high data rates compared to other waveform types (e.g., single-carrier waveform types, etc.). Furthermore, communications via OFDM or other multicarrier waveform types may be associated with single-tap frequency-domain equalization, easier or lower-complexity FDM capabilities, and relatively more efficient bandwidth utilization than some other waveform types (e.g., single-carrier time-domain waveform types, etc.).

[0102] Thus, different waveform types may be more or less suitable for different operating conditions or deployments of the UE 115-a. For example, one waveform type may be more or less suitable based on, among other things, the location of the UE 115-a relative to the base station 105-a, based on the SNR experienced by the UE 115-a or the base station 105-a, based on the power limitations or capabilities of the UE 115-a, or based on the MIMO capabilities of the UE 115-a. For example, if the UE 115-a is located relatively close to the base station 105-a or experiences operating conditions associated with relatively high channel quality (e.g., high SNR or multipath-rich channels), communication using OFDM or other multicarrier waveforms may be more suitable than communication via single-carrier waveforms because the UE 115-a and base station 105-a may use relatively low transmit power (so that the relatively high PAPR associated with OFDM waveforms is less impactful) while taking advantage of the relatively greater spectral efficiency and high data rate associated with multicarrier waveforms. Furthermore, in instances where the UE 115-a is capable of using relatively higher order MIMO techniques (and is potentially not power limited), OFDM or other multi-carrier waveform types may be more suitable waveform types as well.

[0103] Alternatively, if the UE 115-a is located relatively far from the base station 105-a (e.g., at a cell edge) or experiences operating conditions associated with relatively low channel quality (e.g., experiencing a relatively low SNR), then communications using a single-carrier waveform type (e.g., DFT-s-OFDM or SC-QAM) may be more suitable than communications via OFDM or other multi-carrier waveforms because the UE 115-a and base station 105-a may use relatively high transmit power (to take advantage of the relatively low PAPR associated with the single-carrier waveform). Further, in examples where the UE 115-a is power-limited or, in some cases, refrains from using MIMO communication techniques, a single-carrier waveform type may be a more suitable waveform type as well.

[0104] In some examples, such as in examples where the UE 115-a and the base station 105-a support higher band operation, the operating conditions or deployment scenario of the UE 115-a may change according to a relatively short timeline. Accordingly, the UE 115-a and the base station 105-a may support a mechanism for changing between waveforms. For example, as a result of changing operating conditions, the UE 115-a and the base station 105-a may support a mechanism for dynamically changing the waveform type that the UE 115-a and the base station 105-a use for communication. In some examples, the UE 115-a and the base station 105-a may dynamically select or change the waveform type according to one or more of a transmit power constraint, an FDM constraint, or a MIMO constraint.

[0105] As a result of such dynamic selection of waveform types according to operating conditions, different UEs 115 may use different waveform types at a given time. For example, a combination between a single-carrier (e.g., SC-QAM or DFT-s-OFDM) waveform and a multi-carrier (e.g., OFDM) waveform may be used. In such an example, a first UE 115 and base station 105-a using a single-carrier waveform may communicate via time-division multiplexing resource allocation that may not fit into a frequency-based framework in which a second UE 115 and base station 105-a could communicate if they used an OFDM waveform. Thus, the base station 105-a may experience additional complexity for scheduling single-carrier-based communications along with multi-carrier-based communications within the wireless communications system 200, and in some cases, such scheduling complexity may result in increased interference between such different waveform types.

[0106] In some cases, the base station 105-a may support a BWP concept to allow UEs 115 with multiple bandwidth capabilities to operate within the same network (e.g., within the wireless communication system 200). The base station 105-a and the UE 115-a may support dynamic BWP switching (using downlink control information (DCI)), and the base station 105-a may define a BWP switching gap (based on the UE capabilities) to provide sufficient time for the UE 115-a to adapt to a new set of parameters associated with the new BWP. Each BWP may be contiguous in time and may additionally or alternatively be associated with the same waveform type, and additionally or alternatively, only a single BWP may be active for the same UE 115 at any given time, each of which may limit the overall flexibility afforded to the wireless communication system 200 by using BWPs alone.

[0107] Additionally, in some examples (such as in higher band operation), different UEs 115 may have different support or capabilities for various communication parameters. For example, different UEs 115 may have different support or capabilities for operating bands using CP or guard intervals, waveform types, support for frequency-domain or time-domain equalization (e.g., some UEs 115 may have FFT support, while some other UEs 115 may feature a time-domain-only receiver), switching delays (e.g., between radio frequency chains, between operating bandwidths, between beams, etc.), or chip rates or sampling rates. To support such UEs 115 with diverse capabilities, the base station 105-a, in some implementations, may organize or pre-configure communications between one or more UEs 115 according to the support or capabilities each one or more UEs 115 has for various communication parameters.

[0108] In some examples, such organization or pre-configuration of communications between one or more UEs 115, including the UE 115-a and the base station 105-a, may result in faster switching (e.g., between operating bandwidths, between beams, between waveform types, etc.) at both the one or more UEs 115 and the base station 105-a. For example, the UE 115-a and the base station 105-a may perform pre-configured switching (e.g., between operating bandwidths, between beams, between waveform types, etc.) with lower latency or according to a shorter timeline than dynamic switching. Furthermore, such organization or pre-configuration of communications between one or more UEs 115 and the base station 105-a may enable a scheduler of the base station 105-a to allocate or schedule time domain resources (e.g., time domain resource allocation (TDRA), delays, etc.) with lower complexity, and in some examples, such allocation or scheduling of time domain resources may increase the ability of the base station 105-a to manage interference between different waveforms. Thus, according to some implementations of the present disclosure, the base station 105-a may organize or configure a framework to support multiple UEs 115 with different support and capabilities for various communication parameters, as well as different support or capabilities for waveform types.

[0109] In some examples, the base station 105-a may implement such a framework based on configuring a set of transmitters through which the base station 105-a may communicate with the UE 115-a (or one or more other UEs 115 in addition to the UE 115-a). The base station 105-a may define each transmitter in the set of transmitters to be a set of time domain resources (or a set of time domain resource sets), or a set of frequency domain resources (or a set of frequency domain resource sets), or a combination thereof. In examples in which the base station 105-a defines a transmitter as a set of time domain resources or time domain resource sets, the time domain resources or time resource sets may be contiguous or distributed in time. Similarly, in examples in which the base station 105-a defines a transmitter as a set of frequency domain resources or frequency domain resource sets, the frequency domain resources or frequency domain resource sets may be contiguous or distributed in frequency.

[0110] The base station 105-a may configure each transmitter of the set of transmitters so that each transmitter has, or in some cases is associated with, a (unique) set of parameters. For example, the base station 105-a may configure each transmitter to have, or be associated with, a waveform type, CP or guard interval length, SCS, chip rate, bandwidth, or switching time or duration, among other examples of communication parameters that may be dedicated to or defined for a set of time or frequency (or both) resources. As shown in FIG. 2, the set of transmitters may include a first transmitter 210 (sometimes referred to as TP1), a second transmitter 215 (sometimes referred to as TP2), and a third transmitter 220 (sometimes referred to as TP3).

[0111] In some examples, the base station 105-a may configure the first transmitter 210 for communications using an SC-QAM waveform and may configure the second transmitter 215 and the third transmitter 220 for communications using an OFDM waveform. Further, the base station 105-a may additionally configure each of the first transmitter 210, the second transmitter 215, and the third transmitter 220 with settings for each of various communication parameters. Thus, the UE 115-a and the base station 105-a may communicate via each of one or more of the set of transmitters using the waveform type specified for that transmitter and in accordance with the set of communication parameters associated with that transmitter.

[0112] In some implementations, in addition to configuring a set of transmitters for the UE 115-a, the base station 105-a may configure the UE 115-a with an initial transmitter that the UE 115-a may use to communicate with the base station 105-a. In some examples, the base station 105-a may configure the initial transmitter in system information, such as system information block (SIB) 1, and the UE 115-a may similarly receive the configuration of the initial transmitter as a result of receiving the system information from the base station 105-a. In some examples, the UE 115-a and the base station 105-a may communicate via the initial transmitter until another transmitter is configured or activated for the UE 115-a.

[0113] For example, the base station 105-a may transmit a transmitter set configuration to the UE 115-a upon establishing a connection, such as an RRC connection, with the UE 115-a, and prior to establishing the connection, the UE 115-a and the base station 105-a may communicate via an initial transmitter. Additionally or alternatively, the UE 115-a may receive system information including an indication of the initial transmitter after establishing a connection with the base station 105-a and may communicate with the base station 105-a via the initial transmitter until the UE 115-a receives signaling from the base station 105-a activating one or more of the configured transmitter sets.

[0114] For example, the set of transmitters that the base station 105-a configures in the UE 115-a may include one or more transmitters, and the base station 105-a may indicate to the UE 115-a which of the one or more transmitters are active (e.g., usable by the UE 115-a). In some examples, for example, the UE 115-a may receive an activation message from the base station 105-a that activates at least a subset of the set of transmitters configured in the UE 115-a. In an example in which the set of transmitters includes the first transmitter 210, the second transmitter 215, and the third transmitter 220, for example, the UE 115-a may receive an activation message that indicates to the UE 115-a to activate one or more of the first transmitter 210, the second transmitter 215, or the third transmitter 220. The UE 115-a may communicate with the base station 105-a via one or more of the activated transmitters in response. In some aspects, the UE 115-a may receive an activation message from the base station 105-a via DCI, a MAC control element (MAC-CE), or RRC signaling.

[0115] In some examples, the UE 115-a may additionally receive from the base station 105-a an indication of a default transmitter. Such a default transmitter may refer to a transmitter of a set of configured transmitters that the UE 115-a and the base station 105-a may use for communication if other transmitters (e.g., remaining) of the set of configured transmitters (e.g., one of the first transmitter 210, the second transmitter 215, or the third transmitter 220) are deactivated (or, as the case may be, not active for use by the UE 115-a). In some examples, the UE 115-a may receive an indication of multiple default transmitters such that the UE 115-a and the base station 105-a may communicate via any one or more of the multiple default transmitters if other transmitters (e.g., remaining) of the set of configured transmitters are deactivated (or, as the case may be, not active for use by the UE 115-a). The UE 115-a may receive the indication of the default transmitter as part of the signaling conveying the configuration of the set of transmitters or via separate signaling. In some examples, the default transmitter (or one of the multiple default transmitters) may be the same as the initial transmitter. In some other examples, the default transmitter (or any of the multiple default transmitters) may be different from the initial transmitter.

