Method and apparatus for wireless communication at UE and base station

Abstract

Methods, systems, and devices for wireless communications are described. To support communications across a broadband, a base station and a user equipment (UE) may communicate across a broadband using a subband set that spans a carrier bandwidth (e.g., a broadband). In some cases, the UE may send an indication to the base station of the UE's ability to transmit broadband communications with the base station via a subband-based communication set with the base station. The UE may receive a configuration from the base station (and in some cases, based on the capabilities of the UE) for communicating with the base station in the carrier bandwidth using the subband set. The UE may then communicate with the base station in the carrier bandwidth using one or more subbands in the subband set according to the configuration.

Description

[0001] Cross-references

[0002] This patent application claims priority to the following applications: U.S. patent application No. 17 / 375,905, filed by YERRAMALLI et al. on July 14, 2021, entitled “COMMUNICATING ACROSS A WIDEBAND USING SUB-BANDS”; and U.S. Provisional Patent Application No. 63 / 056,321, filed by YERRAMALLI et al. on July 24, 2020, entitled “COMMUNICATING ACROSS A WIDEBAND USING SUB-BANDS”, which are assigned to the assignee of this application. Technical Field

[0003] The following relates to wireless communications, including the use of sub-bands to communicate across a broadband. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcasting, etc. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (such as long term evolution (LTE) systems, improved LTE (LTE-A) systems, or LTE-A Pro systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may use technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform extended 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 base station or network access node simultaneously supporting communication for multiple communication devices (which may be additionally referred to as user equipment (UE)).

[0005] Some wireless communication systems may support communication on broadband carrier bandwidths. That is, some wireless communication systems may support communication using a high transmission bandwidth to center frequency ratio (e.g., greater than five percent, ten percent, or some other threshold percentage). Therefore, communication devices may operate using large carrier bandwidths. In addition, these communication devices may support communications in millimeter bands (e.g., from 30 gigahertz (GHz) to 300 GHz). In some cases, due to changes in array responses across carrier bandwidths, broadband communications in millimeter bands or other radio frequency spectrum bands may suffer from reduced reliability. For example, wireless devices may use communication beams to optimize broadband communications for the center frequency of a carrier bandwidth. However, due to large carrier bandwidths and communication beams that operate in different ways at different frequencies, signals sent at different frequencies (e.g., relatively far from the center frequency) across carrier bandwidths may suffer from performance degradation and reduced reliability. Summary of the invention

[0006] The described technology relates to improved methods, systems, devices and apparatuses for supporting communication across broadband using subbands. In general, the described technology relates to a subband set across a broadband carrier bandwidth. For example, a user equipment (UE) may receive a configuration from a base station for communicating with a base station in a carrier bandwidth using a subband set. In some cases, the UE may send an indication of the ability of the UE to transmit broadband communications with the base station via a subband set to the base station. That is, the UE may be configured for communication on a first subset of subbands across a carrier bandwidth (e.g., optimized for communication on a subset of subbands). Here, the receiving configuration may be based on the UE sending an indication of the ability of the UE to communicate in the carrier bandwidth. In some cases, the base station may be additionally optimized for communication on a second subset of subbands across the carrier bandwidth. Here, the configuration for communicating in the carrier bandwidth may be based on a first subset of subbands and a second subset of subbands. Then, the UE and the base station may communicate in the carrier bandwidth using one or more subbands in the subband set according to the configuration.

[0007] A method of wireless communication at a UE is described. The method may include: identifying a carrier bandwidth for transmitting broadband communications with a base station; receiving a configuration from the base station for communicating with the base station in the carrier bandwidth using a subband-based communication set on a set of subbands spanning the carrier bandwidth; and communicating with the base station in the carrier bandwidth using one or more subbands in the set of subbands according to the configuration.

[0008] An apparatus for wireless communication at 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 perform the following operations: identify a carrier bandwidth for transmitting broadband communications with a base station; receive from the base station a configuration for communicating with the base station in the carrier bandwidth using a subband-based communication set on a subband set spanning the carrier bandwidth; and communicate with the base station in the carrier bandwidth using one or more subbands in the subband set according to the configuration.

[0009] Another apparatus for wireless communication at a UE is described. The apparatus may include means for: identifying a carrier bandwidth for transmitting broadband communications with a base station; receiving from the base station a configuration for communicating with the base station in the carrier bandwidth using a subband-based communication set on a set of subbands spanning the carrier bandwidth; and communicating with the base station in the carrier bandwidth using one or more subbands in the set of subbands according to the configuration.

[0010] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: identify a carrier bandwidth for transmitting broadband communications with a base station; receive from the base station a configuration for communicating with the base station in the carrier bandwidth using a subband-based communication set on a set of subbands spanning the carrier bandwidth; and communicate with the base station in the carrier bandwidth using one or more subbands in the set of subbands according to the configuration.

[0011] A method of wireless communication at a base station is described. The method may include: identifying a carrier bandwidth for transmitting broadband communications with a UE; sending a configuration to the UE for communicating with the base station in the carrier bandwidth using a subband-based communication set on a set of subbands spanning the carrier bandwidth; and communicating with the UE in the carrier bandwidth using one or more subbands in the set of subbands according to the configuration.

[0012] An apparatus for wireless communication at 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 perform the following operations: identify a carrier bandwidth for transmitting broadband communications with a UE; send a configuration to the UE for communicating with the base station in the carrier bandwidth using a subband-based communication set on a subband set spanning the carrier bandwidth; and communicate with the UE in the carrier bandwidth using one or more subbands in the subband set according to the configuration.

[0013] Another apparatus for wireless communication at a base station is described. The apparatus may include means for identifying a carrier bandwidth for transmitting broadband communications with a UE, sending a configuration to the UE for communicating with the base station in the carrier bandwidth using a subband-based communication set on a set of subbands spanning the carrier bandwidth, and communicating with the UE in the carrier bandwidth using one or more subbands in the set of subbands according to the configuration.

[0014] A non-transitory computer-readable medium storing code for wireless communication at a base station is described. The code may include instructions executable by a processor to: identify a carrier bandwidth for transmitting broadband communications with a UE; send a configuration to the UE for communicating with the base station in the carrier bandwidth using a subband-based communication set on a set of subbands spanning the carrier bandwidth; and communicate with the UE in the carrier bandwidth using one or more subbands in the set of subbands according to the configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 An example of a system for wireless communications that supports communication across a broadband using sub-bands in accordance with aspects of the present disclosure is shown.

[0016] Figure 2 An example of a system supporting communication across a broadband using sub-bands in accordance with aspects of the present disclosure is shown.

[0017] Figures 3A to 4B An example of a carrier scheme supporting communication across a broadband using sub-bands according to aspects of the present disclosure is shown.

[0018] Figure 5 An example of a process flow that supports communication across a broadband using sub-bands in accordance with aspects of the present disclosure is shown.

[0019] Figure 6 and 7A block diagram of a device supporting communication across a broadband using sub-bands is shown in accordance with aspects of the present disclosure.

[0020] Figure 8 A block diagram of a coding manager supporting communication across a wideband using sub-bands in accordance with aspects of the present disclosure is shown.

[0021] Fig. 9 A schematic diagram of a system including a device that supports communication across a broadband using sub-bands in accordance with aspects of the present disclosure is shown.

[0022] Fig.10 and 11 A block diagram of a device supporting communication across a broadband using sub-bands is shown in accordance with aspects of the present disclosure.

[0023] Fig.12 A block diagram of a communication manager supporting communication across a broadband using sub-bands in accordance with aspects of the present disclosure is shown.

[0024] Fig.13 A schematic diagram of a system including a device that supports communication across a broadband using sub-bands in accordance with aspects of the present disclosure is shown.

[0025] Figures 14 to 17 A flow chart illustrating a method of supporting communications across a broadband using sub-bands according to aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0026] Some wireless communication systems may include communication devices such as UEs and base stations (e.g., evolved Node Bs (eNBs), next generation Node Bs, or Gigabit Node Bs (any of which may be referred to as gNBs) or some other base station) that may support multiple radio access technologies (RATs). Examples of RATs include 4G systems (such as LTE systems) and 5G systems (which may be referred to as NR systems). In some cases, the UE and the base station may support wideband carrier bandwidths. That is, the UE and the base station may communicate on one or more carriers having a relatively high carrier bandwidth to center frequency ratio (e.g., greater than five percent, ten percent, or some other threshold percentage). In addition, in some examples, the UE may perform channel estimation on one or more physical channels to maintain a reliable and efficient communication link between the UE and the base station.

[0027] In some cases, a millimeter wave (mmW) system operating with a large carrier bandwidth may experience variations in array response across the carrier bandwidth. For example, a base station or UE or both may use a communication beam for a center frequency of the carrier bandwidth to optimize wideband communications. However, due to the large carrier bandwidth and the communication beams operating in different ways at different frequencies, signals sent at different frequencies (e.g., relatively far from the center frequency) across the carrier bandwidth may potentially experience significant degradation. As a result, the channel estimation performance of the UE for a wideband carrier may be less reliable (e.g., compared to communications over a narrower carrier bandwidth), and the wireless communication system may suffer performance degradation.

[0028] In order to support reliable transmission for broadband communication, the wide carrier bandwidth may include a subband set across the carrier bandwidth. Therefore, the UE and the base station can communicate using one or more subbands in the subband set, which may be associated with less performance degradation when compared to communication across the entire carrier bandwidth. In some cases, the UE may send an indication of the ability of the UE to transmit broadband communication with the base station via the subband set to the base station. That is, the UE may be configured for communication on a first subset of subbands across the carrier bandwidth (e.g., optimized for communication on a subset of subbands). In response, the base station may send a configuration for communicating with the UE in the carrier bandwidth using the subband set. In some cases, the base station may be additionally optimized for communication on a second subset of subbands across the carrier bandwidth. Here, the configuration for communicating in the carrier bandwidth may be based on a first subset of subbands and a second subset of subbands. Then, the UE and the base station may communicate in the carrier bandwidth using one or more subbands in the subband set according to the configuration.

[0029] Aspects of the disclosure are first described in the context of wireless communication systems. Aspects of the disclosure are then described in the context of carrier schemes and process flows. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flow diagrams involving communicating across broadband using subbands.

[0030] Figure 1An example of a wireless communication system 100 supporting communication across a broadband using subbands according to aspects of the present disclosure is shown. 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 improved LTE (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, or communications with low-cost and low-complexity devices, or any combination thereof.

[0031] Base stations 105 may be dispersed throughout a geographic area to form a wireless communication system 100, and may be devices of different forms or with different capabilities. Base stations 105 and UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which UEs 115 and base stations 105 may establish one or more communication links 125. A coverage area 110 may be an example of a geographic area over which base stations 105 and UEs 115 may support transmission of signals in accordance with one or more radio access technologies.

[0032] UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary, mobile, or both at different times. UEs 115 may be devices of different forms or with different capabilities. Figure 1 Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115, base stations 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices), such as Figure 1 as shown in .

[0033] The base stations 105 may communicate with the core network 130, or communicate with each other, or perform both operations. For example, the base stations 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3 or other interfaces). The base stations 105 may communicate with each other directly (e.g., directly between the base stations 105) on the backhaul links 120 (e.g., via X2, Xn or other interfaces), or communicate with each other indirectly (e.g., via the core network 130), or perform both operations. In some examples, the backhaul links 120 may be or include one or more wireless links.

