Antenna group specific parameter configuration in millimeter wave communication

Abstract

Methods, systems, and devices are described for wireless communication in which a first wireless device, such as a user equipment (UE), may select a set of different groups of antenna elements that are preferred for millimeter wave communication at the first wireless device. The first wireless device may provide one or more parameters to the second wireless device indicating a number of antenna elements of the one or more antenna element groups used to determine the one or more transmission control parameters. The second wireless device may determine one or more transmission control parameters based on the indicated parameter and the number of antenna elements, the one or more transmission control parameters may be used for communication with the first wireless device.

Description

[0001] This application is a divisional application of the invention patent application with the application date of January 26, 2021, application number 202180010530.2, and invention name “Specific parameter configuration of antenna group in millimeter wave communication”.

[0002] Cross-references

[0003] This patent application claims priority to U.S. patent application No. 17 / 156,767, filed on January 25, 2021 by Raghavan et al., entitled “ANTENNA GROUP SPECIFIC PARAMETER CONFIGURATION IN MILLIMETER WAVE COMMUNICATIONS,” which claims the benefit of U.S. Provisional Patent Application No. 62 / 966,498, filed on January 27, 2020 by Raghavan et al., entitled “ANTENNA GROUP SPECIFIC PARAMETER CONFIGURATION IN MILLIMETER WAVE COMMUNICATIONS,” which has been assigned to its assignee.

[0004] introduction

[0005] The following relates generally to wireless communications and, more particularly, to configuration of antenna groups for wireless devices.

[0006] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, 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, advanced LTE (LTE-A systems) or LTE-A Pro systems, and fifth generation (5G) systems that may be referred to as new wireless (NR) systems. These systems may use techniques 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 spread spectrum 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 with multiple communication devices, which may also be referred to as user equipment (UE). Summary of the invention

[0007] A method of wireless communication is described. The method may include: receiving, at a first wireless device, signaling indicating a first set of antenna elements for communicating with a second wireless device, the first set of antenna elements including a first number of antenna elements among one or more antenna elements of a plurality of antenna elements of the first wireless device; and, based on one or more transmission control parameters, communicating with the second wireless device using the first set of antenna elements, wherein the one or more transmission control parameters include a power control parameter for uplink transmission to the second wireless device via a millimeter wave frequency band, and wherein the power control parameter is determined based on the first number of antenna elements.

[0008] An apparatus for wireless communication is described. The apparatus may include a processor and a memory coupled to the processor, the processor and the memory configured to: receive signaling at a first wireless device indicating a first set of antenna elements for communicating with a second wireless device, the first set of antenna elements including a first number of antenna elements among one or more antenna elements of a plurality of antenna elements of the first wireless device, and communicate with the second wireless device using the first set of antenna elements based on one or more transmission control parameters, wherein the one or more transmission control parameters include a power control parameter for uplink transmission to the second wireless device via a millimeter wave frequency band, and wherein the power control parameter is determined based on the first number of antenna elements.

[0009] Another apparatus for wireless communication is described. The apparatus may include: means for receiving, at a first wireless device, signaling indicating a first set of antenna elements for communicating with a second wireless device, the first set of antenna elements including a first number of antenna elements among one or more antenna elements of a plurality of antenna elements of the first wireless device; and means for communicating with the second wireless device using the first set of antenna elements based on one or more transmission control parameters, wherein the one or more transmission control parameters include a power control parameter for uplink transmission to the second wireless device via a millimeter wave frequency band, and wherein the power control parameter is determined based on the first number of antenna elements.

[0010] A non-transitory computer-readable medium having stored thereon code for wireless communication is described. The code may include instructions executable by a processor to: receive, at a first wireless device, signaling indicating a first set of antenna elements for communication with a second wireless device, the first set of antenna elements including a first number of antenna elements among one or more antenna elements of a plurality of antenna elements of the first wireless device; and, based on one or more transmission control parameters, a component for communicating with the second wireless device using the first set of antenna elements, wherein the one or more transmission control parameters include a power control parameter for uplink transmission to the second wireless device via a millimeter wave frequency band, and wherein the power control parameter is determined based on the first number of antenna elements.

[0011] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the one or more transmission control parameters include a power control parameter for uplink transmissions to a second wireless device via a millimeter wave frequency band, and the power control parameter is determined based on a first number of antenna elements. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the one or more transmission control parameters include a modulation coding scheme (MCS)-related phase compensation parameter for downlink transmissions received from a second wireless device via a millimeter wave frequency band, wherein the MCS-related phase compensation parameter is determined based on the first number of antenna elements.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving, from a second wireless device, an indication of configuring a digital beamforming codebook to be used for communicating with the second wireless device, wherein one or more parameters associated with the digital beamforming codebook are determined based on the first number of antenna elements.

[0013] In some examples of methods, apparatus, and non-transitory computer-readable media described herein, receiving may include operations, features, components, or instructions for measuring a training signal received from a second wireless device using two or more different antenna sets, sending a measurement report indicating a first set of antenna elements to the second wireless device, and receiving an indication from the second wireless device that the first set of antenna elements may be used to communicate with the second wireless device. In some examples of methods, apparatus, and non-transitory computer-readable media described herein, the measurement report may be sent to the second wireless device via radio resource control (RRC) signaling.