[0116] In some implementations, active transmitters (e.g., transmitters for which the UE 115-a receives an instruction to activate via an activation message) may remain in the active state indefinitely or for a limited duration. In some examples, for example, the UE 115-a may maintain one or more active transmitters in the active state (and, in response, may use those one or more activated transmitters for communications with the base station 105-a) until the UE 115-a receives a deactivation message from the base station 105-a that explicitly deactivates one or more of the active transmitters. In some aspects, the UE 115-a may receive the deactivation message from the base station 105-a via DCI, MAC-CE, or RRC signaling.

[0117] Alternatively, in some other examples, the UE 115-a may receive a timer (or an indication of the timer's duration) associated with one or more of the active transmitters from the base station 105-a, and the UE 115-a may deactivate one or more of the active transmitters associated with the timer upon expiration of the timer. In other words, the UE 115-a may maintain the active transmitters in an active state for the timer's duration. Thus, the UE 115-a (and the base station 105-a) may implicitly (e.g., without additional signaling) deactivate the active transmitter upon expiration of the timer (e.g., after the timer expires). In both examples (both explicit and implicit deactivation), the UE 115-a may fall back to using a default transmitter (or one of multiple default transmitters) or another transmitter that is still active.

[0118] Furthermore, although shown as including three transmitters, the set of transmitters that base station 105-a may configure for UE 115-a (or for one or more UEs in addition to UE 115-a) may include any amount of transmitters without going beyond the scope of this disclosure. Additional details regarding such sets of configured transmitters configured for multiple UEs are described herein, including with reference to FIG. 3.

[0119] 3 illustrates an example of a communication timeline 300 supporting waveform-specific transmitters according to aspects of the disclosure. The communication timeline 300 may be implemented or can be implemented to realize aspects of the wireless communication system 100 or the wireless communication system 200. For example, the communication timeline 300 may illustrate communications between a base station 105 and multiple UEs 115 (which may be examples of corresponding devices described herein, including with reference to FIGS. 1 and 2) via one or more transmitters. In some examples, the base station 105 may configure a set of transmitters through which the multiple UEs 115 may communicate with the base station 105 to orchestrate or pre-configure waveform-specific communications over different sets of time or frequency resources.

[0120] For example, the base station 105 may configure a set of transmitters including a first transmitter 305 (sometimes referred to as TP1), a second transmitter 310 (sometimes referred to as TP2), a third transmitter 315 (sometimes referred to as TP3), a fourth transmitter 320 (sometimes referred to as TP4), a fifth transmitter 325 (sometimes referred to as TP5), and a sixth transmitter 330 (sometimes referred to as TP6) and may transmit an indication of the set (or at least a subset) of the configured transmitters to the UE 115 (or multiple UEs 115). As described in more detail with reference to FIG. 2, each transmitter in the set of transmitters may be associated with a (unique) set of communication parameters, and each transmitter in the set of transmitters may be associated with a designated or specified waveform type (such that communications via that transmitter use the designated or specified waveform type).

[0121] For example, the first transmitter 305 may be associated with an SC-QAM waveform, the second transmitter 310 may be associated with an OFDM waveform, the third transmitter 315 may be associated with an OFDM waveform, the fourth transmitter 320 may be associated with a DFT-s-OFDM waveform, the fifth transmitter 325 may be associated with an SC-QAM waveform, and the sixth transmitter 330 may be associated with an OFDM waveform. Further, as shown in FIG. 3, the base station 105 may allocate different sets of transmitters to different UEs 115. For example, the base station 105 may configure a first set of transmitters including the first transmitter 305 and the fifth transmitter 325 for the first UE 115 (e.g., UE1), a second set of transmitters including the third transmitter 315 and the sixth transmitter 330 for the second UE 115 (e.g., UE2), and a third set of transmitters including the second transmitter 310 and the fourth transmitter 320 for the third UE 115 (e.g., UE3).

[0122] In some implementations, the set of transmitters that the base station 105 configures for the UE 115 may include an uplink-specific set of transmitters, a downlink-specific set of transmitters, a set of transmitters that are for both uplink and downlink communications, or any combination thereof. In some examples, for example, the set of transmitters may include a first subset of uplink-specific transmitters associated with a set of uplink-specific communication parameters and a second subset of downlink-specific transmitters associated with a set of downlink-specific communication parameters. In other words, the base station 105 may configure the set of transmitters for the UE 115 such that the UE 115 and the base station may use any one of the first subset of uplink-specific transmitters for uplink communications and any one of the second subset of downlink-specific transmitters for downlink communications. Such uplink- or downlink-specific communication parameters may include any communication parameters that are dedicated or exclusive to either uplink or downlink communications or that may have different settings or values ​​for uplink and downlink communications.

[0123] Additionally or alternatively, the set of transmitters may include transmitters associated with sets of communication parameters for both uplink and downlink communications. Thus, the UE 115 and the base station 105 may communicate via uplink signaling or downlink signaling, or both, via such transmitters associated with communication parameters for both uplink and downlink communications. Such communication parameters may include any communication parameters that are common to or shared between uplink and downlink communications. In other words, the uplink transmitter and the downlink transmitter may be the same transmitter and may have the same communication parameters.

[0124] As shown in FIG. 3, a transmitter of a configured set of transmitters may include, or in some cases refer to, a set of time domain resources (or time domain resource sets) or a set of frequency resources (or frequency domain resource sets), or both, and the time domain resources or frequency domain resources of a transmitter may be contiguous or distributed in time. For example, the first transmitter 305 may cover a set of frequency resources and may include resources that are contiguous in time. In a further example, the fifth transmitter 325 may include resources that are distributed in time. In other words, the fifth transmitter 325 may occupy a set of frequency domain resources and multiple time domain resource sets (e.g., multiple sets of symbols or slots). Other transmitters of the set of transmitters shown in FIG. 3 may similarly occupy frequency domain resources that are either contiguous or distributed in frequency, or time domain resources that are contiguous or distributed in time.

[0125] In such examples where the UE 115 and the base station 105 communicate via transmissions that have time gaps or are possibly discontinuous in time, the UE 115 and the base station 105 may define any communication timeline such that the communication timeline is transparent to or accounts for the time gaps. In some implementations, for example, the UE 115 and the base station 105 may communicate according to a communication timeline that is transparent to one or more time gaps associated with the transmissions. In such implementations, the UE 115 and the base station 105 may define any procedure, parameter, or counter (e.g., timer, scheduling delay, HARQ timeline, etc.) such that the procedure, parameter, or counter ignores the time gaps (e.g., treats one or more time gaps as not present, does not continue counting during the time gap, does not reset upon the occurrence of the time gap). For example, the counter or timer may run while the first UE 115 and the base station 105 communicate via a first (time domain) occasion of the fifth transmitter 325, may pause between the first occasion of the fifth transmitter 325 and a second occasion of the fifth transmitter 325, and may resume running while the first UE 115 and the base station 105 communicate via the second occasion of the fifth transmitter 325.

[0126] Alternatively, in some other implementations, the UE 115 and the base station 105 may communicate according to a communication timeline that takes into account one or more time gaps in the transmissions. In such implementations, the UE 115 and the base station 105 may define a procedure, parameter, or counter (e.g., a timer, a scheduling delay, an HARQ timeline, etc.) such that any procedure, parameter, or counter takes into account one or more time gaps in the transmissions. For example, a counter or timer may run while the first UE 115 and the base station 105 communicate via a first occasion of the fifth transmission 325, may continue to run between the first occasion of the fifth transmission 325 and a second occasion of the fifth transmission 325, and may continue to run while the UE 115 and the base station 105 communicate via the second occasion of the fifth transmission 325.

[0127] Additionally, the UE 115 may feature one or more rules or procedures for communicating outside of the active transmitters. For example, the UE 115 may receive a grant for a set of resources outside of the one or more active transmitters and, in some implementations, may communicate with the base station 105 over the set of resources outside of the one or more active transmitters (e.g., according to the rules or procedures). Alternatively, in some other implementations, the UE 115 can refrain from communicating with the base station 105 over the set of resources outside of the one or more active transmitters (e.g., according to the rules and procedures).

[0128] Such rules or procedures may define whether the UE 115 is enabled to communicate (e.g., transmit or receive) outside of one or more transmitters that are active for the UE 115, and such rules or procedures may be configured normally (e.g., pre-configured in the UE 115) or may be signaled from the base station 105 to the UE 115. For example, the UE 115 may determine whether the UE 115 is enabled to communicate via resources outside of one or more active transmitters based on pre-configured or normally configured rules or based on an indication or configuration that the UE 115 may receive from the base station 105. In some implementations, the base station 105 may determine whether to send a grant for a set of resources to the UE 115 according to a rule or procedure that indicates whether the UE 115 is enabled to communicate via resources that are outside of one or more transmitters that are active for the UE 115. In some examples, for example, the base station 105 may refrain from sending a grant for a set of resources to the UE 115 if the UE 115 is prohibited, or possibly not permitted, to communicate via resources outside of one or more transmitters active for the UE 115.

[0129] In some aspects, the base station 105 may configure one or more guard bands between some transmitters of the set of transmitters. Thus, some transmitters, such as the fifth transmitter 325 and the sixth transmitter 330, may be separated by a frequency range (e.g., to mitigate interference between the signaling sent via the transmitters). For example, the base station 105 may configure a guard band between the fifth transmitter 325 and the sixth transmitter 330 (which may overlap in time) because SC-QAM-based signaling could potentially interfere with OFDM-based signaling. For similar reasons, the base station 105 may refrain from configuring a guard band between the second transmitter 310 and the third transmitter 315 (which also overlap in time) because both the second transmitter 310 and the third transmitter 315 may feature OFDM-based signaling that may be multiplexed to avoid interference.

[0130] Additionally or alternatively, the base station 105 may configure one or more switching gaps between some of the transmitters of the set of transmitters. Thus, some of the transmitters may be separated by a duration to allow for switching between the transmitters. In some examples, the switching gaps that the base station 105 may configure between the transmitters may provide sufficient time for the UE 115 and the base station 105 to make adjustments associated with switching from communicating via one transmitter to communicating via a different transmitter.