[0034] One or more of the base stations 105 described herein may include or may be referred to by a person of ordinary skill in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a Home Node B, a Home Evolved Node B, or other appropriate terminology.

[0035] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other appropriate terminology, where a "device" may also be referred to as a unit, a station, a terminal, or a client, among other examples. UE 115 may also include or may 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, 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 examples, which may be implemented in various items such as appliances, or vehicles, meters, and among other examples.

[0036] The UE 115 described herein may be able to communicate with various types of devices, such as other UEs 115, which may sometimes act as relays, as well as base stations 105 and network devices, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, such as Figure 1 as shown in .

[0037] 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, a carrier for the communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling to coordinate operations for 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. Depending on the carrier aggregation configuration, the UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers.

[0038] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling to coordinate operations for other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be placed according to a channel grid to be discovered by a UE 115. A carrier may operate in a standalone mode, where a UE 115 may perform initial acquisition and connection via a carrier, or a carrier may operate in a non-standalone mode, where a different carrier (e.g., of the same or different radio access technology) is used to anchor the connection.

[0039] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission 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 both downlink and uplink communications (e.g., in TDD mode).

[0040] A carrier may be associated with a particular bandwidth of a radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a number of determined bandwidths of a carrier for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). A device of the wireless communication system 100 (e.g., a base station 105, a UE 115, or both) may have a hardware configuration that supports communication on a particular carrier bandwidth, or may be configurable to support communication on 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 via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a subband, a BWP) or all of a carrier bandwidth.

[0041] The signal waveform transmitted on the carrier may be composed of multiple subcarriers (e.g., using a multicarrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may be composed of a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, wherein the symbol period and the subcarrier spacing are inversely related. The number 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). Therefore, the more resource elements received by the UE 115 and the higher the order of the modulation scheme, the higher the data rate for the UE 115 can be. 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 communication with the UE 115.

[0042] One or more numerologies for a carrier may be supported, where the numerologies may include subcarrier spacing (Δf) and cyclic prefixes. 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 communications for a UE 115 may be limited to the one or more active BWPs.

[0043] The basic time unit (which may be referred to as T s =1 / (Δf max ·N f ) seconds sampling period, where Δf max It can represent the maximum supported subcarrier spacing, and N f The time intervals for the base station 105 or the UE 115 may be expressed as multiples of a maximum supported discrete Fourier transform (DFT) size). The time intervals of the communication resources 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).

[0044] Each frame may include a plurality of consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into a number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a number of symbol periods (e.g., depending on the length of a cyclic prefix added in front of each symbol period). In some wireless communication systems 100, a time slot may be further divided into a plurality of micro-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0045] A subframe, slot, mini-slot, 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 number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in the form of bursts of shortened TTIs (sTTIs)).

[0046] Physical channels may be multiplexed on a carrier according to various techniques. For example, one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique may be used to multiplex physical control channels and physical data channels on a downlink carrier. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by the number of symbol periods and may extend across a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a group of UEs 115. For example, one or more of the UEs 115 may monitor or search a 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 number of control channel resources (e.g., control channel elements (CCEs)) associated with coding 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 .

[0047] In some examples, base stations 105 may be mobile and, therefore, provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of base stations 105 provide coverage for respective geographic coverage areas 110 using the same or different radio access technologies.

[0048] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE115 can be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication, and can 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 functions can include prioritization of services, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency can be used interchangeably in this article.

[0049] In some examples, UE 115 may be able to communicate directly with other UE 115 on a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within a geographic coverage area 110 of a base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105 or otherwise unable to receive transmissions from the base station 105. In some examples, groups of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system, wherein each UE 115 transmits to each other UE 115 in the group. In some examples, the base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without involving the base station 105.

[0050] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connection, and other access, routing or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 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)) for managing 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)) for routing packets to an external network or interconnecting to an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by a base station 105 associated with the core network 130. User IP packets may be transmitted through a user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to a network operator IP service 150. The network operator IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0051] Some of the network devices (e.g., base stations 105) may include subcomponents such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with the UE 115 through one or more other access network transport entities 145 (which may be referred to as radio heads, smart radio heads, or transmit / receive points (TRPs)). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or merged into a single network device (e.g., base station 105).

[0052] 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). Typically, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, but the waves may be sufficient to penetrate structures for macro cells to provide service to UEs 115 located indoors. Transmissions using UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0053] The wireless communication system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 can employ license 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 base stations 105 and UEs 115) can employ carrier sensing for conflict detection and avoidance. In some examples, operations in unlicensed bands can be based on a carrier aggregation configuration in combination with component carriers operating in a licensed band (e.g., LAA). Operations in the unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, as well as other examples.

[0054] The base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels (which may support MIMO operations or transmit or receive beamforming). For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station 105 may be located at different geographical locations. The base station 105 may have an antenna array having antenna ports of a number of rows and columns that the base station 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals sent via the antenna ports.

[0055] The base station 105 or UE 115 can use MIMO communication to exploit multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. Such a technology may be referred to as spatial multiplexing. For example, a transmitting device may send multiple signals via different antennas or different combinations of antennas. Similarly, a receiving device may receive multiple signals 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 associated with 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 for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO) (where multiple spatial layers are sent to the same receiving device) and multi-user MIMO (MU-MIMO) (where multiple spatial layers are sent to multiple devices).

[0056] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to form or direct an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array so that some signals propagating in a specific orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of the antenna elements may be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0057] As part of the beamforming operation, the base station 105 or the UE 115 may use beam scanning techniques. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communications with the UE 115. The base station 105 may send some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) multiple times in different directions. For example, the base station 105 may send signals based on different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by a transmitting device (such as the base station 105) or by a receiving device (such as the UE 115)) to identify a beam direction for subsequent transmission or reception by the base station 105.

[0058] Base station 105 may transmit some signals (such as data signals associated with a particular receiving device, such as UE 115) in a single beam direction (e.g., a direction associated with the receiving device). 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, UE 115 may receive one or more of the signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 having the highest signal quality or otherwise acceptable signal quality.

[0059] In some examples, transmissions by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may generate a combined beam for transmission (e.g., from the base station 105 to the UE 115) using a combination of digital precoding or radio frequency beamforming. The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. The base station 105 may send reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (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 of codebook, a linear combination type of codebook, a port selection type of codebook). Although these techniques are described with reference to signals sent by base station 105 in one or more directions, UE 115 may employ similar techniques to send signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115) or to send signals in a single direction (e.g., to send data to a receiving device).

[0060] When receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from the base station 105, the receiving device (e.g., UE 115) can try multiple reception configurations (e.g., directional listening). For example, the receiving device can try multiple reception directions by receiving via different antenna subarrays, by processing the received signals according to different antenna subarrays, by receiving according to different reception beamforming weight sets applied to the signals received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets), or by processing the received signals according to different reception beamforming weight sets applied to the signals received at multiple antenna elements of the antenna array (any of the above operations may be referred to as "listening" according to different reception configurations or reception directions). In some examples, the receiving device can use a single reception configuration to receive along a single beam direction (e.g., when receiving a data signal). A single receive configuration may be aligned on a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality based on listening according to multiple beam directions).

[0061] UE 115 and base station 105 can support retransmission of data to increase the possibility that the data is successfully received. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the possibility that data is correctly received on communication link 125. HARQ can include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC) and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve the throughput at the medium access control (MAC) layer under poor radio conditions (e.g., low signal and noise conditions). In some examples, the device can support the same time slot HARQ feedback, wherein the device can provide HARQ feedback for data received in the previous symbol in the time slot in a specific time slot. In other cases, the device can provide HARQ feedback in subsequent time slots or according to some other time interval.

[0062] The wireless communication system 100 can support broadband array operation. That is, the wireless communication system 100 can use a high transmission bandwidth to center frequency ratio to support broadband communication between the base station 105 and the UE 115. In some cases, if the transmission bandwidth to center frequency ratio is greater than a threshold percentage (e.g., five percent, ten percent, or some other threshold percentage), the wireless communication system 100 can be considered a broadband system. In some such systems, the base station 105 and the UE 115 can communicate on one or more carriers with a relatively large carrier bandwidth. In some cases, the array response of the base station 105, the UE 115, or both can change across the carrier bandwidth. For example, a signal sent at various frequencies (e.g., relatively far from the center frequency) across the carrier bandwidth may suffer from moderate to severe signal loss (e.g., SINR loss), or may not be detected by the UE 115 due to changes in the array response across the bandwidth. Signal loss may potentially lead to a reduction in transmission reliability and a loss of performance.

[0063] Various aspects of the described technology support communication across broadband using subbands. For example, a wide carrier bandwidth may include a set of subbands across a carrier bandwidth. Therefore, UE 115 and base station 105 may communicate using one or more subbands in the set of subbands, which may be associated with less performance degradation when compared to communication across the entire carrier bandwidth. In some cases, UE 115 may send an indication of the ability of UE 115 to transmit broadband communication with base station 105 via a set of subbands to base station 105. That is, UE 115 may be configured for communication on a first subset of subbands across a carrier bandwidth (e.g., optimized for communication on a subset of subbands). In response, base station 105 may send a configuration for communicating with UE 115 in a carrier bandwidth using a set of subbands. In some cases, base station 105 may be additionally optimized for communication on a second subset of subbands across a carrier bandwidth. Here, the configuration for communicating in a carrier bandwidth may be based on a first subset of subbands and a second subset of subbands. The UE 115 and the base station 105 may then communicate in the carrier bandwidth using one or more subbands in the subband set according to the configuration.

[0064] Figure 2 An example of a wireless communication system 200 that supports communication across a broadband using subbands according to aspects of the present disclosure is shown. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100. For example, the wireless communication system 200 can include a base station 105-a and a UE 115-a, which can be as described with reference to Figure 1 An example of a base station 105 and a UE 115 described. In some examples, the wireless communication system 200 can support one or more radio access technologies, including a 4G system (such as an LTE system, an LTE-A system, or an LTE-APro system), a 5G system (which can be referred to as an NR system), or a combination of these or other radio access technologies. In addition, the base station 105-a and the UE 115-a can communicate on a carrier 205, which spans a broadband (e.g., a carrier bandwidth 210) and can include a subband set 215 that spans the carrier bandwidth 210.

[0065] The base station 105-a and the UE 115-a may be configured with multiple antenna ports, which may be used to employ techniques such as transmit diversity, receive diversity, MIMO communication, beamforming, or a combination thereof. The antenna ports, physical antennas, or both of the base station 105-a and the UE 115-a may be located within one or more corresponding antenna arrays or antenna panels (which may support MIMO operations, transmit beamforming, receive beamforming, or a combination thereof). For example, the antennas or antenna arrays of the base station 105-a may be co-located at an antenna assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station 105-a may be located at different geographic locations. The base station 105-a may have an antenna array having multiple rows and columns of antenna ports, which the base station 105-a may use to support beamforming for communications with the UE 115-a. Similarly, the UE 115-a may have one or more antenna arrays that may support various MIMO operations, beamforming operations, or both. Additionally or alternatively, the antenna panel may support radio frequency beamforming of signals transmitted via one or more antenna ports.An antenna may refer to an antenna element, an antenna panel, or a collection of antennas, among other examples.