[0014] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the one or more transmission control parameters may be determined based on a mapping between a first number of antenna elements and associated transmission control parameters. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the millimeter wave band includes frequencies that may be greater than 52.6 GHz. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first wireless device may be a user equipment (UE) or a user premises equipment (CPE) in a wireless communication system, and the second wireless device may be a base station, a CPE, a relay device, a router, a repeater, or an integrated access backhaul (IAB) node in the wireless communication system.

[0015] A method of wireless communication at a second wireless device is described. The method may include: sending two or more training signals to a first wireless device as part of a beam training process for the first wireless device; receiving an indication of a first set of antenna elements from the first wireless device, wherein the first set of antenna elements includes a first number of antenna elements; and sending control information indicating digital beamforming codebook parameters to the first wireless device, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communication with the second wireless device, wherein the digital beamforming codebook parameters are determined based on the first number of antenna elements.

[0016] An apparatus for wireless communication at a second wireless device is described. The apparatus may include a processor and a memory coupled to the processor, the processor and the memory configured to: send two or more training signals to a first wireless device as part of a beam training process for the first wireless device; receive an indication of a first set of antenna elements from the first wireless device, wherein the first set of antenna elements includes a first number of antenna elements; and send control information indicating digital beamforming codebook parameters to the first wireless device, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communication with the second wireless device, wherein the digital beamforming codebook parameters are determined based on the first number of antenna elements.

[0017] Another apparatus for wireless communication at a second wireless device is described. The apparatus may include: means for sending two or more training signals to a first wireless device as part of a beam training process for the first wireless device; means for receiving an indication of a first set of antenna elements from the first wireless device, wherein the first set of antenna elements includes a first number of antenna elements; and means for sending control information indicating digital beamforming codebook parameters to the first wireless device, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communication with the second wireless device, wherein the digital beamforming codebook parameters are determined based on the first number of antenna elements.

[0018] A non-transitory computer-readable medium storing code for wireless communication at a second wireless device is described. The code may include instructions executable by a processor to: send two or more training signals to a first wireless device as part of a beam training process for the first wireless device; receive an indication of a first set of antenna elements from the first wireless device, wherein the first set of antenna elements includes a first number of antenna elements; and send control information indicating digital beamforming codebook parameters to the first wireless device, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communication with the second wireless device, wherein the digital beamforming codebook parameters are determined based on the first number of antenna elements.

[0019] Some examples of methods, apparatus, and non-transitory computer-readable media described herein may also include: operations, features, components, or instructions for receiving, from a first wireless device, power control parameters associated with a first number of antenna elements for uplink transmissions from the first wireless device, and receiving uplink transmissions from the first wireless device based on one or more reception parameters, the one or more reception parameters being based on the power control parameters. In some examples of methods, apparatus, and non-transitory computer-readable media described herein, the one or more reception parameters are determined based on a mapping between the first number of antenna elements and the associated reception parameters.

[0020] In some examples of methods, apparatus, and non-transitory computer-readable media described herein, the indication of the first set of antenna elements is received with a measurement report from the first wireless device, and determining the digital beamforming codebook parameters is also based on the measurement report. In some examples of methods, apparatus, and non-transitory computer-readable media described herein, the measurement report can be received from the first wireless device via RRC signaling.

[0021] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the millimeter wave frequency band includes frequencies that may be greater than 52.6 GHz. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first wireless device may be a UE or a CPE in a wireless communication system, and the second wireless device may be a base station, a CPE, a relay device, a router, a repeater, or an IAB node in the wireless communication system.

[0022] An apparatus for wireless communication at a second wireless device is described. The apparatus may include: one or more processors; and a memory coupled to the one or more processors, the one or more processors configured to cause the second wireless device to: send two or more training signals to a first wireless device as part of a beam training process for the first wireless device; receive from the first wireless device an indication of a first set of antenna elements and one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements; and send to the first wireless device control information indicating digital beamforming codebook parameters, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communication with the second wireless device, the digital beamforming codebook parameters being determined at least in part based on the one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements.

[0023] An apparatus for wireless communication at a second wireless device is described. The apparatus may include: means for sending two or more training signals to a first wireless device as part of a beam training process for the first wireless device; means for receiving from the first wireless device an indication of a first set of antenna elements and one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements, and means for sending to the first wireless device control information indicating digital beamforming codebook parameters, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communication with the second wireless device, the digital beamforming codebook parameters being determined based at least in part on the one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements.

[0024] A method for wireless communication at a second wireless device is described. The method includes: sending two or more training signals to a first wireless device as part of a beam training process for the first wireless device; receiving from the first wireless device an indication of a first set of antenna elements and one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements; and sending to the first wireless device control information indicating digital beamforming codebook parameters, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communication with the second wireless device, the digital beamforming codebook parameters being determined based at least in part on the one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements.

[0025] A non-transitory computer-readable medium for operating an apparatus is described, the non-transitory computer-readable medium including processor-executable program code, the executable program code being configured to cause one or more processors to: send two or more training signals to a first wireless device as part of a beam training process for the first wireless device; receive from the first wireless device an indication of a first set of antenna elements and one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements; and send to the first wireless device control information indicating digital beamforming codebook parameters, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communication with the second wireless device, the digital beamforming codebook parameters being determined at least in part based on the one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An example of a wireless communication system supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is illustrated.

[0027] Figure 2 An example of a wireless communication device with multiple antenna arrays supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is illustrated.

[0028] Figure 3 An example of a wireless communication system supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is illustrated.

[0029] Figure 4 An example of a process flow for supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is illustrated.

[0030] Figures 5 and 6 A block diagram of a device supporting antenna group specific parameter configuration in millimeter wave communication according to one or more aspects of the present disclosure is shown.