[0131] For example, in an example in which the first transmitter 305 and the fifth transmitter 325 are active (or become active) for the first UE 115, the first UE 115 and the base station 105 may communicate for a first time period via the first transmitter 305 in accordance with a first set of communication parameters associated with the first transmitter 305 via signaling based on the SC-QAM waveform, and may communicate for a second time period via the fifth transmitter 325 in accordance with a second set of communication parameters associated with the fifth transmitter 325 via signaling based on the SC-QAM waveform. Thus, the first UE 115 and the base station 105 may make one or more adjustments during a switching gap between the first transmitter 305 and the fifth transmitter 325 to support switching from communicating in accordance with the first set of communication parameters to communicating in accordance with the second set of communication parameters.

[0132] In a further example, in an example in which the second transmitter 310 and the fourth transmitter 320 are active (or become active) for the third UE 115, the third UE 115 and the base station 105 may communicate for a first time period via the second transmitter 310 in accordance with a first set of communication parameters associated with the second transmitter 310 via signaling based on an OFDM waveform, and may communicate for a second time period via the fourth transmitter 320 in accordance with a second set of communication parameters associated with the fourth transmitter 320 via signaling based on a DFT-s-OFDM waveform. Thus, the third UE 115 and the base station 105 may make one or more adjustments during a switching gap between the second transmitter 310 and the fourth transmitter 320 to support switching from communicating via the OFDM waveform to communicating via the DFT-s-OFDM waveform, and from communicating in accordance with the first set of communication parameters to communicating in accordance with the second set of communication parameters.

[0133] In some examples, the UE 115 may receive activation signaling from the base station 105 that simultaneously activates multiple transmitters for the UE 115, or the UE 115 may possibly have more than one active transmitter simultaneously (e.g., such that the UE 115 may have multiple active transmitters in parallel or simultaneously). In such aspects, the first transmitter 305 and the fifth transmitter 325 may both be active transmitters for the first UE 115, and the first UE 115 can switch from communicating with the base station 105 via the first transmitter 305 to communicating with the base station 105 via the fifth transmitter 325 during a switching gap by having both the first transmitter 305 and the fifth transmitter 325 as active transmitters. In some other examples, the first UE 115 may receive a deactivation message for the first transmitter 305 and an activation message for the fifth transmitter 325 and can switch from communicating with the base station 105 via the first transmitter 305 to communicating with the base station 105 via the fifth transmitter 325 during the switching gap in accordance with the activation and deactivation signaling.

[0134] In a further example, the second transmitter 310 and the fourth transmitter 320 may both be active transmissions for the third UE 115, and the third UE 115, by having both the second transmitter 310 and the fourth transmitter 320 as active transmitters, can switch from communicating with the base station 105 via the second transmitter 310 to communicating with the base station 105 via the fourth transmitter 320 during a switching gap. In some other examples, the third UE 115 may receive a deactivation message for the second transmitter 310 and an activation message for the fourth transmitter 320 and can switch from communicating with the base station 105 via the second transmitter 310 to communicating with the base station 105 via the fourth transmitter 320 during a switching gap in accordance with the activation and deactivation signaling.

[0135] Thus, the base station 105 may effectively encapsulate different waveform types within various transmitters, support low-latency switching between transmitters for a single UE 115, and, as a result of such organization or configuration of the various transmitters, support efficient allocation of different transmitters to different UEs 115 to efficiently avoid interference between the different waveform types. For example, based on activating and deactivating one or more transmitters for the UE 115 within the set of transmitters configured for that UE 115, the base station 105 may avoid allocating resources to communications via one waveform type that is likely to suffer from (or cause interference to) other communications as a result of the waveform type, set of communication parameters, or resource allocation associated with the other communications.

[0136] 4 illustrates an example of a process flow 400 supporting waveform-specific transmitters according to aspects of the disclosure. Process flow 400 may be implemented or can be implemented to realize aspects of wireless communication system 100, wireless communication system 200, or communication timeline 300. For example, process flow 400 illustrates communication between UE 115-b and base station 105-b, which may be examples of corresponding devices described herein, including with reference to FIGS. 1 through 3. In some examples, base station 105-b may configure a set of transmitters through which multiple UEs 115-b may communicate with base station 105-b to orchestrate or pre-configure waveform-specific communications over different sets of time or frequency resources.

[0137] In the following description of process flow 400, operations may be performed (e.g., reported or provided) in an order different from that shown, or operations performed by UE 115-b and base station 105-b may be performed in a different order or at different times. For example, certain operations may also be omitted from process flow 400, or other operations may be added to process flow 400. Furthermore, while some operations or signaling may be shown as occurring at different times for purposes of discussion, these operations may actually occur simultaneously.

[0138] At 405, the UE 115-b may receive an SIB from the base station 105-b that includes the configuration of the initial transmitter. In some examples, the UE 115-b and the base station 105-b may communicate using the initial transmitter until the UE 115-b is configured with or receives activation signaling associated with other transmitters. In some aspects, the initial transmitter may include different time or frequency resources than other transmitters that may be configured at the UE 115-b and may be associated with a designated or specified waveform type.

[0139] At 410, the UE 115-b may send a capabilities message to the base station 105-b indicating a set of waveform types that the UE 115-b is capable of using. In some examples, the UE 115-b may receive a configuration of the set of transmitters based on or according to the set of waveform types that the UE 115-b is capable of using.

[0140] At 415, the UE 115-b may receive from the base station 105-b an indication of sets of transmitters, each including a different set of time resources, a different set of frequency resources, or both. In some examples, the indication of the sets of transmitters associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. In some aspects, the set of transmitters that the base station 105-b configures for the UE 115-b may be based on or according to the set of waveform types that the UE 115-b is capable of using.

[0141] At 420, the UE 115-b may receive an indication of a default transmitter of the set of transmitters. In some examples, the default transmitter may be a first transmitter associated with a first waveform type. In some implementations, the UE 115-b and the base station 105-b may treat the default transmitter as a fallback transmitter such that the UE 115-b and the base station 105-b may communicate via the default transmitter if other transmitters of the set of transmitters configured in the UE 115-b are inactive.

[0142] At 425, the UE 115-b and the base station 105-b may communicate during a first time period via a first transmitter via signaling based on a first waveform type. For example, the UE 115-b and the base station 105-b may communicate using a first transmitter (e.g., a default transmitter) prior to activation of other transmitters in the set of transmitters configured in the UE 115-b.

[0143] At 430, the UE 115-b may receive from the base station 105-b an activation message for one or more transmitters of the set of transmitters. In some examples, the one or more transmitters associated with the activation message may include a second transmitter associated with a second waveform type.

[0144] At 435, the UE 115-b may, in some implementations, receive an indication of the duration of a timer associated with one or more transmitters activated by the activation message. In such implementations in which the UE 115-b receives the indication of the timer duration, the UE 115-b may determine that the one or more transmitters may be active for the timer duration and may be inactive after the timer expires.

[0145] At 440, the UE 115-b and the base station 105-b may communicate during a second time period after the first time period via the second transmitter via signaling based on the second waveform type. In some examples, the UE 115-b and the base station 105-b can switch from communicating via the first transmitter to communicating via the second transmitter based on or as a result of receiving an activation message for one or more transmitters, including the second transmitter.

[0146] At 445, the UE 115-b may, in some implementations, receive a deactivation message for one or more transmitters of the set of transmitters. In such implementations, the UE 115-b may deactivate the one or more transmitters upon receipt of the deactivation message or after some delay measured from receipt of the deactivation message.

[0147] At 450, the UE 115-b may, in some implementations, detect that the timer (whose duration was signaled at 435) expires. In such implementations, the UE 115-b may deactivate one or more transmitters upon detection of the expiration of the timer.

[0148] At 455, the UE 115-b can switch from communicating with the base station 105-b via the second transmitter associated with the second waveform type to communicating with the base station 105-b via the first transmitter associated with the first waveform type or the third transmitter associated with the third waveform type. In some examples, the UE 115-b and the base station 105-b can switch from the second transmitter as a result of receiving a deactivation message at 445 or detecting that a timer has expired at 450. In some examples, the UE 115-b and the base station 105-b can switch to the first transmitter (e.g., a default transmitter) if no other transmitter remains active, or can switch to the third transmitter if the third transmitter is another transmitter in a set of transmitters configured for the UE 115-b that remains active.

[0149] 5 shows a block diagram 500 of a device 505 supporting a waveform-specific transmitter according to an embodiment of the present disclosure. The device 505 may be an example of an embodiment of a UE 115 as described herein. The device 505 may include a receiver 510, a transmitter 515, and a communications manager 520. The device 505 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0150] The receiver 510 may provide a means for receiving information such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to waveform-specific transmissions). The information may be passed to other components of the device 505. The receiver 510 may utilize a single antenna or a set of multiple antennas.

[0151] The transmitter 515 may provide a means for transmitting signals generated by other components of the device 505. For example, the transmitter 515 may transmit information such as packets associated with various information channels (e.g., a control channel, a data channel, an information channel related to a waveform-specific transmission portion), user data, control information, or any combination thereof. In some examples, the transmitter 515 may be collocated with the receiver 510 within a transceiver module. The transmitter 515 may utilize a single antenna or a set of multiple antennas.

[0152] The communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be examples of means for performing various aspects of the waveform-specific transmit portion described herein. For example, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

[0153] In some examples, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry). The hardware may include a 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 configured as, or in some cases supporting, means for performing the functions described in this disclosure. In some examples, the processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by the processor executing instructions stored in the memory).

[0154] Additionally or alternatively, in some examples, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communications management software or firmware). When implemented in code executed by a processor, the functions of the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a central processing unit (CPU), an ASIC, an FPGA, or any combination of these or other programmable logic devices (e.g., configured as, or in some cases supporting, a means for performing the functions described in this disclosure).

[0155] In some examples, the communications manager 520 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or in some cases in cooperation with, the receiver 510, the transmitter 515, or both. For example, the communications manager 520 may receive information from the receiver 510 and transmit information to the transmitter 515, or may be integrated with the receiver 510, the transmitter 515, or both to receive information, transmit information, or perform various other operations described herein.