[0066] In some cases, multiple antenna panels (e.g., at base station 105-a, at UE 115-a, or at both base station 105-a and UE 115-a) may each be configured for communication on one of subbands 215. Here, each antenna panel may send communications over the subband associated with that antenna panel. For example, UE 115-a may include two antenna panels: a first antenna panel that is configured for communication over subband 215-a; and a second antenna panel that is configured for communication over subband 215-b. Here, UE 115-a may send communications 230 over subband 215-a using the first antenna panel, and may send communications 230 over subband 215-b using the second antenna panel.

[0067] In some cases, each antenna panel may include a different element spacing to optimize communications via an associated subband 215. In addition, each antenna panel may generate a beam using a different set of phases so that the beam is optimized for communications via one or more subbands 215 of the carrier bandwidth 210. In addition, each antenna panel may include a delay element that may be used in conjunction with different element spacings and may compensate for different element spacings (e.g., associated with different antenna panels). In an example of a wireless communication system 200, one of the base station 105-a or the UE 115-a may include multiple antenna panels (e.g., each antenna panel is associated with one of the subbands 215), and the other of the base station 105-a or the UE 115-a may include a single antenna panel. In another example, both the base station 105-a and the UE 115-a may include multiple panels. In yet another example, both the base station 105-a and the UE 115-a may include a single antenna panel.

[0068] In some cases, the UE 115-a may optionally send a UE capability indication 220 to the base station 105-a. For example, the UE capability indication 220 may indicate the ability of the UE 115-a to transmit broadband communications with the base station 105-a via a subband set 215 (e.g., via a set of subband-based communications). For example, the UE capability indication 220 may indicate an optimized method across the carrier bandwidth 210 or some other information related to the configuration of the antenna at the UE 115-a (e.g., information specific to an antenna panel). That is, the UE capability indication 220 may indicate an element spacing associated with one or more antenna panels at the UE 115-a. In addition, the UE capability indication 220 may indicate a delay element on one or more antenna panels at the UE 115-a. In another example, the UE capability indication 220 may indicate one or more subbands within the carrier bandwidth 210. Here, the UE 115-a may be optimized for communication on one or more subbands 215 (e.g., based on an antenna configuration at the UE 115-a), and the UE capability indication 220 may indicate the one or more subbands 215 via which the UE 115-a is optimized. In another example, the UE capability indication 220 may include a list of one or more frequencies or bandwidths (e.g., 70 GHz, 4 GHz bandwidth, 64 GHz, 2 GHz bandwidth) within the carrier bandwidth 210. That is, the antenna configuration of the UE 115-a may optimize the UE 115-a for communication via the one or more frequencies or bandwidths.

[0069] The base station 105-a may identify a configuration 225 for communicating with the UE 115-a in the carrier bandwidth 210 using the set of subbands 215 (e.g., based on the capabilities of the UE 115-a). In some cases, the base station 105-a may additionally identify the configuration 225 based on the capabilities of the base station 105-a for communicating with the UE 115-a in the carrier bandwidth 210 using the set of subbands 215. For example, the antenna configuration of the UE 115-a may be associated with a first subset of the subbands 215, and the antenna configuration of the base station 105-a may be associated with a second subset of the subbands 215. Here, the base station 105-a may identify the configuration 225 based on the intersection of the first and second subsets of the subbands 215. For example, the base station 105-a may identify the configuration 225 associated with the subband 215 that is associated with the antenna configuration of the UE 115-a and the antenna configuration of the base station 105-a.

[0070] The configuration 225 may additionally indicate one or more guard bands 235 within the carrier bandwidth 210. That is, the carrier bandwidth 210 may include a set of subbands 215 for communications 230 between the base station 105-a and the UE 115-a. Additionally, the carrier bandwidth 210 may include a set of guard bands 235 associated with a set of frequency resources within the carrier bandwidth 210 in which communications 230 between the base station 105-a and the UE 115-a are not performed. That is, communications 230 sent via a set of frequency resources near the edge of the subband 215 may be associated with increased degradation when compared to communications 230 sent via a set of frequency resources that are closer to the center frequency of the subband 215 (e.g., closer to the center frequency of the frequency range used by the UE 115-a). In some cases, the guard bands 235 may reduce the severity of the degradation associated with the communications 230 because the communications 230 may be sent via frequency resources that are closer to the center frequency of the subband 215.

[0071] The base station 105-a may send the configuration 225 to the UE 115-a. In some cases, the base station 105-a may additionally send an indication of base station capabilities (e.g., an indication of one or more subbands 215 or frequencies associated with the antenna configuration of the base station 105-a). Additionally, the configuration 225 may indicate the guard band 235 to the UE 115-a. For example, the configuration 225 may indicate one or more indexes associated with resource blocks within the guard band 235 (e.g., resource block indexes). In some cases, the base station 105-a may send the indication of the guard band 235 via remaining minimum system information (RMSI) or dedicated signaling (e.g., based on the antenna configuration of the UE 115-a). Based on receiving the indication of the guard band 235, the UE 115-a may identify the guard band 235. For example, UE 115-a may identify a set of frequency resources between subband 215-a and subband 215-b that are associated with guard band 235-a within carrier bandwidth 210. Here, UE 115-a may avoid sending or receiving communications 230 with base station 105-a via the set of frequency resources of guard band 235-a based on identifying guard band 235-a.

[0072] The base station 105-a and the UE 115-a may then communicate (e.g., via communication 230) on the carrier 205 in the carrier bandwidth 210 using the one or more subbands 215 and in accordance with the configuration 225. For example, the base station 105-a may send one or more reference signals to the UE 115-a via the communication 230. Additionally, the communication 230 may include physical downlink control channel transmissions, physical downlink shared channel transmissions, and physical uplink shared channel transmissions.

[0073] Figure 3A and 3B An example of a carrier scheme 300 that supports communication across a broadband using subbands according to aspects of the present disclosure is shown. In some examples, the carrier scheme 300 can be implemented as described in reference to Figure 1 and 2 For example, the carrier scheme 300 may include a set of subbands 315 across a carrier bandwidth 310, as described with reference to Figure 1 and 2 In addition, the carrier scheme 300 may include a reference signal 305, which may be a reference signal Figure 2 For example, the base station may send one or more of the reference signals 305 to the UE according to the configuration for communicating in the carrier bandwidth using the subband set 315, as shown in FIG. Figure 1 and 2The carrier scheme 300 - a may illustrate a first configuration for the reference signal 305 , and the carrier scheme 300 - b may illustrate a second configuration for the reference signal 305 .

[0074] The reference signal 305 may be a channel state information reference signal, a sounding reference signal, a tracking reference signal, a phase tracking reference signal, or a demodulation reference signal. When the UE receives one or more reference signals 305 from the base station, the UE may perform one or more channel estimation processes. In some cases, the UE may perform an independent channel estimation process for each subband 315. That is, the UE may perform a first channel estimation process for subband 315-a (e.g., based on reference signal 305-a), and a second channel estimation process for subband 315-b (e.g., based on reference signal 305-b). In another example, the UE may perform a first channel estimation process for subband 315-d (e.g., based on a portion of reference signal 305-d received via subband 315-d), and a second channel estimation process for subband 315-e (e.g., based on a portion of reference signal 305-d received via subband 315-e).

[0075] Based on performing one or more channel estimation processes, the UE may make radio resource management measurements to the base station. In some cases, the UE may indicate one or more radio resource management measurements for the entire carrier bandwidth 310. In another case, the UE may indicate one or more radio resource management measurements for each subband 315 separately. In some other cases, the UE may indicate one or more radio resource management measurements for a subset of subbands. For example, the UE may indicate radio resource management measurements for subband 315-e and subband 315-f.

[0076] Figure 3A A carrier scheme 300-a associated with communications may be shown in which a base station transmits a separate reference signal 305 via each of the subbands 315 of the carrier bandwidth 310-a. Here, the base station may transmit the reference signal 305 via each of the subbands 315 of the subbands 315. Additionally, each reference signal 305 may be associated with a unique identifier indicating the subband. For example, reference signal 305-b may be associated with a first identifier indicating subband 315-b, and reference signal 305-c may be associated with a second identifier different from the first identifier and indicating subband 315-c.

[0077] Figure 3BA carrier scheme 300-b associated with communications may be shown in which a base station transmits a reference signal 305 that spans more than one subband 315 within a carrier bandwidth 310-b. For example, the base station may transmit a reference signal 305-d associated with a first identifier indicating the carrier bandwidth 310-b. Additionally, the reference signal 305-d may be associated with additional identifiers that each indicate a subband 315. For example, a portion of the reference signal 305-d within the subband 315-d may be associated with an identifier indicating the subband 315-d. Additionally, a portion of the reference signal 305-d within the subband 315-e may be associated with an identifier indicating the subband 315-e.

[0078] In the case of carrier schemes 300-a and 300-b, the reference signal identifier indicating the subband may additionally signal the UE with a transmission configuration indicator (TCI) state, quasi-co-location (QCL) reference information, or both associated with the subband. The TCI state may indicate to the UE the directionality associated with communications received or sent by the associated subband 315. In addition, the QCL reference information may indicate to the UE whether one or more attributes associated with the first subband 315 may be assumed for the second subband 315 (e.g., if the two subbands are quasi-co-located). That is, each subband 315 may be associated with a TCI state and QCL reference information. In some cases, each subband 315 may be associated with a unique TCI state, a unique QCL reference information, or both. Additionally or alternatively, a subset of subbands 315 within the carrier bandwidth 310 may be associated with a unique TCI state, a unique QCL reference information, or both.

[0079] Figure 4A and 4B An example of a carrier scheme 400 that supports communication across a broadband using subbands according to aspects of the present disclosure is shown. In some examples, the carrier scheme 400 can be implemented as described in reference to Figure 1 and 2 For example, the carrier scheme 400 may include a set of subbands 415 across a carrier bandwidth 410, as described with reference to Figure 1 and 2 In addition, carrier scheme 400 may include transmission 405, which may be as described with reference to Figure 2 For example, a base station may send one or more of transmissions 405 (e.g., physical downlink control channel transmissions, physical downlink shared channel transmissions) to a UE according to a configuration for communicating in a carrier bandwidth 410 using a subband set 415, as described with reference to Figure 1 and 2Additionally, the UE may send one or more of the transmissions 405 (eg, physical uplink shared channel transmissions) to the base station in accordance with the configuration for communicating in the carrier bandwidth 410 .

[0080] In some cases, the base station may send one or more physical downlink control channel transmissions to the UE that schedule transmission 405, feedback message 420, or both. In some cases, the base station may send a single physical downlink control channel transmission within one or more subbands 415 to schedule transmission 405. In one example, the base station may send a single physical downlink transmission within a single subband 415. In another example, the base station may send a single physical downlink control channel transmission across more than one subband 415. In some other cases, the base station may send a physical downlink control channel transmission within a subband 415 that schedules transmission 405 associated with the subband 415. That is, the base station may send a physical downlink control channel transmission over subband 415-c to schedule transmission 405 via subband 415-c.