[0031] Figure 7 A block diagram of a communication manager supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown.

[0032] Figure 8 A schematic diagram of a system including a device supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown.

[0033] Figures 9 and 10A block diagram of a device supporting antenna group specific parameter configuration in millimeter wave communication according to one or more aspects of the present disclosure is shown.

[0034] Fig.11 A block diagram of a communication manager supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown.

[0035] Fig.12 A schematic diagram of a system including a device supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown.

[0036] Figures 13 to 17 A flow chart of a method for supporting antenna group specific parameter configuration in millimeter wave communication according to one or more aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0037] In some deployments, wireless communication systems may operate in the millimeter wave (mmW) frequency range (e.g., 24 GHz, 26 GHz, 28 GHz, 39 GHz, 52.6-71 GHz, etc.). Wireless communications at these frequencies may be associated with increased signal attenuation (e.g., path loss, penetration loss, blocking loss), which may be affected by various factors, such as diffraction, propagation environment, blocking density, material properties, etc. Therefore, signal processing techniques such as beamforming may be used to coherently combine energy and overcome path losses at these frequencies. Due to the increase in path, penetration, and blocking losses in mmW communication systems, transmissions between wireless devices (e.g., from base stations and / or UEs) may be beamformed. In addition, a receiving device may use beamforming techniques to configure an antenna and / or an antenna array and / or an antenna array module so that transmissions are received in a directional manner.

[0038] In some deployments, communications at mmW frequencies may utilize so-called frequency range 2 (FR2), corresponding to deployments in 24-52.6 GHz (e.g., 24 GHz, 26 GHz, 28 GHz, 39 GHz, etc.). As demand for wireless communications increases, additional mmW frequencies may be needed for some deployments, such as frequency range 4 (FR4) (also informally referred to as or upper mmW bands), which may be associated with 52.6 GHz and above. In many FR2 deployments, wireless devices use antenna modules that include multiple antenna elements, such as an array of four antenna elements per module in a 4x1 array arrangement or other example configurations. The upper mmW bands have shorter wavelengths, so more antenna elements can be placed in the same physical aperture in FR4 compared to FR2. For example, a FR4 device may have multiple antenna modules, each containing four 4x4 subarrays. In some cases, a wireless device (e.g., a UE) may be more likely to use or manage some possible combinations of subarrays within an antenna module or antenna elements on an antenna module than other devices.

[0039] Various aspects of the present disclosure provide that a wireless device may provide indications to one or more other wireless devices related to control parameters of one or more selected antenna element sets. For example, a first wireless device having multiple antenna modules may select multiple different antenna element sets for communication with a second wireless device, each antenna module having one or more antenna element subarrays, where the number of different sets may be substantially less than the total number of possible combinations of antenna elements. The first wireless device may determine one or more transmission control parameters for one or more antenna elements sets based on the number of antenna elements in a particular antenna element set. The first wireless device may use the determined transmission control parameters to communicate with the second wireless device using one or more antenna element sets (e.g., using a first antenna element set for receiving communications and a second antenna element set for sending communications).

[0040] In some cases, the first wireless device may provide one or more transmission control parameters to the second wireless device for communication with the first wireless device. For example, the transmission control parameters may include array size of one or more sets of antenna elements, array geometry of one or more sets of antenna elements, beam pattern of one or more sets of antenna elements, or any combination thereof. With different sets of antenna groups, the digital beamforming codebook used for communication between the first wireless device and the second wireless device may be configured to be specific to the specific set of antennas used for communication. In addition, for power control, the maximum transmittable power (e.g., P) at the first wireless device may be set to a value that is specific to the specific set of antennas used for communication. cmax) may depend on the set of antenna elements used in the communication due to, for example, effective isotropic radiated power (EIRP) limitations that may apply at the first wireless device, and different array sizes may result in different array gains, thereby affecting P cmax Alternatively, for a given P cmax , different antenna array configurations can result in different maximum allowed array gains, resulting in different levels of minimum allowed beamwidth from the antenna array. In addition, the MCS-related phase noise compensation can depend on the antenna array size used. The transmission control parameters can provide cmax The related information, array information, or a combination thereof, which can be used to determine the MCS of the communication based on the number of antenna elements in the antenna element group to be used for communication, the digital beamforming codebook, the MCS-related phase noise compensation, or any combination thereof.

[0041] These techniques may be used to indicate a preferred set of antenna elements and associated parameters for use in transmitting and receiving beamformed communications. For example, the antenna group size of the antenna group to be used for communications may result in a particular P cmax , the transmitting wireless device may indicate to the receiving wireless device that P cmax to set one or more parameters of the communication (e.g., the MCS of the communication). Additionally or alternatively, different antenna group sizes, geometries, or beam patterns may have different digital beamforming codebooks, and thus an indication of the antenna group size, geometry, and / or beam pattern may be used to select a digital beamforming codebook. Thus, providing an indication of the transmission control parameters may allow communications to be configured to provide enhanced efficiency and reliability while allowing the wireless device to select a particular group of antenna elements that may be preferred at the wireless device (e.g., to reduce power consumption, manage thermal overhead associated with different radio frequency components, manage which antenna arrays or modules are active, etc.).

[0042] Various aspects of the present disclosure are initially described in the context of wireless communication systems. Examples of antenna modules and antenna element groups are then discussed for some aspects. Various aspects of the present disclosure are further illustrated by and described with reference to device diagrams, system diagrams, and flow charts relating to antenna group specific parameter configurations in millimeter wave communications.