[0156] Communications manager 520 may support wireless communications at a UE in accordance with examples described herein. For example, communications manager 520 may be configured as, or may in some cases support, a means for receiving from a base station an indication of a set of transmitters, each including a respective set of time or frequency resources, where at least one of the time or frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. Communications manager 520 may be configured as, or may in some cases support, a means for communicating with the base station during a first time period via the first transmitter via signaling based on the first waveform type. Communications manager 520 may be configured as, or may in some cases support, a means for communicating with the base station during a second time period after the first time period via signaling based on the second waveform type.

[0157] By including or configuring a communications manager 520 according to the examples described herein, the device 505 (e.g., a processor controlling or, in some cases, coupled to the receiver 510, the transmitter 515, the communications manager 520, or a combination thereof) may support techniques for reduced processing, reduced power consumption, and more efficient utilization of communications resources.

[0158] 6 shows a block diagram 600 of a device 605 supporting a waveform-specific transmit section according to an embodiment of the disclosure. The device 605 may be an example of an embodiment of a device 505 or a UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communications manager 620. The device 605 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

[0159] The receiver 610 may provide a means for receiving information such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to waveform-specific transmissions). The information may be passed to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.

[0160] The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may transmit information such as packets associated with various information channels (e.g., a control channel, a data channel, an information channel related to a waveform-specific transmission portion), user data, control information, or any combination thereof. In some examples, the transmitter 615 may be collocated with the receiver 610 within a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.

[0161] The device 605 or its various components may be an example of a means for performing various aspects of the waveform-specific transmitter described herein. For example, the communications manager 620 may include a transmitter configuration component 625, a transmitter communication component 630, or any combination thereof. The communications manager 620 may be an example of an aspect of the communications manager 520 described herein. In some examples, the communications manager 620 or its various components may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or in some cases in cooperation with, the receiver 610, the transmitter 615, or both. For example, the communications manager 620 may receive information from the receiver 610 and transmit information to the transmitter 615, or may be integrated with the receiver 610, the transmitter 615, or both to receive information, transmit information, or perform various other operations described herein.

[0162] The communications manager 620 may support wireless communications in a UE according to examples disclosed herein. The transmitter configuration component 625 may be configured as, or may in some cases support, a means for receiving from a base station an indication of a set of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. The transmitter communication component 630 may be configured as, or may in some cases support, a means for communicating with the base station during a first time period via the first transmitter via signaling based on the first waveform type. The transmitter communication component 630 may be configured as, or may in some cases support, a means for communicating with the base station during a second time period after the first time period via the second transmitter via signaling based on the second waveform type.

[0163] FIG. 7 shows a block diagram 700 of a communications manager 720 supporting a waveform-specific transmitter according to aspects of the present disclosure. Communications manager 720 may be an example of aspects of communications manager 520, communications manager 620, or both described herein. Communications manager 720, or various components thereof, may be an example of a means for implementing various aspects of a waveform-specific transmitter described herein. For example, communications manager 720 may include a transmitter configuration component 725, a transmitter communication component 730, a system information component 735, an activation component 740, a communication timeline component 745, a resource authorization component 750, a switching gap component 755, a deactivation component 760, or any combination thereof. Each of these components may be in direct or indirect communication with each other (e.g., via one or more buses).

[0164] Communications manager 720 may support wireless communications in a UE in accordance with examples disclosed herein. Transmitter configuration component 725 may be configured as, or may in some cases support, a means for receiving from a base station an indication of a set of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. Transmitter communication component 730 may be configured as, or may in some cases support, a means for communicating with a base station during a first time period via a first transmitter via signaling based on the first waveform type. In some examples, transmitter communication component 730 may be configured as, or may in some cases support, a means for communicating with a base station during a second time period after the first time period via a second transmitter via signaling based on the second waveform type.

[0165] In some examples, the system information component 735 may be configured as, or may in some cases support, a means for receiving an SIB including an initial transmitter configuration different from the first transmitter and the second transmitter, the SIB associating the initial transmitter with an initial waveform type, which may be the first waveform type, the second waveform type, or a third waveform type. In some examples, the transmitter communication component 730 may be configured as, or may in some cases support, a means for communicating with the base station via signaling based on the initial waveform type prior to the first time period.

[0166] In some examples, the transmitter configuration component 725 may be configured as, or in some cases may support, a means for receiving an indication of a default transmitter of a set of transmitters, the default transmitter including a first transmitter, and communicating with a base station during a first time period via the first transmitter based on the indication of the default transmitter.

[0167] In some examples, activation component 740 may be configured as, or in some cases may support, a means for receiving an activation message from a base station for one or more transmitters of a set of transmitters that includes the second transmitter, where the activation message is based on and / or supports communicating via the second transmitter associated with the second waveform type.

[0168] In some examples, deactivation component 760 may be configured as, or may in some cases support, a means for receiving a deactivation message for one or more transmitters of the set of transmitters from a base station. In some examples, transmitter communication component 730 may be configured as, or may in some cases support, a means for switching from communicating with the base station via a second transmitter associated with a second waveform type to communicating with the base station via a first transmitter associated with a first waveform type or a third transmitter associated with a third waveform type based on the deactivation message.

[0169] In some examples, the deactivation component 760 may be configured as, or may in some cases support, a means for receiving from the base station an indication of a duration of a timer associated with one or more transmitters of the set of transmitters, where one or more transmitters are each deactivated for the UE upon expiration of the timer. In some examples, the transmitter communication component 730 may be configured as, or may in some cases support, a means for switching from communicating with the base station via a second transmitter associated with the second waveform type to communicating with the base station via a first transmitter associated with the first waveform type or a third transmitter associated with the third waveform type based on expiration of the timer.

[0170] In some examples, the first transmitter and the second transmitter are active in parallel for the UE.

[0171] In some examples, the set of transmitters may include a set of uplink-specific transmitters associated with a set of uplink-specific communication parameters, hi some examples, the set of transmitters may include a set of downlink-specific transmitters associated with a set of downlink-specific communication parameters.

[0172] In some examples, each transmitter in the set of transmitters is for both uplink and downlink communications, hi some examples, the instructions associate each transmitter in the set of transmitters with a respective set of communication parameters that are common to uplink and downlink communications.

[0173] In some examples, at least one of the first transmitter and the second transmitter are non-contiguous in time. In such examples, to support communicating with a base station via the first transmitter or the second transmitter, the communication timeline component 745 may be configured as, or in some cases may support, a means for communicating according to a communication timeline that is transparent to one or more time gaps associated with at least one of the first transmitter and the second transmitter that are non-contiguous in time.

[0174] In some examples, at least one of the first transmitter and the second transmitter are non-contiguous in time. In such examples, to support communicating with a base station via the first transmitter or the second transmitter, the communication timeline component 745 may be configured as, or in some cases may support, a means for communicating according to a communication timeline that accounts for one or more time gaps associated with at least one of the first transmitter and the second transmitter that are non-contiguous in time.

[0175] In some examples, the resource granting component 750 may be configured as, or may in some cases support, a means for receiving a grant from a base station for a transmission resource outside of one or more active transmitters of the set of transmitters. In some examples, the resource granting component 750 may be configured as, or may in some cases support, a means for communicating with the base station via a transmission resource that is outside of the one or more active transmitters based on the grant.

[0176] In some examples, the resource granting component 750 may be configured as, or may in some cases support, a means for receiving a grant from a base station for a transmission resource outside of one or more active transmitters of the set of transmitters. In some examples, the resource granting component 750 may be configured as, or may in some cases support, a means for refraining from communicating with the base station over a transmission resource outside of the one or more active transmitters based on the grant.

[0177] In some examples, switching gap component 755 may be configured as, or may in some cases support, a means for receiving from a base station a configuration of one or more switching gaps or one or more guard bands, each between a respective pair of transmitters in a set of transmitters. In some examples, switching gap component 755 may be configured as, or may in some cases support, a means for switching from communicating with the base station via a first transmitter associated with a first waveform type to communicating with the base station via a second transmitter associated with a second waveform type during a switching gap of one or more switching gaps.

[0178] In some examples, the transmitter configuration component 725 may be configured as, or in some cases may support, a means for transmitting a capability message to the base station indicating a set of waveform types that the UE is capable of using, where the indication of the transmitter set is based on the capability message.

[0179] In some examples, each set of time and frequency resources for a transmitter of a set of transmitters may be non-contiguous in time, may be non-contiguous in frequency, or may be non-contiguous in both time and frequency.

[0180] In some examples, the first waveform type includes a first waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or a multi-carrier waveform, and in some examples, the second waveform type includes a second waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or a multi-carrier waveform.

[0181] FIG. 8 shows a diagram of a system 800 including a device 805 supporting a waveform-specific transmitter according to an aspect of the disclosure. The device 805 may be an example of or may include components of a device 505, a device 605, or a UE 115 as described herein. The device 805 may communicate wirelessly with one or more base stations 105, a UE 115, or any combination thereof. The device 805 may include components for two-way voice and data communication, including components for transmitting and receiving communications, such as a communications manager 820, an input / output (I / O) controller 810, a transceiver 815, an antenna 825, a memory 830, code 835, and a processor 840. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 845).

[0182] The I / O controller 810 may manage input and output signals for the device 805. The I / O controller 810 may also manage peripheral devices not integrated into the device 805. In some cases, the I / O controller 810 may represent a physical connection or port to an external peripheral device. In some cases, the I / O controller 810 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or another known operating system. Additionally or alternatively, the I / O controller 810 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 810 may be implemented as part of a processor, such as the processor 840. In some cases, a user may interact with the device 805 through the I / O controller 810 or through hardware components controlled by the I / O controller 810.

[0183] In some cases, the device 805 may include a single antenna 825. However, in some other cases, the device 805 may have two or more antennas 825 that may be capable of simultaneously transmitting or receiving multiple wireless transmissions. The transceiver 815 may communicate bidirectionally via one or more antennas 825, wired links, or wireless links, as described herein. For example, the transceiver 815 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 815 may also include a modem for modulating packets and providing the modulated packets to the one or more antennas 825 for transmission, and for demodulating packets received from the one or more antennas 825. The transceiver 815, or the transceiver 815 and the one or more antennas 825, may be an example of the transmitter 515, the transmitter 615, the receiver 510, the receiver 610, or any combination thereof or components thereof, as described herein.