[0081] Each carrier scheme may additionally indicate an optional feedback message 420 (e.g., an acknowledgement or negative acknowledgement message). For example, the UE may indicate via feedback whether decoding of one or more of the transmissions 405 was successful. In some cases, the UE may send a single feedback message 420 for each of the transmissions 405. For example, feedback message 420-a may indicate successful decoding of each of transmissions 405-a, 405-b, and 405-c. Additionally, feedback message 420-b may indicate whether transmissions 405-d and 405-e were successfully decoded.

[0082] Carrier scheme 400-a may illustrate a first configuration for transmission 405, and carrier scheme 400-b may illustrate a second configuration for transmission 405. In some cases, communication between a base station and a UE (e.g., as described with reference to Figure 2 400-a) may utilize aspects of one or both of the carrier schemes 400. That is, a first type of transmission 405 (e.g., a physical downlink shared channel transmission, a physical uplink shared channel transmission) may be sent in accordance with the carrier scheme 400-a, while a second type of transmission 405 may be sent in accordance with the carrier scheme 400-b.

[0083] Figure 4AA carrier scheme 400-a associated with a communication may be shown, wherein a transmission 405 is sent via each of the subbands 415 of a carrier bandwidth 410-a. For example, each transmission 405 may be associated with the same channel (e.g., a physical downlink shared channel, a physical uplink shared channel). In addition, each of the transmissions 405 may include one or more transmission blocks, each of which is contained within a single subband 415. For example, a transmission 405-a may include a single transmission block associated with a frequency resource within a subband 415-a. In addition, each transmission 405-a may be associated with a unique modulation and coding scheme, rank, or both. Additionally or alternatively, each transmission 405 may be received by a receive beam direction based on the associated subband 415.

[0084] For example, if the UE receives transmission 405-b from the base station, the UE may select a receive beam direction based on that transmission 405-b is received via subband 415-b (e.g., where the UE includes more than one antenna panel). Thus, the demodulation reference signal associated with each of transmissions 405 may be processed separately. For example, the UE may perform a first channel estimation process associated with subband 415-b (e.g., using the demodulation reference signal within transmission 405-b) and may perform a second channel estimation process associated with subband 415-c (e.g., using the demodulation reference signal within transmission 405-c).

[0085] Figure 4B A carrier scheme 400-b associated with a communication may be shown, wherein a transmission 405 spans more than one subband 415 within a carrier bandwidth 410-b. For example, each transmission 405 may be associated with the same channel (e.g., a physical downlink shared channel, a physical uplink shared channel). Additionally, a transmission 405-d spans subbands 415-d, 415-e, and 415-f. In some cases, a transmitting device may utilize an interleaver to map data to resources of a transmission 405-d spanning subbands 415. In some cases, an interleaver may map data to resources within a first subband 415 before mapping the data to resources within a second subband 415. For example, an interleaver may map all data to resources within subband 415-d before mapping any data to resources within subband 415-e.

[0086] Here, transmission 405-d can be associated with more than one carrier block or carrier block group (e.g., resource block). For example, transmission 405-d can be associated with a first carrier block or carrier block group within subband 415-d and a second carrier block or carrier block group within subband 415-e. In some cases, each carrier block or carrier block group (e.g., within subband 415) can be associated with a modulation and coding scheme based on subband 415. For example, a carrier block or carrier block group carrying transmission 405-d within subband 415-f can be associated with a modulation and coding scheme that is selected to increase the reliability of transmission 405-d within subband 415-f.

[0087] Figure 5 An example of a process flow 500 for supporting communication across a broadband using subbands according to aspects of the present disclosure is shown. In some examples, the process flow 500 may be implemented as described with reference to Figure 1 and 2 Aspects of the wireless communication system 100 or 200 are described. The process flow 500 may be based on the configuration of the base station 105-b or the UE 115-b and may be implemented by the UE 115-b to support reliable communications for wideband array operations (eg, in mmW systems).

[0088] The base station 105-b and the UE 115-b may be as shown in FIG. Figure 1 4. In the following description of process flow 500, operations between base station 105-b and UE 115-b may be transmitted in an order different from the example order shown, or operations performed by base station 105-b and UE 115-b may be performed in a different order or at a different time. Some operations may also be omitted from process flow 500, and other operations may be added to process flow 500.

[0089] At 505, the UE 115-b and the base station 105-b may identify a carrier bandwidth for transmitting broadband communications between the UE 115-b and the base station 105-b.

[0090] At 510, UE 115-b may optionally send to base station 105-b an indication of the ability of UE 115-b to transmit broadband communications with base station 105-b via a subband-based communication set with base station 105-b, the subband-based communication set being on a subband set spanning a carrier bandwidth. For example, UE 115-b may indicate an antenna configuration of UE 115-b, an antenna configuration associated with an element spacing of an antenna of UE 115-b, a phase set utilized by an antenna, one or more delay elements of an antenna, or a combination thereof. In another example, UE 115-b may indicate a subset of a subband set, the subset of the subband set representing a first UE preference for a subband to be used when communicating with base station 105-b, the subset of the subband set being based at least in part on a center frequency associated with an antenna of UE 115-b. For example, the subset of the subband set may be based on a center frequency of a frequency range used by UE 115-b. Additionally or alternatively, a subset of the set of subbands may be based on element spacing associated with antennas of UE 115-b. In another example, UE 115-b may indicate one or more frequencies associated with antennas of UE 115-b, send an indication of one or more bandwidths associated with antennas of UE 115-b, or both.

[0091] At 515, the base station 105-b may send a configuration to the UE 115-b for communicating with the base station 105-b in the carrier bandwidth using the subband set. In some cases, the configuration may be based on UE capabilities. Additionally, the configuration may be based on an intersection of a first subset of the subband set associated with an antenna of the UE 115-b and a second subset of the subband set associated with an antenna of the base station 105-b.

[0092] At 520, the base station 105-b and the UE 115-b may communicate in the carrier bandwidth using one or more subbands in the subband set according to the configuration. That is, the UE 115-b may receive one or more reference signals from the base station 105-b according to the configuration. In addition, the UE 115-b and the base station 105-b may transmit physical downlink control channel transmissions, physical downlink shared channel transmissions, or physical uplink shared channel transmissions according to the configuration.

[0093] Figure 6 A block diagram 600 of a device 605 supporting communication across a broadband using subbands according to aspects of the present disclosure is shown. The device 605 may be an example of aspects of a UE 115 as described herein. The device 605 may include a receiver 610, a UE encoding manager 615, and a transmitter 620. The device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0094] The receiver 610 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to communicating across a broadband using subbands, etc.). The information may be communicated to other components of the device 605. The receiver 610 may be a reference Fig. 9 Examples of various aspects of the transceiver 920 are described. The receiver 610 may utilize a single antenna or a group of antennas.

[0095] The UE encoding manager 615 may perform the following operations: identifying a carrier bandwidth for transmitting broadband communications with a base station; receiving a configuration from the base station for communicating with the base station in the carrier bandwidth using multiple subband-based communications on multiple subbands across the carrier bandwidth; and communicating with the base station in the carrier bandwidth using one or more subbands in the subband set according to the configuration. The UE encoding manager 615 may be an example of aspects of the UE encoding manager 910 described herein.

[0096] The actions performed by the UE encoding manager 615 as described herein may be implemented to achieve one or more potential advantages. For example, identifying a carrier bandwidth for transmitting broadband communications with a base station may allow the device 605 to more accurately estimate channel characteristics for each subband. Accurately estimating channel characteristics across a carrier bandwidth may improve transmission reliability for broadband array operations. In some examples, using multiple communication beams for communication may further potentially reduce power consumption by reducing the number of failed transmit and receive processes performed by the device 605.

[0097] The UE encoding manager 615 or its subcomponents may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the UE encoding manager 615 or its subcomponents may be performed by a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0098] The UE encoding manager 615 or its subcomponents may be physically located at various locations, including being distributed so that part of the functions are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the UE encoding manager 615 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the UE encoding manager 615 or its subcomponents may be combined with one or more other hardware components (including but not limited to input / output (I / O) components, transceivers, network servers, another computing device, one or more other components described in the present disclosure, or combinations thereof).

[0099] The transmitter 620 can transmit signals generated by other components of the device 605. In some examples, the transmitter 620 can be co-located with the receiver 610 in a transceiver module. For example, the transmitter 620 can be a reference Fig. 9 Examples of aspects of the transceiver 920 are described. The transmitter 620 may utilize a single antenna or a group of antennas.

[0100] Figure 7 A block diagram 700 of a device 705 supporting communication across a broadband using subbands according to aspects of the present disclosure is shown. The device 705 may be an example of aspects of the device 605 or UE 115 as described herein. The device 705 may include a receiver 710, a UE encoding manager 715, and a transmitter 735. The device 705 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0101] The receiver 710 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to communicating across a broadband using subbands, etc.). The information may be communicated to other components of the device 705. The receiver 710 may be a reference Fig. 9 Examples of various aspects of the transceiver 920 are described. The receiver 710 may utilize a single antenna or a group of antennas.

[0102] UE encoding manager 715 may be an example of aspects of UE encoding manager 615 as described herein. UE encoding manager 715 may include UE capability manager 720, configuration component 725, and communication manager 730. UE encoding manager 715 may be an example of aspects of UE encoding manager 910 as described herein.

[0103] UE capabilities manager 720 may identify a carrier bandwidth for communicating broadband communications with a base station.

[0104] Configuration component 725 can receive, from a base station, a configuration for communicating with the base station in a carrier bandwidth using multiple subband-based communications on multiple subbands across the carrier bandwidth.

[0105] The communication manager 730 may communicate with the base station in the carrier bandwidth using one or more subbands in the subband set according to the configuration.

[0106] The transmitter 735 can transmit signals generated by other components of the device 705. In some examples, the transmitter 735 can be co-located with the receiver 710 in a transceiver module. For example, the transmitter 735 can be a reference Fig. 9 Examples of various aspects of the transceiver 920 are described. The transmitter 735 may utilize a single antenna or a group of antennas.

[0107] Figure 8 A block diagram 800 of a UE encoding manager 805 supporting communication across a broadband using subbands according to aspects of the present disclosure is shown. The UE encoding manager 805 may be an example of aspects of the UE encoding manager 615, the UE encoding manager 715, or the UE encoding manager 910 described herein. The UE encoding manager 805 may include a UE capability manager 810, a configuration component 815, a communication manager 820, a base station capability manager 825, and a guard band manager 830. Each of these modules may communicate with each other directly or indirectly (e.g., via one or more buses).

[0108] The UE capability manager 810 may identify a carrier bandwidth for transmitting broadband communications with a base station. In some cases, the UE capability manager 810 may send an indication to the base station of the UE's ability to transmit broadband communications with the base station via a subband-based communication set with the base station. In some examples, the UE capability manager 810 may send an indication of the UE's antenna configuration, the antenna configuration being associated with an element spacing of an antenna of the UE, a phase set utilized by the antenna, one or more delay elements of the antenna, or a combination thereof. In some cases, the UE capability manager 810 may send an indication of a subset of a subband set, the subset of the subband set representing a first UE preference for a subband to be used when communicating with the base station, the subset of the subband set being based at least in part on at least one of a center frequency of a frequency range used by the UE or an element spacing associated with an antenna of the UE. In some cases, the UE capability manager 810 may send an indication of one or more frequencies associated with an antenna of the UE, send an indication of one or more bandwidths associated with an antenna of the UE, or both.