[0043] Figure 1An example of a wireless communication system 100 that supports antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is illustrated. 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 an LTE network, an LTE-A network, an LTE-A Pro network, or a new wireless (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low-latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0044] The base stations 105 may be dispersed throughout a geographic area to form the wireless communication system 100 and may be devices of different forms or with different capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base stations 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the base stations 105 and the UEs 115 may support communication of signals according to one or more radio access technologies.

[0045] The 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. The UEs 115 may be devices of different forms or with different capabilities. Figure 1 Some example UEs 115 are illustrated 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, repeater devices, CPE, IAB nodes, router devices, or other network devices), such as Figure 1 shown.

[0046] Base stations 105 may communicate with core network 130, or with each other, or both. For example, base station 105 may interact with core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3 or other interfaces). Base stations 105 may communicate with each other directly (e.g., directly between base stations 105) or indirectly (e.g., via core network 130) or directly and indirectly via backhaul links 120 (e.g., via X2, Xn or other interfaces). In some examples, backhaul link 120 may be or include one or more wireless links. In some examples, one or more base stations 105 may provide backhaul connectivity between another base station 105 and core network 130 via backhaul link 160 while acting as an IAB node. UE 115 may communicate with core network 130 via communication link 155.

[0047] The one or more base stations 105 described herein may include or may be referred to by one of ordinary skill in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next generation NodeB or a giga NodeB (any of which may be referred to as a gNB), a home NodeB, a home eNodeB, or other suitable terminology.

[0048] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, a subscriber device, or some other suitable terminology, where "device" may also be referred to as a unit, a station, a terminal, a client, or 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, a machine type communication (MTC) device, or other examples, which may be implemented in various objects such as appliances, vehicles, meters, or other examples.

[0049] 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 repeaters, routers, or CPE), as well as base stations 105 and network devices including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations or other examples, such as Figure 1 shown.

[0050] The UE 115 and the base station 105 can communicate with each other wirelessly via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a collection of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, the carrier used for the communication link 125 can include a portion of a radio frequency spectrum band (e.g., a bandwidth part (BWP)) that operates according to one or more physical layer channels of a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel can carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating the operation of the carrier, user data, or other signaling. The wireless communication system 100 can use carrier aggregation or multi-carrier operation to support communication with the UE 115. According to the carrier aggregation configuration, the UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used with frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0051] 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).

[0052] 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 a "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a plurality 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)). Devices of the wireless communication system 100 (e.g., a base station 105, a UE 115, or both) may have a hardware configuration that supports communications on a particular carrier bandwidth, or may be configurable to support communications 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 communications via carriers associated with a plurality of carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a sub-band, a BWP) or all of a carrier bandwidth.

[0053] The electromagnetic spectrum is often subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified with the frequency range names FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a "sub-6 GHz" band in various documents and articles. A similar naming issue sometimes arises for FR2, which is often referred to (interchangeably) as a "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz-300 GHz) which is identified as a "millimeter wave" band by the International Telecommunication Union (ITU).

[0054] Frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands of these mid-band frequencies as the frequency range designation FR3 (7.125GHz-24.25GHz). The frequency bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus can effectively extend the features of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations above 52.6GHz. For example, three higher operating frequency bands have been identified as the frequency designations FR4a or FR4-1 (52.6GHz-71 GHz), FR4 (52.6GH-114.25GHz), and FR5 (114.25GHz-300GHz). These higher frequency bands all fall within the EHF band.

[0055] In view of the above, unless otherwise explicitly stated, it should be understood that the term "sub-6 GHz" and the like used herein can broadly refer to frequencies that may be below 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise explicitly stated, it should be understood that the term "millimeter wave" and the like used herein can broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4a or FR4-1 and / or FR5, or may be within the EHF band.

[0056] The signal waveform sent on the carrier may be composed of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or DFT-S-OFDM). In a system using MCM techniques, a resource element may be composed of a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where 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 UE 115 and the higher the order of the modulation scheme, the higher the data rate for 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 improve the data rate or data integrity of communications with UE 115.

[0057] The time interval of the base station 105 or the UE 115 can be expressed as a multiple of the basic time unit. For example, the basic time unit can refer to T s =1 / (Δf max ·N f ) seconds sampling period, where Δf max It can indicate the maximum subcarrier spacing supported, and N f The maximum supported discrete Fourier transform (DFT) size may be indicated. The time intervals of the communication resources may be organized according to radio frames, each radio frame 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).

[0058] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, the frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into multiple 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 multiple symbol periods (e.g., depending on the length of the cyclic prefix pre-applied to each symbol period). In some wireless communication systems 100, the time slot may be further divided into multiple micro-time slots containing one or more symbols. In addition to 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.

[0059] A subframe, a time slot, a mini-time slot, or a 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 a burst of a shortened TTI (sTTI)).

[0060] Physical channels may be multiplexed on a carrier according to various techniques. For example, physical control channels and physical data channels may be multiplexed on a downlink carrier using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) of a physical control channel may be defined by a plurality 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 set of UEs 115. For example, one or more UEs 115 may monitor or search for 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 in one or more aggregation levels arranged in a cascaded manner. The aggregation level of a control channel candidate may refer to a plurality of control channel resources (e.g., control channel elements (CCEs)) associated with coded information of a control information format having a given payload size. A search space set may include a common search space set configured for sending control information to a plurality of UEs 115, and a UE-specific search space set for sending control information to a particular UE 115.