[0184] The memory 830 may include random access memory (RAM) and read-only memory (ROM). The memory 830 may store computer-readable computer-executable code 835, which includes instructions that, when executed by the processor 840, cause the device 805 to perform various functions described herein. The code 835 may be stored on a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, the code 835 may not be directly executable by the processor 840, but (e.g., when compiled and executed) may cause a computer to perform the functions described herein. In some cases, the memory 830 may include a basic I / O system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0185] The processor 840 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 840 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 840. The processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks supporting a waveform-specific transmit portion). For example, the device 805 or a component of the device 805 may include the processor 840 and the memory 830 coupled to the processor 840, where the processor 840 and the memory 830 are configured to perform various functions described herein.

[0186] Communications manager 820 may support wireless communications in a UE in accordance with examples disclosed herein. For example, communications manager 820 may be configured as, or may in some cases support, a means for receiving from a base station an indication of a set of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. Communications manager 820 may be configured as, or may in some cases support, a means for communicating with the base station during a first time period via the first transmitter via signaling based on the first waveform type. Communications manager 820 may be configured as, or may in some cases support, a means for communicating with the base station during a second time period after the first time period via signaling based on the second waveform type.

[0187] By including or configuring a communications manager 820 in accordance with examples described herein, the device 805 may support techniques for improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient use of communications resources, improved coordination between devices, longer battery life, and improved utilization of processing power.

[0188] In some examples, communications manager 820 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or in some cases in cooperation with, transceiver 815, one or more antennas 825, or any combination thereof. Although communications manager 820 is shown as a separate component, in some examples, one or more functions described with reference to communications manager 820 may be supported or performed by processor 840, memory 830, code 835, or any combination thereof. For example, code 835 may include instructions executable by processor 840 to cause device 805 to perform various aspects of the waveform-specific transmit portion described herein, or processor 840 and memory 830 may be configured to perform or support such operations.

[0189] 9 shows a block diagram 900 of a device 905 supporting a waveform-specific transmitter according to an embodiment of the present disclosure. The device 905 may be an example of an embodiment of a base station 105 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communications manager 920. The device 905 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0190] The receiver 910 may provide a means for receiving information such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to waveform-specific transmissions). The information may be passed to other components of the device 905. The receiver 910 may utilize a single antenna or a set of multiple antennas.

[0191] The transmitter 915 may provide a means for transmitting signals generated by other components of the device 905. For example, the transmitter 915 may transmit information such as packets associated with various information channels (e.g., a control channel, a data channel, an information channel related to a waveform-specific transmission portion), user data, control information, or any combination thereof. In some examples, the transmitter 915 may be collocated with the receiver 910 within a transceiver module. The transmitter 915 may utilize a single antenna or a set of multiple antennas.

[0192] The communications manager 920, the receiver 910, the transmitter 915, or various combinations thereof or components thereof may be examples of means for performing various aspects of the waveform-specific transmit portion described herein. For example, the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

[0193] In some examples, the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry). The hardware may include a processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as a means for performing, or in some cases supporting, the functions described in this disclosure. In some examples, the processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by the processor executing instructions stored in the memory).

[0194] Additionally or alternatively, in some examples, the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communications management software or firmware). When implemented in code executed by a processor, the functions of the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof or other programmable logic device (e.g., configured as or possibly supporting a means for performing the functions described in this disclosure).

[0195] In some examples, the communications manager 920 may be configured to perform various operations (e.g., receive, monitor, transmit) using, or in some cases in cooperation with, the receiver 910, the transmitter 915, or both. For example, the communications manager 920 may receive information from the receiver 910 and transmit information to the transmitter 915, or may be integrated with the receiver 910, the transmitter 915, or both to receive information, transmit information, or perform various other operations described herein.

[0196] Communications manager 920 may support wireless communications at a base station in accordance with examples disclosed herein. For example, communications manager 920 may be configured as, or may in some cases support, a means for transmitting to a UE an indication of a set of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. Communications manager 920 may be configured as, or may in some cases support, a means for communicating with the UE during a first time period via the first transmitter via signaling based on the first waveform type. Communications manager 920 may be configured as, or may in some cases support, a means for communicating with the UE during a second time period after the first time period via the second transmitter via signaling based on the second waveform type.

[0197] By including or configuring a communications manager 920 according to the examples described herein, the device 905 (e.g., a processor controlling or, in some cases, coupled to the receiver 910, the transmitter 915, the communications manager 920, or a combination thereof) may support techniques for reducing power consumption and more efficient utilization of communications resources.

[0198] 10 shows a block diagram 1000 of a device 1005 supporting a waveform-specific transmit section according to an embodiment of the present disclosure. The device 1005 may be an example of an embodiment of a device 905 or a base station 105 as described herein. The device 1005 may include a receiver 1010, a transmitter 1015, and a communications manager 1020. The device 1005 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0199] The receiver 1010 may provide a means for receiving information such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to waveform-specific transmissions). The information may be passed to other components of the device 1005. The receiver 1010 may utilize a single antenna or a set of multiple antennas.

[0200] The transmitter 1015 may provide a means for transmitting signals generated by other components of the device 1005. For example, the transmitter 1015 may transmit information such as packets associated with various information channels (e.g., a control channel, a data channel, an information channel related to a waveform-specific transmission portion), user data, control information, or any combination thereof. In some examples, the transmitter 1015 may be co-located with the receiver 1010 within a transceiver module. The transmitter 1015 may utilize a single antenna or a set of multiple antennas.

[0201] The device 1005 or its various components may be examples of means for performing various aspects of the waveform-specific transmitter described herein. For example, the communications manager 1020 may include a transmitter configuration component 1025, a transmitter communication component 1030, or any combination thereof. The communications manager 1020 may be an example of an aspect of the communications manager 920 as described herein. In some examples, the communications manager 1020 or its various components may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or in some cases in cooperation with, the receiver 1010, the transmitter 1015, or both. For example, the communications manager 1020 may receive information from the receiver 1010 and transmit information to the transmitter 1015, or may be integrated with the receiver 1010, the transmitter 1015, or both to receive information, transmit information, or perform various other operations as described herein.

[0202] The communications manager 1020 may support wireless communications at a base station according to examples disclosed herein. The transmitter configuration component 1025 may be configured as, or may in some cases support, a means for transmitting an indication of a set of transmitters to a UE, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. The transmitter communication component 1030 may be configured as, or may in some cases support, a means for communicating with the UE during a first time period via the first transmitter via signaling based on the first waveform type. The transmitter communication component 1030 may be configured as, or may in some cases support, a means for communicating with the UE during a second time period after the first time period via the second transmitter via signaling based on the second waveform type.

[0203] FIG. 11 shows a block diagram 1100 of a communications manager 1120 supporting a waveform-specific transmitter according to aspects of the present disclosure. The communications manager 1120 may be an example of aspects of the communications manager 920, the communications manager 1020, or both described herein. The communications manager 1120 or various components thereof may be an example of a means for implementing various aspects of the waveform-specific transmitter described herein. For example, the communications manager 1120 may include a transmitter configuration component 1125, a transmitter communication component 1130, a system information component 1135, an activation component 1140, a communication timeline component 1145, a resource authorization component 1150, a switching gap component 1155, a deactivation component 1160, or any combination thereof. Each of these components may be in direct or indirect communication with each other (e.g., via one or more buses).

[0204] The communications manager 1120 may support wireless communications at a base station according to examples disclosed herein. The transmitter configuration component 1125 may be configured as, or may in some cases support, a means for transmitting an indication of a set of transmitters to a UE, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. The transmitter communication component 1130 may be configured as, or may in some cases support, a means for communicating with the UE during a first time period via the first transmitter via signaling based on the first waveform type. In some examples, the transmitter communication component 1130 may be configured as, or in some cases may support, a means for communicating with the UE during a second time period after the first time period via a second transmitter via signaling based on a second waveform type.

[0205] In some examples, the system information component 1135 may be configured with, or may in some cases support, a means for transmitting an SIB including a configuration of an initial transmitter that is different from the first transmitter and the second transmitter, the SIB associating the initial transmitter with an initial waveform type, which may be the first waveform type, the second waveform type, or a third waveform type. In some examples, the transmitter communication component 1130 may be configured with, or may in some cases support, a means for communicating with the UE via signaling based on the initial waveform type prior to the first time period regarding the initial transmitter.

[0206] In some examples, the transmitter configuration component 1125 may be configured as or, in some cases, may support a means for transmitting an indication of a default transmitter of a set of transmitters, the default transmitter including a first transmitter, and communicating with the UE during a first time period via the first transmitter based on the indication of the default transmitter.

[0207] In some examples, the activation component 1140 may be configured as, or in some cases may support, a means for transmitting to the UE an activation message for one or more transmitters of a set of transmitters that includes the second transmitter, where the activation message is based on, or means for transmitting via, the second transmitter associated with the second waveform type.

[0208] In some examples, the deactivation component 1160 may be configured as, or may in some cases support, a means for transmitting a deactivation message for one or more transmitters of the set of transmitters to the UE. In some examples, the transmitter communication component 1130 may be configured as, or may in some cases support, a means for switching from communicating with the UE via a second transmitter associated with the second waveform type to communicating with the UE via a first transmitter associated with the first waveform type or to communicating with the UE via a third transmitter associated with the third waveform type based on transmitting a deactivation message.

[0209] In some examples, the deactivation component 1160 may be configured as, or may in some cases support, a means for transmitting to the UE an indication of the duration of a timer associated with one or more transmitters, where the one or more transmitters are each deactivated for the UE upon expiration of the timer. In some examples, the transmitter communication component 1130 may be configured as, or may in some cases support, a means for switching from communicating with the UE via a second transmitter associated with the second waveform type to communicating with the UE via a first transmitter associated with the first waveform type or a third transmitter associated with the third waveform type based on expiration of the timer.

[0210] In some examples, the first transmitter and the second transmitter are active in parallel for the UE.

[0211] In some examples, the set of transmitters may include a set of uplink-specific transmitters associated with a set of uplink-specific communication parameters, hi some examples, the set of transmitters may include a set of downlink-specific transmitters associated with a set of downlink-specific communication parameters.

[0212] In some examples, each transmitter in the set of transmitters is for both uplink and downlink communications, hi some examples, the instructions associate each transmitter in the set of transmitters with a respective set of communication parameters that are common to uplink and downlink communications.

[0213] In some examples, at least one of the first transmitter and the second transmitter are non-contiguous in time. In such examples, to support communicating with the UE via the first transmitter or the second transmitter, the communication timeline component 1145 may be configured as, or in some cases may support, a means for communicating according to a communication timeline that is transparent to one or more time gaps associated with at least one of the first transmitter and the second transmitter that are non-contiguous in time.