[0109] Configuration component 815 may receive, from a base station, a configuration for communicating with the base station in a carrier bandwidth using multiple subband-based communications on multiple subbands across the carrier bandwidth. In some examples, configuration component 815 may receive an indication of one or more resource blocks within a carrier bandwidth associated with a set of frequency resources, wherein identifying the set of frequency resources is based on the indication of the one or more resource blocks. In some cases, the configuration for communicating with the base station in the carrier bandwidth is based on an intersection of a first subset of a set of subbands associated with an antenna of the UE and a second subset of a set of subbands associated with an antenna of the base station.

[0110] The communication manager 820 may communicate with the base station in the carrier bandwidth using one or more subbands in the subband set according to the configuration.

[0111] In some examples, the communication manager 820 may receive a first reference signal through a first subband associated with a first identifier in a subband set. In some cases, the communication manager 820 may receive a second reference signal through a second subband different from the first subband in the subband set, and the second reference signal is associated with a second identifier different from the first identifier. In some examples, the communication manager 820 may perform a first channel estimation process for the first subband based on the first reference signal. In some cases, the communication manager 820 may perform a second channel estimation process for the second subband based on the second reference signal. In some cases, the first reference signal and the second reference signal are channel state information reference signals, sounding reference signals, tracking reference signals, phase tracking reference signals, or demodulation reference signals. In some cases, the first reference signal and the second reference signal are each associated with a third identifier indicating a carrier bandwidth.

[0112] In some examples, the communication manager 820 may identify a first transmission configuration indicator state and a second QCL reference information associated with a first subband based on a first identifier. In some cases, the communication manager 820 may identify a second transmission configuration indicator state and a second QCL reference information associated with a second subband based on a second identifier. In some cases, the communication manager 820 may send radio resource management measurements associated with a single subband in a subband set, a set of subbands in a subband set, or a set of subbands to a base station and in accordance with a configuration. In some examples, the communication manager 820 may send channel state information associated with a single subband in a subband set, a set of subbands in a subband set, or a set of subbands to a base station and in accordance with a configuration.

[0113] In some examples, the communication manager 820 may receive a physical downlink control channel message on at least one subband, the physical downlink control channel message scheduling one or more transmissions across a single subband, a subset of a subband set, or each subband in a subband set. In some cases, the communication manager 820 may receive a downlink shared channel transmission including a set of transport blocks, wherein each transport block is received using one of the subbands in the subband set. In some cases, each transport block in the transport block set is associated with a modulation and coding scheme and rank based on the subband for receiving each transport block. In some cases, the communication manager 820 may receive a downlink shared channel transmission using two or more subbands, the downlink shared channel transmission including a single transport block across two or more subbands. In some examples, a single transport block includes two or more carrier block groups, each carrier block group being associated with one of the two or more subbands. In some examples, the communication manager 820 may send a feedback message indicating whether the decoding of a downlink message across more than one subband is successful. In some cases, each carrier block group is associated with a modulation and coding scheme.

[0114] The base station capabilities manager 825 may receive, from the base station, an indication of an antenna configuration for the base station, the antenna configuration being associated with one or more of: element spacing of an antenna of the base station, a phase set utilized by the antenna, or one or more delay elements of the antenna, wherein receiving a configuration for communicating with the base station in the carrier bandwidth is based on receiving the indication of the antenna configuration for the base station.

[0115] The guard band manager 830 may identify a set of frequency resources between a first subband in the set of subbands and a second subband in the set of subbands within the carrier bandwidth based on the received configuration. In some examples, the guard band manager 830 may avoid sending or receiving communications with the base station over the set of frequency resources based on the identification.

[0116] Fig. 9 A schematic diagram of a system 900 including a device 905 supporting communication across a broadband using sub-bands according to various aspects of the present disclosure is shown. The device 905 may be an example of a device 605, a device 705, or a UE 115 as described herein or include a component of the device 605, the device 705, or the UE 115. The device 905 may include components for two-way voice and data communications, including components for sending and receiving communications, including a UE encoding manager 910, an I / O controller 915, a transceiver 920, an antenna 925, a memory 930, and a processor 940. These components may communicate electronically via one or more buses (e.g., a bus 945).

[0117] The UE coding manager 910 may perform the following operations: identifying a carrier bandwidth for transmitting broadband communications with a base station; receiving a configuration from the base station for communicating with the base station in the carrier bandwidth using multiple subband-based communications on multiple subbands spanning the carrier bandwidth; and communicating with the base station in the carrier bandwidth using one or more subbands in a subband set according to the configuration.

[0118] I / O controller 915 can manage input and output signals for device 905. I / O controller 915 can also manage peripheral devices that are not integrated into device 905. In some cases, I / O controller 915 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 915 can utilize a computer such as a , or another known operating system. In other cases, I / O controller 915 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 915 may be implemented as part of a processor. In some cases, a user may interact with device 905 via I / O controller 915 or via hardware components controlled by I / O controller 915.

[0119] The transceiver 920 may communicate bidirectionally via one or more antennas, wired or wireless links as described above. For example, the transceiver 920 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 920 may also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and demodulating packets received from an antenna.

[0120] In some cases, a wireless device may include a single antenna 925. However, in some cases, the device may have more than one antenna 925, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0121] The memory 930 may include random access memory (RAM) and read-only memory (ROM). The memory 930 may store computer-readable, computer-executable code 935, which includes instructions that, when executed, cause the processor to perform various functions described herein. In some cases, the memory 930 may also contain, among other things, a basic input / output system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0122] The processor 940 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, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 940 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks that support communication across a broadband using a sub-band).

[0123] The code 935 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 935 may be stored in a non-transitory computer-readable medium (such as a system memory or other type of memory). In some cases, the code 935 may not be directly executable by the processor 940, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0124] Fig.10 A block diagram 1000 of a device 1005 supporting communication across a broadband using sub-bands according to aspects of the present disclosure is shown. The device 1005 may be an example of aspects of a base station 105 as described herein. The device 1005 may include a receiver 1010, a communication manager 1015, and a transmitter 1020. The device 1005 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0125] The receiver 1010 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to communicating across a broadband using subbands, etc.). The information may be communicated to other components of the device 1005. The receiver 1010 may be a reference Fig.13 Examples of various aspects of the transceiver 1320 are described. The receiver 1010 may utilize a single antenna or a group of antennas.

[0126] The communication manager 1015 may perform the following operations: identifying a carrier bandwidth for transmitting broadband communications with a UE; sending a configuration to the UE for communicating with a base station in the carrier bandwidth using multiple subband-based communications on multiple subbands across the carrier bandwidth; and communicating with the UE in the carrier bandwidth using one or more subbands in the subband set according to the configuration. The communication manager 1015 may be an example of various aspects of the communication manager 1310 described herein.

[0127] The communication manager 1015 or its subcomponents may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 1015 or its subcomponents may be performed by a general purpose processor, a DSP, an application specific integrated circuit (ASIC), 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 in the present disclosure.

[0128] The communication manager 1015 or its subcomponents may be physically located at various locations, including being distributed so that portions of the functions are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents may be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0129] The transmitter 1020 can transmit signals generated by other components of the device 1005. In some examples, the transmitter 1020 can be co-located with the receiver 1010 in a transceiver module. For example, the transmitter 1020 can be a reference Fig.13 Examples of various aspects of the transceiver 1320 are described. The transmitter 1020 may utilize a single antenna or a group of antennas.

[0130] Fig.11 A block diagram 1100 of a device 1105 supporting communication across a broadband using sub-bands according to aspects of the present disclosure is shown. The device 1105 may be an example of aspects of the device 1005 or base station 105 as described herein. The device 1105 may include a receiver 1110, a communication manager 1115, and a transmitter 1135. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0131] The receiver 1110 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to communicating across a broadband using subbands, etc.). The information may be communicated to other components of the device 1105. The receiver 1110 may be a reference Fig.13 Examples of various aspects of the transceiver 1320 are described. The receiver 1110 may utilize a single antenna or a group of antennas.

[0132] Communications manager 1115 may be an example of aspects of communications manager 1015 as described herein. Communications manager 1115 may include UE capability indication component 1120, configuration manager 1125, and carrier communications manager 1130. Communications manager 1115 may be an example of aspects of communications manager 1310 as described herein.

[0133] UE capability indicating component 1120 can identify a carrier bandwidth for communicating wideband communications with the UE.

[0134] The configuration manager 1125 may send a configuration to the UE for communicating with a base station in a carrier bandwidth using multiple subband-based communications on multiple subbands across the carrier bandwidth.

[0135] The carrier communication manager 1130 may communicate with the UE in the carrier bandwidth using one or more subbands in the subband set according to the configuration.

[0136] The transmitter 1135 may transmit signals generated by other components of the device 1105. In some examples, the transmitter 1135 may be co-located with the receiver 1110 in a transceiver module. For example, the transmitter 1135 may be a reference Fig.13 Examples of various aspects of the transceiver 1320 are described. The transmitter 1135 may utilize a single antenna or a group of antennas.

[0137] Fig.12 A block diagram 1200 of a communication manager 1205 supporting communication across a broadband using sub-bands according to aspects of the present disclosure is shown. The communication manager 1205 can be an example of aspects of the communication manager 1015, the communication manager 1115, or the communication manager 1310 described herein. The communication manager 1205 can include a UE capability indication component 1210, a configuration manager 1215, a carrier communication manager 1220, a base station capability manager 1225, and a guard band manager 1230. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0138] The UE capability indication component 1210 may identify a carrier bandwidth for transmitting broadband communications with the UE. In some cases, the UE capability indication component 1210 may receive from the UE an indication of the UE's ability to transmit broadband communications with the base station via multiple subband-based communications with the base station. In some examples, the UE capability indication component 1210 may receive an indication of the UE's antenna configuration, the antenna configuration being associated with the element spacing of the UE's antenna, the phase set utilized by the antenna, one or more delay elements of the antenna, or a combination thereof. In some cases, the UE capability indication component 1210 may receive an indication of a subset of a subband set, the subset of the subband set representing a first UE preference for a subband to be used when communicating with the base station, the subset of the subband set being based at least in part on at least one of a center frequency of a frequency range used by the UE or an element spacing associated with the UE's antenna. In some cases, the UE capability indication component 1210 may receive an indication of one or more frequencies associated with the UE's antenna, send an indication of one or more bandwidths associated with the UE's antenna, or both.

[0139] The configuration manager 1215 may send a configuration to the UE for communicating with the base station in the carrier bandwidth using multiple subband-based communications on multiple subbands across the carrier bandwidth. In some examples, the configuration manager 1215 may send an indication of one or more resource blocks associated with a set of frequency resources within the carrier bandwidth, wherein identifying the set of frequency resources is based on the indication of the one or more resource blocks. In some cases, the configuration for communicating with the base station in the carrier bandwidth is based on an intersection of a first subset of the set of subbands associated with an antenna of the UE and a second subset of the set of subbands associated with an antenna of the base station.