[0061] In some examples, the base stations 105 may be mobile, and thus 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 various geographic coverage areas 110 using the same or different radio access technologies.

[0062] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, M2M communication or MTC may include communication of devices that integrate sensors or meters to measure or capture information and relay the information to a central server or application that utilizes the information or presents the information to a human interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.

[0063] 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 dedicated 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 service prioritization, 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.

[0064] In some examples, UE 115 may also be able to communicate directly with other UE 115 via 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 this group may be outside the geographic coverage area 110 of the base station 105 or may not be able to receive transmissions from the base station 105. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system, in which each UE 115 transmits to 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.

[0065] In some systems, the D2D communication link 135 can be an example of a communication channel between vehicles (e.g., UE 115), such as a sidelink communication channel. In some systems, vehicles can use vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination thereof. Vehicles can use signals to send information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, vehicles in a V2X system can use vehicle-to-network (V2N) communication to communicate with roadside infrastructure (such as roadside units) or with a network or both via one or more network nodes (e.g., base station 105).

[0066] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, or 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 or interconnecting packets to an external network. The control plane entity may manage non-access stratum (NAS) functions of UE 115 served by a base station 105 associated with the core network 130, such as mobility, authentication, and bearer management. 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 operator IP service 150 may include access to the Internet, an intranet, an IP multimedia subsystem (IMS), or a packet-switched streaming service.

[0067] Some network devices (such as 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 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).

[0068] The wireless communication system 100 may operate using one or more frequency bands, sometimes 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 about one decimeter to one meter long. UHF waves may be blocked or redirected by buildings and environmental features, but these waves may penetrate structures sufficiently for a macro cell to provide service to a UE 115 located outdoors. Transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission of smaller frequencies and longer waves in the high frequency (HE) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0069] The wireless communication system 100 may also operate in a super high frequency (SHF) region using a frequency band from 3 GHz to 30 GHz (also referred to as a centimeter wave band), or in an EHF region of the spectrum (e.g., from 30 GHz to 300 GHz) (also referred to as a millimeter wave band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between a UE 115 and a base station 105, and the EHF antennas of the corresponding devices may be smaller and spaced closer than UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be limited by even greater atmospheric attenuation and a shorter range than SHF or UHF transmissions. The techniques described herein may be applied in transmissions using one or more different frequency regions, and the designated use of frequency bands across these frequency regions may vary by country or regulatory agency.

[0070] 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-U wireless access technology, or NR technology in unlicensed bands such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating in an unlicensed radio frequency spectrum band, devices such as the base station 105 and the UE 115 can employ carrier sensing for conflict detection and avoidance. In some examples, operation in an unlicensed band can be configured based on carrier aggregation in combination with component carriers operating in a licensed band (e.g., LAA). Operation in an unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, D2D transmissions, or other examples.

[0071] The base station 105 or UE 115 may be equipped with multiple antennas that 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 that 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 multiple rows and columns of antenna ports that the base station 105 uses 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. In addition or alternatively, the antenna panel may support radio frequency beamforming of signals sent via the antenna ports.

[0072] The base station 105 or UE 115 can use MIMO communication to utilize multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. This technology can be referred to as spatial multiplexing. For example, the multiple signals can be sent by the transmitting device via different antennas or different antenna combinations. Similarly, the multiple signals can be received by the receiving device via different antennas or different antenna combinations. Each of the multiple signals can be referred to as a separate spatial stream and can carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers can 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).

[0073] 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 shape or steer 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 at 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 antenna element may be defined by a set of beamforming weights associated with a specific orientation (e.g., relative to the antenna array of the transmitting device or the receiving device or relative to some other orientation).

[0074] The base station 105 or UE 115 may use beam scanning techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be sent multiple times by the base station 105 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 to identify (e.g., by a transmitting device (such as the base station 105) or by a receiving device (such as the UE 115)) a beam direction for later transmission or reception by the base station 105.

[0075] Some signals, such as data signals associated with a particular receiving device, may be sent by base station 105 in a single beam direction, e.g., a direction associated with a receiving device, such as UE 115. In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on signals sent in one or more beam directions. For example, UE 115 may receive one or more signals sent by base station 105 in different directions and may report to base station 105 an indication that UE 115 received the signal with the highest signal quality or other acceptable signal quality.

[0076] In some examples, transmissions by a device (e.g., base station 105 or UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or RF beamforming to generate a combined beam for transmission (e.g., from base station 105 to UE 115). 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. Base station 105 may send a reference signal (e.g., a cell-specific reference signal (CRS)) or a channel state information reference signal (CSI-RS), which may be precoded or unprecoded or both. 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 codebook, a linear combination codebook, a port selection 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).

[0077] 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 (e.g., different directional listening weight sets) applied to the signals received at multiple antenna elements of the antenna array, 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 which can be referred to as "listening" according to different reception configurations or reception directions. In some examples, the receiving device can receive along a single beam direction using a single reception configuration (e.g., when receiving a data signal). The single reception configuration can be aligned on a beam direction determined based on listening according to different reception configuration directions (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0078] UE 115 may include one or more antenna modules that may include a relatively large number of antenna elements for mmW communications and may be an example of a first wireless device discussed herein. UE communication manager 101 may manage mmW communications and in some cases may receive signaling indicating one or more different antenna element groups from one or more antenna modules that are preferentially used at UE 115. UE communication manager 101 may provide an indication of one or more transmission control parameters to a second wireless device (such as base station 105). The transmission control parameters may indicate, for example, a power control parameter that may depend on the number of antenna elements of the indicated antenna element group, a parameter associated with one or more selected antenna groups (such as array size, geometry, or beam pattern), a digital beamforming parameter based on the number of antenna elements, or any combination thereof. The transmission control parameters may be used to establish one or more beams that are to be used for communications using one or more different antenna element groups indicated by UE communication manager 101.