[0214] In some examples, at least one of the first transmitter and the second transmitter are non-contiguous in time. In such examples, to support communicating with the UE via the first transmitter or the second transmitter, the communication timeline component 1145 may be configured as, or in some cases may support, a means for communicating according to a communication timeline that accounts for one or more time gaps associated with at least one of the first transmitter and the second transmitter that are non-contiguous in time.

[0215] In some examples, the resource granting component 1150 may be configured as, or may in some cases support, a means for transmitting a grant for a transmission resource outside of one or more active transmitters of the set of transmitters to the UE. In some examples, the resource granting component 1150 may be configured as, or may in some cases support, a means for communicating with the UE via a transmission resource that is outside of the one or more active transmitters based on the grant.

[0216] In some examples, the switching gap component 1155 may be configured as, or may in some cases support, a means for transmitting to the UE a configuration of one or more switching gaps or one or more guard bands, each between a respective pair of transmitters in the set of transmitters. In some examples, the switching gap component 1155 may be configured as, or may in some cases support, a means for switching from communicating with the UE via a first transmitter associated with a first waveform type to communicating with the UE via a second transmitter associated with a second waveform type during a switching gap of one or more switching gaps.

[0217] In some examples, the transmitter configuration component 1125 may be configured as, or in some cases may support, a means for receiving a capability message from the UE indicating a set of waveform types that the UE is capable of using, where the indication of the transmitter set is based on the capability message.

[0218] In some examples, each set of time and frequency resources for a transmitter of a set of transmitters may be non-contiguous in time, may be non-contiguous in frequency, or may be non-contiguous in both time and frequency.

[0219] In some examples, the first waveform type includes a first waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or a multi-carrier waveform, and in some examples, the second waveform type includes a second waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or a multi-carrier waveform.

[0220] 12 shows a diagram of a system 1200 including a device 1205 supporting a waveform-specific transmit section according to an aspect of the disclosure. The device 1205 may be an example of or include components of a device 905, a device 1005, or a base station 105 as described herein. The device 1205 may communicate wirelessly with one or more base stations 105, UEs 115, or any combination thereof. The device 1205 may include components for two-way voice and data communication, including components for transmitting and receiving communications, such as a communications manager 1220, a network communications manager 1210, a transceiver 1215, an antenna 1225, a memory 1230, code 1235, a processor 1240, and an inter-station communications manager 1245. These components may be in electronic communication or, in some cases, may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1250).

[0221] The network communications manager 1210 may manage communications with the core network 130 (e.g., via one or more wired backhaul links). For example, the network communications manager 1210 may manage the forwarding of data communications for client devices, such as one or more UEs 115.

[0222] In some cases, the device 1205 may include a single antenna 1225. However, in some other cases, the device 1205 may have two or more antennas 1225 that may be capable of simultaneously transmitting or receiving multiple wireless transmissions. The transceiver 1215 may communicate bidirectionally via one or more antennas 1225, a wired link, or a wireless link, as described herein. For example, the transceiver 1215 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1215 may also include a modem for modulating packets and providing the modulated packets to the one or more antennas 1225 for transmission, and for demodulating packets received from the one or more antennas 1225. The transceiver 1215, or the transceiver 1215 and the one or more antennas 1225, may be an example of the transmitter 915, the transmitter 1015, the receiver 910, the receiver 1010, or any combination or component thereof, as described herein.

[0223] Memory 1230 may include RAM and ROM. Memory 1230 may store computer-readable, computer-executable code 1235 including instructions that, when executed by processor 1240, cause device 1205 to perform various functions described herein. Code 1235 may be stored on a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, code 1235 may not be directly executable by processor 1240, but (e.g., when compiled and executed) may cause a computer to perform functions described herein. In some cases, memory 1230 may include a BIOS, which may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0224] The processor 1240 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 1240 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 1240. The processor 1240 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1230) to cause the device 1205 to perform various functions (e.g., functions or tasks supporting a waveform-specific transmit portion). For example, the device 1205 or a component of the device 1205 may include the processor 1240 and the memory 1230 coupled to the processor 1240, where the processor 1240 and the memory 1230 are configured to perform various functions described herein.

[0225] The inter-station communications manager 1245 may manage communications with other base stations 105 and may include a controller or scheduler for cooperating with the other base stations 105 to control communications with the UE 115. For example, the inter-station communications manager 1245 may coordinate scheduling for transmissions to the UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, the inter-station communications manager 1245 may provide an X2 interface within the LTE / LTE-A wireless communications network technology for communications between the base stations 105.

[0226] Communications manager 1220 may support wireless communications at a base station in accordance with examples disclosed herein. For example, communications manager 1220 may be configured as, or may in some cases support, a means for transmitting to a UE an indication of a set of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. Communications manager 1220 may be configured as, or may in some cases support, a means for communicating with a UE during a first time period via a first transmitter via signaling based on the first waveform type. Communications manager 1220 may be configured as, or may in some cases support, a means for communicating with a UE during a second time period after the first time period via a second transmitter via signaling based on the second waveform type.

[0227] By including or configuring a communications manager 1220 in accordance with examples described herein, the device 1205 may support techniques for improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient use of communications resources, improved coordination between devices, longer battery life, and improved utilization of processing power.

[0228] In some examples, communications manager 1220 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or in some cases in cooperation with, transceiver 1215, one or more antennas 1225, or any combination thereof. Although communications manager 1220 is shown as a separate component, in some examples, one or more functions described with reference to communications manager 1220 may be supported or performed by processor 1240, memory 1230, code 1235, or any combination thereof. For example, code 1235 may include instructions executable by processor 1240 to cause device 1205 to perform various aspects of a waveform-specific transmit portion as described herein, or processor 1240 and memory 1230 may be configured to perform or support such operations.

[0229] FIG. 13 shows a flowchart illustrating a method 1300 for supporting a waveform-specific transmit portion according to an aspect of the present disclosure. The operations of method 1300 may be implemented by a UE or components thereof as described herein. For example, the operations of method 1300 may be performed by a UE 115 as described with reference to FIGS. 1-8. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0230] At 1305, the method may include receiving from a base station an indication of sets of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. The operations of 1305 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed by a transmitter configuration component 725 as described with reference to FIG. 7.

[0231] At 1310, the method may include communicating with a base station during a first time period via a first transmitter via signaling based on a first waveform type. The operations of 1310 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by a transmitter communication component 730 as described with reference to FIG. 7.

[0232] At 1315, the method may include communicating with the base station during a second time period after the first time period via the second transmitter via signaling based on the second waveform type. The operations of 1315 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed by transmitter communication component 730 as described with reference to FIG. 7.

[0233] FIG. 14 shows a flowchart illustrating a method 1400 for supporting a waveform-specific transmit portion according to an aspect of the present disclosure. The operations of method 1400 may be implemented by a UE or components thereof as described herein. For example, the operations of method 1400 may be performed by a UE 115 as described with reference to FIGS. 1-8. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0234] At 1405, the method may include receiving from a base station an indication of sets of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective sets of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. The operations of 1405 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1405 may be performed by a transmitter configuration component 725 as described with reference to FIG. 7.

[0235] At 1410, the method may include communicating with a base station during a first time period via a first transmitter via signaling based on a first waveform type. The operations of 1410 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed by a transmitter communication component 730 as described with reference to FIG. 7.

[0236] At 1415, the method may include receiving, from the base station, an activation message for one or more transmitters of the set of transmitters, including the second transmitter. The operations of 1415 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed by activation component 740 as described with reference to FIG. 7.

[0237] At 1420, the method may include communicating with the base station during a second time period after the first time period via signaling based on a second waveform type via a second transmitter based at least in part on the activation message. The operations of 1420 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1420 may be performed by a transmitter communication component 730 as described with reference to FIG. 7.

[0238] FIG. 15 shows a flowchart illustrating a method 1500 for supporting a waveform-specific transmit portion according to an aspect of the present disclosure. The operations of method 1500 may be implemented by a base station or components thereof as described herein. For example, the operations of method 1500 may be performed by a base station 105 as described with reference to FIGS. 1-4 and 9-12. In some examples, the base station may execute a set of instructions to control functional elements of the base station to perform the described functions. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the described functions.

[0239] At 1505, the method may include transmitting to the UE an indication of sets of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective sets of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. The operations of 1505 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed by transmitter configuration component 1125 as described with reference to FIG. 11.

[0240] At 1510, the method may include communicating with the UE during a first time period via a first transmitter via signaling based on a first waveform type. The operations of 1510 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed by a transmitter communication component 1130 as described with reference to FIG. 11.

[0241] At 1515, the method may include communicating with the UE during a second time period after the first time period via the second transmitter via signaling based on the second waveform type. The operations of 1515 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed by transmitter communication component 1130 as described with reference to FIG. 11.

[0242] FIG. 16 shows a flowchart illustrating a method 1600 for supporting a waveform-specific transmit portion according to an aspect of the present disclosure. The operations of method 1600 may be implemented by a base station or components thereof as described herein. For example, the operations of method 1600 may be performed by a base station 105 as described with reference to FIGS. 1-4 and 9-12. In some examples, the base station may execute a set of instructions to control functional elements of the base station to perform the described functions. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the described functions.

[0243] At 1605, the method may include transmitting to the UE an indication of sets of transmitters, each including a respective set of time and frequency resources, where at least one of the time and frequency resources included within the respective sets of time and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type. The operations of 1605 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed by transmitter configuration component 1125 as described with reference to FIG. 11.

[0244] At 1610, the method may include communicating with the UE during a first time period via a first transmitter via signaling based on a first waveform type. The operations of 1610 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed by a transmitter communication component 1130 as described with reference to FIG. 11.

[0245] At 1615, the method may include transmitting an activation message to the UE for one or more transmitters of the set of transmitters, including the second transmitter. The operations of 1615 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed by activation component 1140 as described with reference to FIG. 11.

[0246] At 1620, the method may include communicating with the UE during a second time period after the first time period via signaling based at least in part on the activation message via a second transmitter based on a second waveform type. The operations of 1620 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1620 may be performed by a transmitter communication component 1130 as described with reference to FIG. 11.

[0247] The following provides a summary of aspects of the present disclosure.