[0140] The carrier communication manager 1220 may communicate with the UE in the carrier bandwidth using one or more subbands in the subband set according to the configuration. In some examples, the carrier communication manager 1220 may send a first reference signal through a first subband in the subband set associated with a first identifier. In some cases, the carrier communication manager 1220 may send a second reference signal through a second subband in the subband set that is different from the first subband, and the second reference signal is associated with a second identifier that is different from the first identifier. In some cases, the first reference signal and the second reference signal are channel state information reference signals, sounding reference signals, tracking reference signals, phase tracking reference signals, or demodulation reference signals. In some cases, the first reference signal and the second reference signal are each associated with a third identifier indicating the carrier bandwidth.

[0141] In some examples, the carrier communication manager 1220 may receive, from the UE and according to the configuration, radio resource management measurements associated with a single subband in a set of subbands, a set of subbands in a set of subbands, or a set of subbands. In some cases, the carrier communication manager 1220 may receive, from the UE and according to the configuration, channel state information associated with a single subband in a set of subbands, a set of subbands in a set of subbands, or a set of subbands.

[0142] In some cases, the carrier communication manager 1220 may send a physical downlink control channel message on at least one subband, the physical downlink control channel message scheduling one or more transmissions across a single subband, a subset of a subband set, or each subband in a subband set. In some examples, the carrier communication manager 1220 may send a downlink shared channel transmission including a set of transport blocks, wherein each transport block is sent using one of the subbands in the subband set. In some cases, each transport block in the transport block set is associated with a modulation and coding scheme and rank based on the subband used to receive each transport block. In some cases, the carrier communication manager 1220 may send a downlink shared channel transmission using two or more subbands, the downlink shared channel transmission including a single transport block across two or more subbands. In some examples, a single transport block includes two or more carrier block groups, each carrier block group being associated with one of the two or more subbands. In some cases, each carrier block group is associated with a modulation and coding scheme.

[0143] In some examples, carrier communication manager 1220 may receive a feedback message indicating whether decoding of a downlink message spanning more than one subband was successful.

[0144] The base station capabilities manager 1225 may send an indication of an antenna configuration of the base station to the UE, the antenna configuration being associated with one or more of: an element spacing of an antenna of the base station, a phase set utilized by the antenna, or one or more delay elements of the antenna, wherein receiving a configuration for communicating with the base station in a carrier bandwidth is based on receiving the indication of the antenna configuration of the base station.

[0145] Guard band manager 1230 may identify a set of frequency resources between a first subband in a set of subbands and a second subband in a set of subbands within a carrier bandwidth based on the configuration. In some examples, guard band manager 1230 may avoid sending or receiving communications with a UE over the set of frequency resources based on the identification.

[0146] Fig.13A schematic diagram of a system 1300 including a device 1305 supporting communication across a broadband using sub-bands according to various aspects of the present disclosure is shown. The device 1305 may be an example of or include a component of a device 1005, a device 1105, or a base station 105 as described herein. The device 1305 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 1310, a network communication manager 1315, a transceiver 1320, an antenna 1325, a memory 1330, a processor 1340, and an inter-station communication manager 1345. These components may communicate electronically via one or more buses (e.g., a bus 1350).

[0147] The communication manager 1310 can perform the following operations: identify a carrier bandwidth for transmitting broadband communications with a UE; send a configuration to the UE for communicating with a base station in the carrier bandwidth using multiple subband-based communications on multiple subbands spanning the carrier bandwidth; and communicate with the UE in the carrier bandwidth using one or more subbands in a subband set according to the configuration.

[0148] The network communications manager 1315 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1315 may manage the transmission of data communications for client devices, such as one or more UEs 115.

[0149] The transceiver 1320 may communicate bidirectionally via one or more antennas, wired or wireless links as described above. For example, the transceiver 1320 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1320 may also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and demodulating packets received from an antenna.

[0150] In some cases, a wireless device may include a single antenna 1325. However, in some cases, the device may have more than one antenna 1325, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0151] Memory 1330 may include RAM, ROM, or a combination thereof. Memory 1330 may store computer readable code 1335, which includes instructions that, when executed by a processor (e.g., processor 1340), cause the device to perform various functions described herein. In some cases, memory 1330 may also contain, among other things, BIOS, which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0152] Processor 1340 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, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1340 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into processor 1340. Processor 1340 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1330) to cause device 1305 to perform various functions (e.g., functions or tasks that support communication across a broadband using a sub-band).

[0153] The inter-site communication manager 1345 can manage communications with other base stations 105 and can include a controller or scheduler for controlling communications with UE 115 in cooperation with other base stations 105. For example, the inter-site communication manager 1345 can coordinate scheduling of transmissions to UE 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-site communication manager 1345 can provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0154] The code 1335 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1335 may be stored in a non-transitory computer-readable medium such as a system memory or other type of memory. In some cases, the code 1335 may not be directly executable by the processor 1340, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0155] Fig.14 A flow chart illustrating a method 1400 for supporting communication across a broadband using subbands according to aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1400 may be implemented by a UE 115 or a component thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0156] At 1405, the UE may identify a carrier bandwidth for transmitting broadband communications with a base station. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be performed as described with reference to Figures 6 to 9 The UE capability manager described in this document is used to perform the above operations.

[0157] At 1410, the UE may receive from the base station a configuration for communicating with the base station in a carrier bandwidth using a subband-based communication set on a subband set across the carrier bandwidth. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be performed as described with reference to Figures 6 to 9 Describes the configuration components to execute.

[0158] At 1415, the UE may communicate with the base station in the carrier bandwidth using one or more subbands in the subband set according to the configuration. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be as described with reference to Figures 6 to 9 The communication manager described here is used to perform the

[0159] Fig.15 A flow chart illustrating a method 1500 for supporting communication across a broadband using subbands according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE 115 or a component thereof as described with reference to Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0160] At 1505, the UE may identify a carrier bandwidth for transmitting broadband communications with a base station. The operations of 1505 may be performed according to methods described herein. In some examples, aspects of the operations of 1505 may be described with reference to Figures 6 to 9 The UE capability manager described in this document is used to perform the above operations.

[0161] At 1510, the UE may send an indication to the base station of the UE's ability to transmit broadband communications with the base station via multiple subband-based communications with the base station. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be performed as described with reference to Figures 6 to 9 The UE capability manager described in this document is used to perform the above operations.

[0162] At 1515, the UE may receive, from the base station and based on the capabilities of the UE, a configuration for communicating with the base station in the carrier bandwidth using multiple subband-based communications on multiple subbands across the carrier bandwidth. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be performed as described with reference to Figures 6 to 9 Describes the configuration components to execute.

[0163] At 1520, the UE may communicate with the base station in the carrier bandwidth using one or more subbands in the subband set according to the configuration. The operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be as described with reference to Figures 6 to 9 The communication manager described here is used to perform the

[0164] Fig.16 A flow chart illustrating a method 1600 for supporting communication across a broadband using subbands according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 1600 may be implemented by a base station 105 or components thereof as described herein. Figures 10 to 13 In some examples, the base station may execute an instruction set to control the functional units of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0165] At 1605, the base station may identify a carrier bandwidth for transmitting broadband communications with the UE. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be performed as described with reference to Figures 10 to 13 The UE capability described indicates the components to be performed.

[0166] At 1610, the base station may send a configuration to the UE for communicating with the base station in a carrier bandwidth using multiple subband-based communications on multiple subbands across the carrier bandwidth. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed as described with reference to Figures 10 to 13 Describes the configuration manager to perform.

[0167] At 1615, the base station may communicate with the UE in the carrier bandwidth using one or more subbands in the subband set according to the configuration. The operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be as described with reference to Figures 10 to 13 The carrier communication manager described here is used to perform the above operations.

[0168] Fig.17 A flow chart illustrating a method 1700 for supporting communication across a broadband using subbands according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 1700 may be implemented by a base station 105 or components thereof as described herein. Figures 10 to 13 In some examples, the base station may execute an instruction set to control the functional units of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0169] At 1705, the base station may identify a carrier bandwidth for transmitting broadband communications with the UE. The operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be performed as described with reference to Figures 10 to 13 The UE capability described indicates the components to be performed.

[0170] At 1710, the base station may receive from the UE an indication of the UE's ability to communicate broadband communications with the base station via multiple subband-based communications with the base station. The operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be performed as described with reference to Figures 10 to 13 The UE capability manager described in this document is used to perform the above operations.

[0171] At 1715, the base station may send to the UE and based on the capabilities of the UE a configuration for communicating with the base station in the carrier bandwidth using multiple subband-based communications on multiple subbands across the carrier bandwidth. The operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be performed as described with reference to Figures 10 to 13 Describes the configuration manager to perform.

[0172] At 1720, the base station may communicate with the UE in the carrier bandwidth using one or more subbands in the subband set according to the configuration. The operations of 1720 may be performed according to the methods described herein. In some examples, aspects of the operations of 1720 may be as described with reference to Figures 10 to 13 The carrier communication manager described here is used to perform the above operations.

[0173] The following provides a summary of various aspects of the present disclosure:

[0174] Aspect 1: A method for wireless communication at a UE, comprising: identifying a carrier bandwidth for transmitting broadband communications with a base station; receiving a configuration from the base station for communicating with the base station in the carrier bandwidth using multiple subband-based communications on multiple subbands spanning the carrier bandwidth; and communicating with the base station in the carrier bandwidth using one or more of the multiple subbands according to the configuration.

[0175] Aspect 2: The method according to aspect 1 further includes: sending an indication to the base station of the ability of the UE to transmit the broadband communication with the base station via the plurality of subband-based communications with the base station.

[0176] Aspect 3: A method according to Aspect 2, wherein sending the indication of the capability of the UE includes: sending an indication of the antenna configuration of the UE, the antenna configuration being associated with the element spacing of the antenna of the UE, the phase set utilized by the antenna, one or more delay elements of the antenna, or a combination thereof.

[0177] Aspect 4: A method according to any one of Aspects 2 to 3, wherein sending the indication of the capability of the UE includes: sending an indication of a subset of the multiple subbands, the subset of the multiple subbands representing a first UE preference for subbands to be used when communicating with the base station, and the subset of the multiple subbands is at least partially based on at least one of the center frequency of the frequency range used by the UE or the element spacing associated with the antenna of the UE.

[0178] Aspect 5: A method according to any one of Aspects 2 to 4, wherein sending the indication of the capability of the UE includes: sending an indication of one or more frequencies associated with the antenna of the UE, sending an indication of one or more bandwidths associated with the antenna of the UE, or both.

[0179] Aspect 6: A method according to any one of Aspects 1 to 5, wherein the configuration for communicating with the base station in the carrier bandwidth is at least partially based on the intersection of a first subset of the multiple subbands associated with the antenna of the UE and a second subset of the multiple subbands associated with the antenna of the base station.

[0180] Aspect 7: The method according to any one of Aspects 1 to 6 further includes: receiving an indication of an antenna configuration of the base station from the base station, the antenna configuration being associated with one or more of: an element spacing of the antenna of the base station, a phase set utilized by the antenna, or one or more delay elements of the antenna, wherein receiving the configuration for communicating with the base station in the carrier bandwidth is at least partially based on receiving the indication of the antenna configuration of the base station.

[0181] Aspect 8: The method according to any one of Aspects 1 to 7 further includes: identifying a frequency resource set between a first subband among the multiple subbands and a second subband among the multiple subbands within the carrier bandwidth based at least in part on receiving the configuration; and avoiding sending or receiving communications with the base station through the frequency resource set based at least in part on the identification.