[0079] One or more base stations 105 may be examples of the second wireless devices discussed herein and may include a base station communication manager 102. The base station communication manager 102 may receive an indication of a transmission control parameter based on the array size from the first wireless device and in some cases may determine a wireless resource, a transmit power, an MCS, a digital beamforming codebook, or any combination thereof, for communicating with the first wireless device.

[0080] Figure 2 An example of a wireless communication device with multiple antenna arrays 200 supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is illustrated. In some examples, the wireless communication device with multiple antenna arrays 200 can implement various aspects of the wireless communication system 100. In this example, the wireless communication device can be a UE 115-a, although in other cases, the wireless communication device can be a different device, such as a CPE, a relay device, a router, a repeater, or an IAB node.

[0081] In this example, UE 115-a includes multiple different antenna modules, including a first antenna module 205, a second antenna module 210, and a third antenna module 215. Each of the antenna modules 205 to 215 may include multiple antenna element subarrays 220. In this example, the first antenna module 205 may include four subarrays 220, including a first subarray 220-a, a second subarray 220-b, a third subarray 220-c, and a fourth subarray 220-d. In this example, each subarray 220 may include 16 individual antenna elements 225 arranged in a 4x4 array configuration. In some cases, each antenna element 225 may be a patch antenna element configured to communicate in a high-band mmw deployment. Therefore, in various aspects, UE 115-a (or other device) may include multiple antenna elements that may be distributed over multiple antenna arrays, antenna subarrays, antenna modules, or any combination thereof. In some cases, the spacing of antenna elements 225 within each subarray 220 can be configured to provide efficient analog beamforming at wavelengths associated with high-band mmW communications (e.g., in FR4). Additionally, in this example, each subarray 220 can include an associated radio frequency integrated circuit (RFIC) 230.

[0082] exist Figure 2 In the example of , the second antenna module 210 may also include multiple subarrays 235, including a fifth subarray 235-a and a sixth subarray 235-b. In this example, the fifth subarray 235-a includes eight antenna elements arranged in a 4x2 array configuration, and the sixth subarray 235-b includes four antenna elements arranged in a 4x1 array configuration. In this case, a single RFIC (RFIC5) 240 can be coupled to the subarray 235, although multiple RFICs can be used or the RFIC can be shared with one or more other antenna modules 205 or 215. Although the antenna module 210 is illustrated as having multiple subarrays 235 of different sizes, other examples may have the same number of subarrays 235, each of which has the same size (e.g., four 4x4 antenna arrays similar to those shown in the first antenna module 205). The techniques discussed herein can be applied to any number of antenna modules 205 to 215, any number of subarrays included in each antenna module, any number of antennas per subarray, or any combination thereof.

[0083] As described herein, multiple RFICs 230 and associated antenna subarrays 220 may be used by a wireless device at different times. Figure 2In the case where the wireless device is a UE 115-a, it may be desirable to operate using a subset of antenna modules 205-215, using a subset of antenna subarrays 220 and associated RFICs 230, using a subset of antenna elements 225 within one or more subarrays 220, or any combination thereof. For example, such operation may allow the UE 115-a to manage power consumption in order to reduce the power used by the RFIC components. In other cases, in addition to or as an alternative to power consumption considerations, the UE 115-a may determine one or more maximum permitted exposure (MPE) limits, one or more thermal limits, or a combination thereof such that it is desirable to use some antenna element groups 225 of one or more subarrays 220. Thus, even if a relatively large number of antenna elements 225 are available at the UE 115-a, not all of the elements may be used at any particular moment. For example, the UE 115-a may have a total of N antenna elements 225 across each of the different antenna modules 205-215, and K antenna elements 225 may be selected for communication, resulting in N C K possibilities, which can result in a relatively large number of combinations of different antenna elements 225. The computational and processing complexity of searching over these large number of combinations may be too great to permit their use in actual mmW communications. Therefore, in some cases, the UE 115-a may select a relatively small list of antenna groups that are useful at a given time (e.g., based on power consumption, MPE considerations, thermal considerations, complexity considerations, antenna and architectural considerations, etc.). The UE 115-a may provide an indication of the selected antenna group and an indication of one or more transmission parameters based on the number of antenna elements in the one or more antenna groups to a second wireless device (e.g., a base station). Communication may then be established using one of the indicated antenna groups based on the one or more transmission parameters and the number of antenna elements in the antenna group. Reference Figure 3 and Figure 4 Various examples of indications of transmission control parameters for one or more antenna groups and processes based on these indications are discussed.

[0084] Figure 3 An example of a wireless communication system 300 that supports antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is illustrated. In some examples, the wireless communication system 300 can implement aspects of the wireless communication system 100. In some examples, the wireless communication system 300 can include a UE 115-b and a base station 105-a, which can be referenced Figure 1 to Figure 21 and 105. In addition, UE 115-b can be an example of a first wireless device, and base station 105-a can be an example of a second wireless device. UE 115-b and base station 105-a can communicate using beamformed communications, wherein UE 115-b sends uplink communications 305 to base station 105-a, and base station 105-a sends downlink communications 310 to UE 115-b.