[0248] Aspect 1: A method for wireless communication in a UE, the method including: receiving from a base station an indication of sets of transmitters, each including a respective set of time resources and frequency resources, wherein at least one of the time resources and frequency resources included within the respective set of time resources and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; communicating with the base station during a first time period via signaling based at least in part on the first waveform type via the first transmitter; and communicating with the base station during a second time period after the first time period via signaling based at least in part on the second waveform type via the second transmitter.

[0249] Aspect 2: The method of aspect 1, further comprising: receiving an SIB including a configuration of an initial transmitter that is different from the first transmitter and the second transmitter, the SIB associating the initial transmitter with an initial waveform type including a first waveform type, a second waveform type, or a third waveform type; and communicating with a base station via signaling based at least in part on the initial waveform type prior to the first time period via the initial transmitter.

[0250] Aspect 3: The method of any of aspects 1 or 2, further comprising receiving an indication of a default transmitter of the set of transmitters, the default transmitter including a first transmitter, and wherein communicating with the base station during the first time period via the first transmitter is based at least in part on the indication of the default transmitter.

[0251] Aspect 4: The method of any of aspects 1 to 3, further comprising receiving, from the base station, an activation message for one or more transmitters of the set of transmitters including the second transmitter, wherein communicating via the second transmitter associated with the second waveform type is based at least in part on the activation message.

[0252] Aspect 5: The method of aspect 4, further including: receiving a deactivation message from a base station for one or more transmitters of the set of transmitters; and switching from communicating with the base station via a second transmitter associated with the second waveform type to communicating with the base station via a first transmitter associated with the first waveform type or a third transmitter associated with the third waveform type based at least in part on the deactivation message.

[0253] Aspect 6: The method of aspect 4 or 5, further including: receiving from the base station an indication of a duration of a timer associated with one or more transmitters of the set of transmitters, the one or more transmitters each being deactivated for the UE upon expiration of the timer; and switching from communicating with the base station via the second transmitter associated with the second waveform type to communicating with the base station via the first transmitter associated with the first waveform type or communicating with the base station via the third transmitter associated with the third waveform type based at least in part on the expiration of the timer.

[0254] Example 7: The method of any of Examples 1 to 6, wherein the first transmitter and the second transmitter are concurrently active for the UE.

[0255] Aspect 8: The method of any of aspects 1 to 7, wherein the set of transmitters includes a set of uplink-specific transmitters associated with a first set of uplink-specific communication parameters and a set of downlink-specific transmitters associated with a set of downlink-specific communication parameters.

[0256] Aspect 9: The method of any of aspects 1 to 7, wherein each transmitter in the set of transmitters is for both uplink and downlink communications, and the instructions associate each transmitter in the set of transmitters with a respective set of communication parameters common to the uplink and downlink communications.

[0257] Aspect 10: The method of any of aspects 1 to 9, wherein at least one of the first transmitter and the second transmitter are non-contiguous in time, and wherein communicating with the base station via the first transmitter or the second transmitter includes communicating according to a communication timeline that is transparent to one or more time gaps associated with at least one of the first transmitter and the second transmitter that are non-contiguous in time.

[0258] Aspect 11: The method of any of aspects 1 to 9, wherein at least one of the first transmitter and the second transmitter are non-contiguous in time, and wherein communicating with the base station via the first transmitter or the second transmitter includes communicating according to a communication timeline that takes into account one or more time gaps associated with at least one of the first transmitter and the second transmitter that are non-contiguous in time.

[0259] Aspect 12: The method of any of aspects 1 to 11, further including: receiving a grant from the base station for a transmission resource outside of one or more active transmitters of the set of transmitters; and communicating with the base station over the transmission resource outside of the one or more active transmitters based at least in part on the grant.

[0260] Aspect 13: The method of any of aspects 1 to 11, further including: receiving a grant from the base station for a transmission resource outside of one or more active transmitters of the set of transmitters; and refraining from communicating with the base station over the transmission resource outside of the one or more active transmitters based at least in part on the grant.

[0261] Aspect 14: The method of any of aspects 1 to 13, further including: receiving from the base station a configuration of one or more switching gaps or one or more guard bands, each between a respective pair of transmitters in the set of transmitters; and during a switching gap of the one or more switching gaps, switching from communicating with the base station via a first transmitter associated with a first waveform type to communicating with the base station via a second transmitter associated with a second waveform type.

[0262] Aspect 15: The method of any of aspects 1 to 14, further comprising: transmitting a capability message to a base station indicating a set of waveform types that the UE can use, the indication of the set of transmitters being based at least in part on the capability message.

[0263] Aspect 16: The method of any of aspects 1 to 15, wherein each set of time resources and frequency resources for a transmitter of a set of transmitters is non-contiguous in time, non-contiguous in frequency, or non-contiguous in both time and frequency.

[0264] Aspect 17: The method of any of aspects 1 to 16, wherein the first waveform type includes a first waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or an OFDM waveform, and the second waveform type includes a second waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or an OFDM waveform.

[0265] Aspect 18: A method for wireless communication in a base station, the method comprising: transmitting to a UE an indication of a set of transmitters, each including a respective set of time resources and frequency resources, wherein at least one of the time resources and frequency resources included within the respective set of time resources and frequency resources varies for each transmitter of the set of transmitters, and the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; communicating with the UE during a first time period via the first transmitter via signaling based at least in part on the first waveform type; and communicating with the UE during a second time period after the first time period via signaling based at least in part on the second waveform type.

[0266] Aspect 19: The method of aspect 18, further comprising: transmitting an SIB including a configuration of an initial transmitter that is different from the first transmitter and the second transmitter, the SIB associating the initial transmitter with an initial waveform type including the first waveform type, the second waveform type, or the third waveform type; and communicating with the UE via signaling based at least in part on the initial waveform type prior to the first time period via the initial transmitter.

[0267] Aspect 20: The method of aspect 18 or 19, further comprising: transmitting an indication of a default transmitter of the set of transmitters, the default transmitter including a first transmitter, and wherein communicating with the UE during the first time period via the first transmitter is based at least in part on the indication of the default transmitter.

[0268] Aspect 21: The method of any of aspects 18 to 20, further comprising: transmitting to the UE an activation message for one or more transmitters of a set of transmitters including the second transmitter, wherein communicating via the second transmitter associated with the second waveform type is based at least in part on the activation message.

[0269] Aspect 22: The method of aspect 21, further including: sending a deactivation message to the UE for one or more transmitters of the set of transmitters; and switching from communicating with the UE via a second transmitter associated with the second waveform type to communicating with the UE via a first transmitter associated with the first waveform type or a third transmitter associated with the third waveform type based at least in part on sending the deactivation message.

[0270] Aspect 23: The method of aspect 21 or 22, further including: transmitting to the UE an indication of a duration of a timer associated with one or more transmitters, each of the one or more transmitters being deactivated for the UE upon expiration of the timer; and switching from communicating with the UE via a second transmitter associated with the second waveform type to communicating with the UE via a first transmitter associated with the first waveform type or a third transmitter associated with the third waveform type based at least in part on the expiration of the timer.

[0271] Example 24: The method of any of Examples 18 to 23, wherein the first transmitter and the second transmitter are concurrently active for the UE.

[0272] Aspect 25: The method of any of aspects 18 to 24, wherein the set of transmitters includes a set of uplink-specific transmitters associated with a first set of uplink-specific communication parameters and a set of downlink-specific transmitters associated with a set of downlink-specific communication parameters.

[0273] Aspect 26: The method of any of aspects 18 to 24, wherein each transmitter in the set of transmitters is for both uplink and downlink communications, and the instructions associate each transmitter in the set of transmitters with a respective set of communication parameters shared for the uplink and downlink communications.

[0274] Aspect 27: The method of any of aspects 18 to 26, wherein at least one of the first transmitter and the second transmitter are discontinuous in time, and wherein communicating with the UE via the first transmitter or the second transmitter includes communicating according to a communication timeline that is transparent to one or more time gaps associated with at least one of the first transmitter and the second transmitter that are discontinuous in time.

[0275] Aspect 28: The method of any of aspects 18 to 26, wherein at least one of the first transmitter and the second transmitter are non-contiguous in time, and wherein communicating with the UE via the first transmitter or the second transmitter includes communicating according to a communication timeline that takes into account one or more time gaps associated with at least one of the first transmitter and the second transmitter that are non-contiguous in time.

[0276] Aspect 29: The method of any of aspects 18 to 28, further comprising: transmitting a grant to the UE for a transmission resource outside of one or more active transmitters of the set of transmitters; and communicating with the UE via the transmission resource outside of the one or more active transmitters based at least in part on the grant.

[0277] Aspect 30: The method of any of aspects 18 to 29, further comprising: transmitting to the UE a configuration of one or more switching gaps or one or more guard bands, each between a respective pair of transmitters in the set of transmitters; and during a switching gap of the one or more switching gaps, switching from communicating with the UE via a first transmitter associated with a first waveform type to communicating with the UE via a second transmitter associated with a second waveform type.

[0278] Aspect 31: The method of any of aspects 18 to 30, further comprising receiving a capability message from the UE indicating a set of waveform types that the UE can use, the indication of the set of transmitters being based at least in part on the capability message.

[0279] Aspect 32: The method of any of aspects 18 to 31, wherein each set of time resources and frequency resources for a transmitter of a set of transmitters is non-contiguous in time, non-contiguous in frequency, or non-contiguous in both time and frequency.

[0280] Aspect 33: The method of any of aspects 18 to 32, wherein the first waveform type includes a first waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or an OFDM waveform, and the second waveform type includes a second waveform of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or an OFDM waveform.

[0281] Aspect 34: An apparatus for wireless communication in a UE, the apparatus including a processor, a memory coupled to the processor, and instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to perform any of the methods of aspects 1 to 17.

[0282] Aspect 35: An apparatus for wireless communication in a UE, the apparatus comprising at least one means for performing the method of any of aspects 1-17.

[0283] Aspect 36: A non-transitory computer-readable medium storing code for wireless communication in a UE, the code including instructions executable by a processor to perform the method of any of aspects 1 to 17.

[0284] Aspect 37: An apparatus for wireless communication in a base station, the apparatus including: a processor; a memory coupled to the processor; and instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to perform any of the methods of aspects 18 to 33.