[0182] Aspect 9: A method according to Aspect 8, wherein receiving the configuration for communicating with the base station in the carrier bandwidth includes: receiving an indication of one or more resource blocks associated with the frequency resource set within the carrier bandwidth, wherein identifying the frequency resource set is at least partially based on the indication of one or more resource blocks.

[0183] Aspect 10: A method according to any one of Aspects 1 to 9, wherein communicating with the base station includes: receiving a first reference signal through a first subband associated with a first identifier among the multiple subbands; and receiving a second reference signal through a second subband different from the first subband among the multiple subbands, the second reference signal being associated with a second identifier different from the first identifier.

[0184] Aspect 11: The method according to Aspect 10 also includes: performing a first channel estimation process for the first subband based at least in part on the first reference signal; and performing a second channel estimation process for the second subband based at least in part on the second reference signal.

[0185] Aspect 12: The method according to any one of Aspects 10 to 11 further includes: identifying a first transmission configuration indicator state and a second quasi-co-location reference information associated with the first subband based at least in part on the first identifier; and identifying a second transmission configuration indicator state and a second quasi-co-location reference information associated with the second subband based at least in part on the second identifier.

[0186] Aspect 13: The method according to any one of Aspects 10 to 12, wherein the first reference signal and the second reference signal are channel state information reference signals, sounding reference signals, tracking reference signals, phase tracking reference signals, or demodulation reference signals.

[0187] Aspect 14: The method according to any one of Aspects 10 to 13, wherein the first reference signal and the second reference signal are each associated with a third identifier indicating the carrier bandwidth.

[0188] Aspect 15: A method according to any one of Aspects 1 to 14, wherein communicating with the base station in the carrier bandwidth includes: sending radio resource management measurements associated with a single subband among the multiple subbands, a set of subbands among the multiple subbands, or the multiple subbands to the base station and according to the configuration.

[0189] Aspect 16: A method according to any one of Aspects 1 to 15, wherein communicating with the base station in the carrier bandwidth includes: sending channel state information associated with a single subband among the multiple subbands, a set of subbands among the multiple subbands, or the multiple subbands to the base station and according to the configuration.

[0190] Aspect 17: A method according to any one of Aspects 1 to 16, wherein communicating with the base station in the carrier bandwidth includes: receiving a physical downlink control channel message on at least one subband, the physical downlink control channel message scheduling one or more transmissions across a single subband, a subset of the multiple subbands, or each subband of the multiple subbands.

[0191] Aspect 18: A method according to any one of Aspects 1 to 17, wherein communicating with the base station in the carrier bandwidth includes: receiving a downlink shared channel transmission comprising a set of transport blocks, wherein each transport block is received using one of the multiple subbands.

[0192] Aspect 19: The method of aspect 18, wherein each transport block in the set of transport blocks is associated with a modulation and coding scheme and a rank based at least in part on a subband used to receive each transport block.

[0193] Aspect 20: A method according to any one of Aspects 1 to 19, wherein communicating with the base station in the carrier bandwidth includes: using two or more sub-bands to receive downlink shared channel transmissions, wherein the downlink shared channel transmissions include a single transmission block spanning two or more sub-bands.

[0194] Aspect 21: A method according to Aspect 20, wherein the single transport block comprises two or more carrier block groups, each carrier block group is associated with one of the two or more subbands; and each carrier block group is associated with a modulation and coding scheme.

[0195] Aspect 22: The method according to any one of aspects 1 to 21, wherein communicating with the base station comprises: sending a feedback message indicating whether decoding of a downlink message spanning more than one subband is successful.

[0196] Aspect 23: A method for wireless communication at a base station, comprising: identifying a carrier bandwidth for transmitting broadband communications with a UE; sending a configuration to the UE for communicating with the base station in the carrier bandwidth using multiple subband-based communications on multiple subbands spanning the carrier bandwidth; and communicating with the UE in the carrier bandwidth using one or more of the multiple subbands according to the configuration.

[0197] Aspect 24: The method according to aspect 23 further includes: receiving, from the UE, an indication of the ability of the UE to transmit the broadband communication with the base station via the plurality of subband-based communications with the base station.

[0198] Aspect 25: A method according to Aspect 24, wherein receiving the indication of the capability of the UE includes: receiving an indication of the antenna configuration of the UE, the antenna configuration being associated with the element spacing of the antenna of the UE, the phase set utilized by the antenna, one or more delay elements of the antenna, or a combination thereof.

[0199] Aspect 26: A method according to any one of Aspects 24 to 25, wherein receiving the indication of the capability of the UE includes: receiving an indication of a subset of the multiple subbands, the subset of the multiple subbands representing a first UE preference for subbands to be used when communicating with the base station, and the subset of the multiple subbands is at least partially based on one of the center frequency of the frequency range used by the UE or the element spacing associated with the antenna of the UE.

[0200] Aspect 27: A method according to any one of Aspects 24 to 26, wherein receiving the indication of the capability of the UE includes: receiving an indication of one or more frequencies associated with the antenna of the UE, sending an indication of one or more bandwidths associated with the antenna of the UE, or both.

[0201] Aspect 28: A method according to any one of Aspects 23 to 27, wherein the configuration for communicating with the base station in the carrier bandwidth is at least partially based on the intersection of a first subset of the multiple subbands associated with the antenna of the UE and a second subset of the multiple subbands associated with the antenna of the base station.

[0202] Aspect 29: The method according to any one of Aspects 23 to 28 further includes: sending an indication of the antenna configuration of the base station to the UE, the antenna configuration being associated with one or more of: the element spacing of the antenna of the base station, the phase set utilized by the antenna, or one or more delay elements of the antenna, wherein receiving the configuration for communicating with the base station in the carrier bandwidth is at least partially based on receiving the indication of the antenna configuration of the base station.

[0203] Aspect 30: The method according to any one of Aspects 23 to 29 further includes: identifying a frequency resource set between a first subband among the multiple subbands and a second subband among the multiple subbands within the carrier bandwidth based at least in part on the configuration; and avoiding sending or receiving communications with the UE through the frequency resource set based at least in part on the identification.

[0204] Aspect 31: A method according to Aspect 30, wherein sending the configuration for communicating with the base station in the carrier bandwidth also includes: sending an indication of one or more resource blocks associated with the frequency resource set within the carrier bandwidth, wherein identifying the frequency resource set is at least partially based on the indication of one or more resource blocks.

[0205] Aspect 32: A method according to any one of Aspects 23 to 31, wherein communicating with the UE further includes: sending a first reference signal through a first subband associated with a first identifier among the multiple subbands; and sending a second reference signal through a second subband different from the first subband among the multiple subbands, wherein the second reference signal is associated with a second identifier different from the first identifier.

[0206] Aspect 33: The method according to Aspect 32, wherein the first reference signal and the second reference signal are channel state information reference signals, sounding reference signals, tracking reference signals, phase tracking reference signals, or demodulation reference signals.

[0207] Aspect 34: The method according to any one of Aspects 32 to 33, wherein the first reference signal and the second reference signal are each associated with a third identifier indicating the carrier bandwidth.

[0208] Aspect 35: A method according to any one of Aspects 23 to 34, wherein communicating with the UE in the carrier bandwidth includes: receiving radio resource management measurements associated with a single subband among the multiple subbands, a set of subbands among the multiple subbands, or the multiple subbands from the UE and according to the configuration.

[0209] Aspect 36: A method according to any one of Aspects 23 to 35, wherein communicating with the UE in the carrier bandwidth includes: receiving channel state information associated with a single subband among the multiple subbands, a set of subbands among the multiple subbands, or the multiple subbands from the UE and according to the configuration.

[0210] Aspect 37: A method according to any one of Aspects 23 to 36, wherein communicating with the UE in the carrier bandwidth includes: sending a physical downlink control channel message on at least one subband, and the physical downlink control channel message schedules one or more transmissions across a single subband, a subset of the multiple subbands, or each subband of the multiple subbands.

[0211] Aspect 38: A method according to any one of Aspects 23 to 37, wherein communicating with the UE in the carrier bandwidth includes: sending a downlink shared channel transmission comprising a set of transport blocks, wherein each transport block is sent using one of the multiple subbands.

[0212] Aspect 39: The method of aspect 38, wherein each transport block in the set of transport blocks is associated with a modulation and coding scheme and a rank based at least in part on a subband used to receive each transport block.

[0213] Aspect 40: A method according to any one of Aspects 23 to 39, wherein communicating with the UE in the carrier bandwidth includes: using two or more sub-bands to send a downlink shared channel transmission, and the downlink shared channel transmission includes a single transmission block spanning two or more sub-bands.

[0214] Aspect 41: A method according to aspect 40, wherein the single transport block comprises two or more carrier block groups, each carrier block group is associated with one of the two or more subbands; and each carrier block group is associated with a modulation and coding scheme.

[0215] Aspect 42: A method according to any one of Aspects 23 to 41, wherein communicating with the UE in the carrier bandwidth includes: receiving a feedback message indicating whether decoding of a downlink message spanning more than one subband is successful.

[0216] Aspect 43: A method for wireless communication at a UE, comprising: a unit for identifying a carrier bandwidth for transmitting broadband communications with a base station; a unit for receiving a configuration from the base station for communicating with the base station in the carrier bandwidth using multiple subband-based communications on multiple subbands spanning the carrier bandwidth; and a unit for communicating with the base station in the carrier bandwidth using one or more of the multiple subbands according to the configuration.

[0217] Aspect 44: A method for wireless communication at a base station, comprising: a unit for identifying a carrier bandwidth for transmitting broadband communications with a UE; a unit for sending a configuration to the UE for communicating with the base station in the carrier bandwidth using multiple subband-based communications on multiple subbands spanning the carrier bandwidth; and a unit for communicating with the UE in the carrier bandwidth using one or more of the multiple subbands according to the configuration.

[0218] Aspect 45: A method for wireless communication at a UE, comprising: identifying a carrier bandwidth for transmitting broadband communications with a base station; receiving a configuration from the base station for communicating with the base station in the carrier bandwidth using multiple subband-based communications on multiple subbands spanning the carrier bandwidth; and communicating with the base station in the carrier bandwidth using one or more of the multiple subbands according to the configuration.

[0219] Aspect 46: A method for wireless communication at a base station, comprising: identifying a carrier bandwidth for transmitting broadband communications with a UE; sending a configuration to the UE for communicating with the base station in the carrier bandwidth using multiple subband-based communications on multiple subbands spanning the carrier bandwidth; and communicating with the UE in the carrier bandwidth using one or more of the multiple subbands according to the configuration.

[0220] Aspect 47: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 1 to 22.

[0221] Aspect 48: An apparatus for wireless communication at a UE, comprising at least one unit for performing the method according to any one of aspects 1 to 22.

[0222] Aspect 49: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 22.

[0223] Aspect 50: An apparatus for wireless communication at a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 23 to 42.

[0224] Aspect 51: An apparatus for wireless communication at a base station, comprising at least one unit for performing the method according to any one of aspects 23 to 42.

[0225] Aspect 52: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to perform the method according to any one of aspects 23 to 42.

[0226] Aspect 53: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 43 to 43.

[0227] Aspect 54: An apparatus for wireless communication at a UE, comprising at least one unit for performing the method according to any one of aspects 43 to 43.