[0085] In some cases, UE 115-b may include a relatively large number of antenna elements, which may be distributed across one or more antenna subarrays and one or more antenna modules, as described with reference to FIG. Figure 2 As described. UE 115-b may send antenna selection information 315 to base station 105-a, the antenna selection information indicating one or more different antenna groups that have been selected at UE 115-b and are preferred for establishing a transmission beam for mmW communication, and one or more transmission control parameters associated with the one or more antenna groups. The one or more transmission control parameters may be based on the number of antenna elements in the associated antenna group. In some cases, the one or more transmission control parameters may be mapped to multiple antenna elements of an antenna group, one or more attributes of a transmission, or a combination thereof. For example, MCS-related phase noise compensation may be mapped to a specific set of configured MCSs and the number of antenna elements used in a transmission. Where such mapping may be implemented, the mapping may be preconfigured or provided to UE 115-b when configuring connection establishment or reestablishment.

[0086] In some cases, the base station 105-a may initiate one or more processes based on the antenna selection information 315, such as a beam training process based on the indicated antenna group, wherein different base station beams 325 and different UE beams 330 may be tested and measured to identify a preferred beam for communication. For example, the UE 115-b may use multiple UE beams 330 to measure reference signals of multiple base station beams 325 and select a preferred beam, and provide feedback to the base station 105-a on the selected beam, such as through a selected transmission configuration indication (TCI) state. In some cases, the UE 115-b may send a CSI measurement report to the base station 105-a based on the measurements of the beam training process. In addition, in some cases, once a preferred beam has been selected, UE 115-b can send one or more transmission control parameters associated with the selected beam and associated antenna element group, which can then be used by base station 105-a to allocate resources to UE 115-b, schedule communications for UE 115-b, set a digital beamforming codebook, set one or more power control parameters, or any combination thereof.

[0087] In some cases, for example, the transmission control parameters may include an array size of one or more antenna element groups (which may also be referred to as sets), an array geometry of one or more antenna element sets, information associated with a beam pattern of one or more antenna element sets (e.g., beam width, sidelobe level, array gain, etc.), or any combination thereof. Using different antenna element sets, the digital beamforming codebook used for communication between UE 115-b and base station 105-a can be configured for a specific antenna group used for communication and can be indicated in a digital beamforming configuration 320 provided by base station 105-a. In some examples, the digital beamforming configuration 320 can be provided in downlink control information (DCI) having a resource grant provided to UE 115-b for uplink or downlink communications. In addition, for power control, the maximum transmittable power (e.g., P) at UE 115-b is set to the maximum transmittable power (e.g., P) at UE 115-b. cmax ) may depend on the set of antenna elements used in the communication due to EIRP limitations that may apply at UE 115-b, and different array sizes may result in different array gains, thus affecting P cmax In addition, the MCS-related phase noise compensation can depend on the antenna array size. The transmission control parameters can provide cmax The base station 105-a may include information related to the antenna groups, array information, or a combination thereof, which may be used to determine an MCS, a digital beamforming codebook, an MCS-related phase noise compensation, or any combination thereof for communication based on the number of antenna elements of the antenna array group to be used for communication. In addition, the base station 105-a may use the indication of the antenna groups to assist in scheduling based on the data rate and antenna gain of one or more antenna groups used for communication.

[0088] Figure 4 An example of a process flow 400 for supporting antenna group specific parameter configuration in millimeter wave communication according to one or more aspects of the present disclosure is illustrated. In some examples, the process flow 400 can implement aspects of the wireless communication system 100 or 300. The process flow 400 can be implemented by the first wireless device 405 and the second wireless device 410 described herein. The following alternative examples can be implemented, in which some steps are performed in a different order than described or not performed at all. In some cases, the steps may include additional features not mentioned below, or other steps may be added.

[0089] At 415, in some examples, the second wireless device 410 may determine one or more beam training parameters for initiating a beam training process for the first wireless device 405. In some cases, the one or more beam training parameters may be determined based on an indication of a plurality of different antenna element groups that have been selected by the first wireless device 405 for communication (e.g., based on the expected power consumption of the antenna module at the first wireless device 405, the thermal management process at the first wireless device 405, the MPE management process at the first wireless device, etc.). For example, the first wireless device 405 may have a plurality of different antenna modules, each of which may have one or more antenna subarrays. Furthermore, in some cases, each antenna subarray may have its own associated RFIC. The first wireless device 405 may desire to limit the number of antenna modules and / or RFICs that are active at any particular time in order to save power, manage thermal properties, manage MPE, or any combination thereof. In this case, the first wireless device 405 may identify antenna elements associated with a particular antenna subarray that is expected to be used within a particular time period, which may be provided to the second wireless device 410 and used to determine the beam training parameters.

[0090] At 420, in some examples, the second wireless device 410 can send a beam training indication to the first wireless device 405. The beam training indication can provide information related to resources to be used to send the training beam, parameters related to the training beam, etc. At 425, the second wireless device 410 can use multiple beams to send reference signals as part of the beam training process. In some cases, the second wireless device 410 can use a beam scanning process, in which a reference signal (e.g., CSI-RS) can be sent in consecutive different beams according to one or more determined beam training parameters.