[0285] Aspect 38: An apparatus for wireless communication in a base station, the apparatus comprising at least one means for performing the method of any of aspects 18-33.

[0286] Aspect 39: A non-transitory computer-readable medium storing code for wireless communication in a base station, the code including instructions executable by a processor to perform the method of any of aspects 18 to 33.

[0287] It should be noted that the methods described herein describe possible implementations, that the operations and steps may be rearranged or otherwise modified, and that other implementations are possible. Furthermore, aspects from two or more of these methods may be combined.

[0288] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described as examples, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used throughout much of the description, the techniques described herein may be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR. For example, the described techniques may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0289] The information and signals described herein may be represented using any of a wide variety of technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0290] The various example blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, an 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 alternatively, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0291] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or code. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features implementing the functions may also be physically located in various locations, including being distributed so that portions of the functions are implemented in different physical locations.

[0292] Computer-readable media includes both non-transitory computer storage media and communication media, including any medium that facilitates transfer of a computer program from one place to another. Non-transitory storage media may be any available medium that can be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory, compact disc (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disk and disc include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically and discs reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0293] As used herein, including in the claims, "or" as used in a list of items (e.g., a list of items preceded by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such as, 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). Also, the phrase "based on" as used herein should not be construed as referring to a closed set of conditions. For example, an exemplary step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, the phrase "based on" as used herein should be construed similarly to the phrase "based at least in part on."

[0294] The terms "determine" or "determining" encompass a wide variety of actions, and thus "determining" can include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, database, or another data structure), ascertaining, etc. Also, "determining" can include receiving (such as receiving information), accessing (accessing data in a memory), etc. Also, "determining" can include resolving, selecting, choosing, establishing, or other such similar actions.

[0295] In the accompanying figures, similar components or features may have the same reference label. Furthermore, various components of the same type may be distinguished by following the reference label with a dash and a second label that distinguishes among the similar components. If only a first reference label is used herein, the description is applicable to any of the similar components having the same first reference label, regardless of a second reference label, or other subsequent reference label.

[0296] The description set forth herein with reference to the accompanying drawings illustrates exemplary configurations and does not necessarily represent every example that may be implemented or fall within the scope of the claims. As used herein, the term "exemplary" means "serving as an example, instance, or illustration" and does not mean "preferred" or "advantageous over other examples." The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.

[0297] The description herein is provided to enable any person skilled in the art to make or use the disclosure. Various modifications of the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not 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. [Explanation of symbols]

[0298] 100 Wireless Communication System 105 Base station 105-a base station 110 Geographic Coverage Areas 115 UE 115-a UE 120 backhaul links 125 communication links 130 Core Network 135 D2D communication links 140 Access Network Entity 145 Access Network Transmission Entity 200 Wireless Communication Systems 205 Communication Links 210 First transmitting unit 215 Second transmitting unit 220 Third Transmission Unit 300 Process Flow 305 First transmitting unit 310 Second transmitting unit 315 Third Transmission Unit 320 Fourth Transmission Unit 325 Fifth Transmission Unit 330 6th Transmitter 400 Process Flow 500 Block Diagram 505 devices 510 receiver 515 Transmitter 520 Communications Manager 600 Block Diagram 605 devices 610 Receiver 615 Transmitter 620 Communications Manager 625 Transmitter component elements 630 Transmitter communication component 700 Block Diagram 720 Communications Manager 725 Transmitter component elements 730 Transmitter communication component 735 System Information Components 740 Activation Component 745 Communication Timeline Components 750 Resource Authorization Components 755 Switching Gap Components 760 Deactivation Component 800 System 805 Devices 810 Input / Output (I / O) Controller 815 Transceiver 820 Communications Manager 825 Antenna 830 memory 835 Code 840 processor 845 Bus 900 Block Diagram 905 devices 910 Receiver 915 Transmitter 920 Communications Manager 1000 Block Diagram 1005 devices 1010 receiver 1015 Transmitter 1020 Communications Manager 1025 Transmitter component 1030 Transmitter communication component 1100 Block Diagram 1120 Communications Manager 1125 Transmitter component 1130 Transmitter communication component 1135 System Information Components 1140 Activation Component 1145 Communication Timeline Components 1150 Resource Authorization Components 1155 Switching Gap Component 1160 Deactivation Component 1200 System 1205 devices 1210 Network Communications Manager 1215 Transceiver 1220 Communications Manager 1225 Antenna 1230 memory 1235 Code 1240 processor 1245 Interstation Communication Manager 1300 methods 1400 methods 1500 ways 1600 methods

Claims

1. 1. A method for wireless communication in a user equipment (UE), comprising: receiving, from a base station, indications of sets of transmitters, each including a respective set of time and frequency resources, wherein at least one of the time resources and the frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and wherein the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; communicating with the base station during a first time period via the first transmitter via signaling based at least in part on the first waveform type; receiving from the base station a configuration of one or more switching gaps or one or more guard bands, each between a respective pair of transmitters in the set of transmitters; switching, during a switching gap of the one or more switching gaps, from communicating with the base station via the first transmitter associated with the first waveform type to communicating with the base station via the second transmitter associated with the second waveform type; communicating with the base station via the second transmitter during a second time period after the first time period via signaling based at least in part on the second waveform type; A method comprising:

2. receiving a system information block including a configuration of an initial transmitter that is different from the first transmitter and the second transmitter, the system information block associating the initial transmitter with an initial waveform type including the first waveform type, the second waveform type, or a third waveform type; communicating with the base station via the initial transmitter via signaling based at least in part on the initial waveform type prior to the first time period; The method of claim 1 further comprising:

3. receiving an indication of a default transmitter of the set of transmitters, the default transmitter including the first transmitter, and wherein the step of communicating with the base station during the first time period via the first transmitter is based at least in part on the indication of the default transmitter. The method of claim 1 further comprising:

4. receiving, from the base station, an activation message for one or more transmitters of the set of transmitters including the second transmitter, wherein the communicating via the second transmitter associated with the second waveform type is based at least in part on the activation message; The method of claim 1 further comprising:

5. each transmitter of said set of transmitters is for both uplink and downlink communications; The instructions associate each transmitter of the set of transmitters with a respective set of communication parameters common to the uplink communication and the downlink communication. The method of claim 1.

6. At least one of the first transmitter and the second transmitter is non-contiguous in time, and the step of communicating with the base station via the first transmitter or the second transmitter comprises: communicating according to a communication timeline that is transparent to one or more time gaps associated with at least one of the first transmitter and the second transmitter that are discontinuous in time; 2. The method of claim 1, comprising:

7. At least one of the first transmitter and the second transmitter is non-contiguous in time, and the step of communicating with the base station via the first transmitter or the second transmitter comprises: communicating according to a communication timeline that accounts for one or more time gaps associated with at least one of the first transmitter and the second transmitter being non-contiguous in time.

2. The method of claim 1, comprising:

8. receiving from the base station a grant for a transmission resource outside of one or more active transmitters of the set of transmitters; one of communicating with the base station over the transmission resources outside of the one or more active transmitters based at least in part on the grant, or refraining from communicating with the base station over the transmission resources outside of the one or more active transmitters based at least in part on the grant; The method of claim 1 further comprising:

9. transmitting a capability message to the base station indicating a set of waveform types that the UE is capable of using, the indication of the set being based at least in part on the capability message. The method of claim 1 further comprising:

10. 2. The method of claim 1, wherein the respective sets of time and frequency resources for a transmitter of the set of transmitters are non-contiguous in time, non-contiguous in frequency, or non-contiguous in both time and frequency.

11. the first waveform type comprises a first of a single-carrier frequency-domain waveform, a single-carrier time-domain waveform, or a multi-carrier waveform; The second waveform type includes a second of the single-carrier frequency-domain waveform, the single-carrier time-domain waveform, or the multi-carrier waveform. The method of claim 1.

12. 1. A method for wireless communication in a base station, comprising: transmitting, to a user equipment (UE), an indication of sets of transmitters, each including a respective set of time and frequency resources, wherein at least one of the time resources and the frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and wherein the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; communicating with the UE during a first time period via the first transmitter via signaling based at least in part on the first waveform type; transmitting to the UE a configuration of one or more switching gaps or one or more guard bands, each between a respective pair of transmitters in the set of transmitters; switching, during a switching gap of the one or more switching gaps, from communicating with the UE via the first transmitter associated with the first waveform type to communicating with the UE via the second transmitter associated with the second waveform type; communicating with the UE via the second transmitter during a second time period after the first time period via signaling based at least in part on the second waveform type; A method comprising:

13. 1. An apparatus for wireless communication in a user equipment (UE), comprising: means for receiving from a base station indication of sets of transmitters, each including a respective set of time and frequency resources, wherein at least one of the time resources and the frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and wherein the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; means for communicating with the base station via the first transmitter during a first time period via signaling based at least in part on the first waveform type; means for receiving from the base station a configuration of one or more switching gaps or one or more guard bands, each between a respective pair of transmitters in the set of transmitters; means for switching, during a switching gap of the one or more switching gaps, from communicating with the base station via the first transmitter associated with the first waveform type to communicating with the base station via the second transmitter associated with the second waveform type; means for communicating with the base station via the second transmitter during a second time period after the first time period via signaling based at least in part on the second waveform type; An apparatus comprising:

14. 1. An apparatus for wireless communication at a base station, comprising: means for transmitting, to a user equipment (UE), an indication of sets of transmitters, each including a respective set of time and frequency resources, wherein at least one of the time resources and the frequency resources included within the respective set of time and frequency resources varies for each transmitter of the set of transmitters, and wherein the indication associates a first transmitter of the set of transmitters with a first waveform type and a second transmitter of the set of transmitters with a second waveform type; means for communicating with the UE during a first time period via the first transmitter via signaling based at least in part on the first waveform type; means for transmitting to the UE a configuration of one or more switching gaps or one or more guard bands, each between a respective pair of transmitters in the set of transmitters; means for switching from communicating with the UE via the first transmitter associated with the first waveform type to communicating with the UE via the second transmitter associated with the second waveform type during a switching gap of the one or more switching gaps; means for communicating with the UE via the second transmitter during a second time period after the first time period via signaling based at least in part on the second waveform type; An apparatus comprising:

15. A computer program comprising instructions which, when executed by a computer, cause the computer to perform the steps of the method of any one of claims 1 to 11 or claim 12.

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