[0228] Aspect 55: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 43 to 43.

[0229] Aspect 56: An apparatus for wireless communication at a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 44 to 44.

[0230] Aspect 57: An apparatus for wireless communication at a base station, comprising at least one unit for performing the method according to any one of aspects 44 to 44.

[0231] Aspect 58: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to perform the method according to any one of aspects 44 to 44.

[0232] Aspect 59: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 45 to 45.

[0233] Aspect 60: An apparatus for wireless communication at a UE, comprising at least one unit for performing the method according to any one of aspects 45 to 45.

[0234] Aspect 61: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 45 to 45.

[0235] Aspect 62: An apparatus for wireless communication at a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 46 to 46.

[0236] Aspect 63: An apparatus for wireless communication at a base station, comprising at least one unit for performing the method according to any one of aspects 46 to 46.

[0237] Aspect 64: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to perform the method according to any one of aspects 46 to 46.

[0238] It should be noted that the methods described herein describe possible implementations, and that the operations and steps may be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0239] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. 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.

[0240] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0241] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed using a general purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration).

[0242] 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 sent through a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented in software executed by a processor, hardware, firmware, hard wiring, or any combination of these. Features that implement the functions may also be physically located at various locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0243] Computer readable medium includes both non-transitory computer storage medium and communication medium, and communication medium includes any medium that promotes the transmission of computer program from one place to another place.Non-transitory storage medium can be any available medium that can be accessed by general-purpose computer or special-purpose computer.By way of example and not limitation, non-transitory computer readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage device, or can be used for carrying or storing desired program code unit and any other non-transitory medium that can be accessed by general-purpose or special-purpose computer or general-purpose or special-purpose processor in the form of instruction or data structure.As used herein, disk and optical disc include CD, laser optical disc, optical disc, digital versatile disc (DVD), floppy disk and blue-ray disc, wherein, disk usually magnetically copies data, and optical disc uses laser to optically copy data.The combination of the above is also included in the scope of computer readable medium.

[0244] As used herein (including in the claims), "or" as used in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A, or B, or C, or AB, or AC, or BC, or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0245] In the accompanying drawings, similar components or features may have the same reference numeral. In addition, various components of the same type may be distinguished by following the reference numeral with a dash and a second reference numeral, the second reference numeral being used to distinguish between similar components. If only the first reference numeral is used in the specification, the description applies to any of the similar components having the same first reference numeral, without regard to the second reference numeral or other subsequent reference numerals.

[0246] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations, and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "advantageous over other examples." For the purpose of providing an understanding of the described techniques, the detailed description includes specific details. However, these techniques may be implemented without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0247] To enable those of ordinary skill in the art to implement or use the present disclosure, the description herein is provided. Various modifications to the present disclosure will be apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is given the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment UE, comprising: identifying a carrier bandwidth for communicating broadband communications with a base station; transmitting control information indicating the ability of the UE to communicate the broadband communication with the base station over a plurality of subbands spanning the carrier bandwidth, wherein the control information identifies one or more of the plurality of subbands that the UE prefers to use when communicating with the base station, wherein the one or more of the plurality of subbands are based at least in part on at least one of a center frequency of a frequency range used by the UE or an element spacing associated with an antenna of the UE; receiving, from the base station, a configuration for communicating with the base station in the carrier bandwidth using a plurality of subband-based communications on the plurality of subbands spanning the carrier bandwidth; and One or more of the plurality of subbands are used to communicate with the base station in the carrier bandwidth according to the configuration.

2. The method according to claim 1, wherein: Sending the control information indicating the capability of the UE includes: An indication of an antenna configuration for the UE is sent, the antenna configuration being associated with the element spacing of the antenna of the UE, a set of phases utilized by the antenna, one or more delay elements of the antenna, or a combination thereof.

3. The method according to claim 1, wherein: Sending the control information indicating the capability of the UE includes: An indication of one or more frequencies associated with the antennas of the UE is sent, an indication of one or more bandwidths associated with the antennas of the UE is sent, or both.

4. The method according to claim 1, wherein: The configuration for communicating with the base station in the carrier bandwidth is based at least in part on an intersection of a first subset of the plurality of subbands associated with the antenna of the UE and a second subset of the plurality of subbands associated with an antenna of the base station.

5. The method according to claim 1, further comprising: Receiving from the base station an indication of an antenna configuration of the base station, the antenna configuration being associated with one or more of: element spacing of an antenna of the base station, a phase set utilized by the antenna, or one or more delay elements of the antenna, wherein receiving the configuration for communicating with the base station in the carrier bandwidth is based at least in part on receiving the indication of the antenna configuration of the base station.

6. The method according to claim 1, further comprising: Based at least in part on receiving the configuration, identifying a set of frequency resources within the carrier bandwidth between a first subband in the plurality of subbands and a second subband in the plurality of subbands; and Communications with the base station are refrained from being sent or received over the set of frequency resources based at least in part on the identifying.

7. The method according to claim 6, wherein: Receiving the configuration for communicating with the base station in the carrier bandwidth includes: An indication of one or more resource blocks associated with the set of frequency resources within the carrier bandwidth is received, wherein identifying the set of frequency resources is based at least in part on the indication of the one or more resource blocks.

8. The method according to claim 1, wherein: Communicating with the base station includes: receiving a first reference signal via a first subband associated with a first identifier among the plurality of subbands; and A second reference signal is received via a second subband different from the first subband of the plurality of subbands, the second reference signal being associated with a second identifier different from the first identifier.

9. The method according to claim 8, further comprising: performing a first channel estimation process for the first subband based at least in part on the first reference signal; as well as A second channel estimation process is performed for the second subband based at least in part on the second reference signal.

10. The method according to claim 8, further comprising: identifying, based at least in part on the first identifier, a first transmission configuration indicator state and first quasi-co-site reference information associated with the first subband; as well as A second transmission configuration indicator state and second quasi co-located reference information associated with the second subband are identified based at least in part on the second identifier.

11. The method according to claim 8, wherein: The first reference signal and the second reference signal are channel state information reference signals, sounding reference signals, tracking reference signals, phase tracking reference signals, or demodulation reference signals.

12. The method according to claim 8, wherein: The first reference signal and the second reference signal are each associated with a third identifier indicating the carrier bandwidth.

13. The method according to claim 1, wherein: Communicating with the base station in the carrier bandwidth includes: Radio resource management measurements associated with a single subband of the plurality of subbands, a set of subbands of the plurality of subbands, or the plurality of subbands are sent to the base station and in accordance with the configuration.

14. The method according to claim 1, wherein: Communicating with the base station in the carrier bandwidth includes: Channel state information associated with a single subband of the plurality of subbands, a set of subbands of the plurality of subbands, or the plurality of subbands is transmitted to the base station and in accordance with the configuration.

15. The method according to claim 1, wherein: Communicating with the base station in the carrier bandwidth includes: A physical downlink control channel message is received on at least one subband, the physical downlink control channel message scheduling one or more transmissions across a single subband, a subset of the plurality of subbands, or each subband of the plurality of subbands.

16. The method according to claim 1, wherein: Communicating with the base station in the carrier bandwidth includes: A downlink shared channel transmission comprising a set of transport blocks is received, wherein each transport block is received using one of the plurality of subbands.

17. The method according to claim 16, wherein: Each transport block in the set of transport blocks is associated with a modulation and coding scheme and a rank based at least in part on a subband used to receive each transport block.

18. The method according to claim 1, wherein: Communicating with the base station in the carrier bandwidth includes: A downlink shared channel transmission is received using two or more subbands, the downlink shared channel transmission comprising a single transport block spanning the two or more subbands.

19. The method of claim 18, wherein: The single transport block comprises two or more carrier block groups, each carrier block group being associated with one of the two or more subbands; and Each carrier block group is associated with a modulation and coding scheme.

20. The method according to claim 1, wherein: Communicating with the base station includes: A feedback message is sent indicating whether decoding of a downlink message spanning more than one subband was successful.

21. A method for wireless communication at a base station, comprising: identifying a carrier bandwidth for communicating broadband communications with a user equipment UE; receiving control information indicating an ability of the UE to communicate the broadband communications with the base station over a plurality of subbands spanning the carrier bandwidth, wherein the control information identifies one or more of the plurality of subbands that the UE prefers to use when communicating with the base station, wherein the one or more of the plurality of subbands are based at least in part on at least one of a center frequency of a frequency range used by the UE or an element spacing associated with an antenna of the UE; sending to the UE a configuration for communicating with the base station in the carrier bandwidth using a plurality of subband-based communications on the plurality of subbands across the carrier bandwidth; and One or more subbands of the plurality of subbands are used to communicate with the UE in the carrier bandwidth according to the configuration.

22. The method according to claim 21, wherein: Receiving the control information indicating the capability of the UE comprises: An indication of an antenna configuration for the UE is received, the antenna configuration associated with the element spacing of the antenna of the UE, a set of phases utilized by the antenna, one or more delay elements of the antenna, or a combination thereof.

23. The method according to claim 21, wherein: Receiving the control information indicating the capability of the UE comprises: An indication of one or more frequencies associated with the antennas of the UE is received, an indication of one or more bandwidths associated with the antennas of the UE is sent, or both.

24. The method according to claim 21, wherein: The configuration for communicating with the base station in the carrier bandwidth is based at least in part on an intersection of a first subset of the plurality of subbands associated with the antenna of the UE and a second subset of the plurality of subbands associated with an antenna of the base station.

25. An apparatus for wireless communication at a user equipment UE, comprising: processor, a memory coupled to the processor; as well as Instructions, which are stored in the memory and executable by the processor to cause the device to perform the following operations: identifying a carrier bandwidth for communicating broadband communications with a base station; transmitting control information indicating the ability of the UE to communicate the broadband communication with the base station over a plurality of subbands spanning the carrier bandwidth, wherein the control information identifies one or more of the plurality of subbands that the UE prefers to use when communicating with the base station, wherein the one or more of the plurality of subbands are based at least in part on at least one of a center frequency of a frequency range used by the UE or an element spacing associated with an antenna of the UE; receiving, from the base station, a configuration for communicating with the base station in the carrier bandwidth using a plurality of subband-based communications on the plurality of subbands spanning the carrier bandwidth; and One or more of the plurality of subbands are used to communicate with the base station in the carrier bandwidth according to the configuration.

26. An apparatus for wireless communication at a base station, comprising: processor, a memory coupled to the processor; as well as Instructions, which are stored in the memory and executable by the processor to cause the device to perform the following operations: identifying a carrier bandwidth for communicating broadband communications with a user equipment UE; receiving control information indicating the UE's ability to communicate the broadband communications with the base station over a plurality of subbands spanning the carrier bandwidth, wherein the control information identifies one or more of the plurality of subbands that the UE prefers to use when communicating with the base station, wherein the one or more of the plurality of subbands are based at least in part on at least one of a center frequency of a frequency range used by the UE or an element spacing associated with an antenna of the UE; sending to the UE a configuration for communicating with the base station in the carrier bandwidth using a plurality of subband-based communications over the plurality of subbands spanning the carrier bandwidth; and One or more subbands of the plurality of subbands are used to communicate with the UE in the carrier bandwidth according to the configuration.

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