[0091] At 430, the first wireless device may measure the received reference signals, determine the preferred antenna set, and format a measurement report. The measurement report (e.g., a CSI measurement report) may include information related to the measurement of one or more received reference signals (e.g., RSRP, SNR, etc.), and one or more transmission control parameters associated with one or more preferred antenna element groups based on the number of antenna elements in the antenna element group. In some cases, the first wireless device 405 may send an indication of the number of antenna elements in the one or more preferred antenna element groups. In some cases, the first wireless device 405 may also provide the geometry of one or more antenna element groups (e.g., planar array, linear array, distributed array, irregular array, etc.), information about the antenna beam pattern of one or more antenna element groups (e.g., the narrowest beam width, the best array gain, and the highest side lobe seen by the beam available on the array, etc.), or any combination thereof. At 435, the first wireless device 405 may send a measurement report to the second wireless device 410.

[0092] At 440, the second wireless device 410 may determine a beam and digital beamforming parameters for communicating with the first wireless device 405 based on the number of antenna elements of the indicated one or more antenna element groups. In some cases, the second wireless device 410 may determine a transmission power for communicating with the first wireless device 405, an MCS for communicating with the first wireless device 405, and determine parameters of a digital beamforming codebook for communicating with the first wireless device 405. At 445, in some examples, the second wireless device 410 may send a resource grant to the first wireless device 405, which may indicate resources and related parameters for an uplink or downlink grant, and a digital beamforming indication (e.g., a PMI mapped to a digital beamforming codebook). In some cases, the resource grant may be sent to the first wireless device 405 in a DCI transmission in a physical downlink control channel.

[0093] At 450, the first wireless device 405 may determine control parameters for communicating with the second wireless device 410 based on the indicated number of antenna elements and the resource grant and the digital beamforming indication. In some cases, the first wireless device 405 may determine an MCS-dependent phase noise compensation that depends on the antenna array used for communication and the MCS indicated in the resource grant. At 455, the second wireless device 410 may also determine control parameters for communicating with the second wireless device 410 based on the indicated number of antenna elements. At 460, the first wireless device 405 may send an uplink transmission to the second wireless device 410. The uplink transmission may be sent using the determined control parameters and may be received at the second wireless device 410 based on a receive parameter determined based on the number of elements in the antenna array used for transmission at the first wireless device 405.

[0094] Figure 5 A block diagram 500 of a device 505 supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown. The device 505 can be an example of various aspects of the first wireless device or UE 115 described herein. The device 505 may include a receiver 510, a communication manager 515, and a transmitter 520. The device 505 may also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0095] The receiver 510 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 antenna group specific parameter configuration in millimeter wave communications, etc.). The information may be passed to other components of the device 505. The receiver 510 may be a reference Figure 8 Examples of aspects of the transceiver 820 are described. The receiver 510 may utilize a single antenna or a collection of antennas.

[0096] The communication manager 515 may receive signaling indicating a first set of antenna elements for communicating with a second wireless device, the first set of antenna elements including a first number of antenna elements among one or more sets of antenna elements of the first wireless device, and, based on one or more transmission control parameters, communicate with the second wireless device using the first set of antenna elements, wherein the one or more transmission control parameters include a power control parameter for uplink transmission to the second wireless device via a millimeter wave frequency band, and wherein the power control parameter is determined based on the first number of antenna elements. The communication manager 515 may be an example of aspects of the communication manager 810 described herein.

[0097] As described herein, the communication manager 515 can be implemented to achieve one or more potential advantages. An implementation can allow the device 505 to provide an indication of the number of antenna elements of a preferred antenna group, which can allow for efficient determination of transmission control parameters for beamformed communications. Furthermore, implementations can allow the device 505 to more efficiently utilize processing resources, among other advantages.

[0098] The communication manager 515 may be an example of a component described herein for performing various aspects of configuration of an antenna group. The communication manager 515 or its subcomponents may be implemented in hardware (e.g., communication management circuitry). The circuitry may include a processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0099] In another implementation, the communication manager 515 or its subcomponents may be implemented in code executed by a processor (e.g., as communication management software or firmware) or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 515 or its subcomponents may be performed by a general purpose processor, DSP, ASIC, FPGA, or other programmable logic device.

[0100] In some examples, communications manager 515 may be configured to perform various operations (eg, receive, transmit, measure) using or in cooperation with receiver 510 , transmitter 520 , or both.

[0101] The communication manager 515 or its subcomponents can be physically located in various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, the communication manager 515 or its subcomponents can be separate and distinct components according to various aspects of the present disclosure. In some examples, according to various aspects of the present disclosure, the communication manager 515 or its subcomponents can 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 a combination thereof.

[0102] Transmitter 520 can transmit signals generated by other components of device 505. In some examples, transmitter 520 can be co-located with receiver 510 in a transceiver module. For example, transmitter 520 can be a reference Figure 8 Examples of various aspects of the transceiver 820 are described. The transmitter 520 may utilize a single antenna or a collection of antennas.

[0103] Figure 6 Block 600 of a device 605 supporting antenna group specific parameter configuration in millimeter wave communications according to various aspects of the present disclosure is shown. The device 605 can be an example of various aspects of the device 505, the first wireless device, or the UE described herein. The device 605 may include a receiver 610, a communication manager 615, and a transmitter 635. The device 605 may also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0104] 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 antenna group specific parameter configuration in millimeter wave communications, etc.). The information may be passed to other components of the device 605. For example, the receiver 610 may be a reference Figure 8 Examples of aspects of the transceiver 820 are described. The receiver 610 may utilize a single antenna or a collection of antennas.

[0105] The communication manager 615 may be an example of aspects of the communication manager 515 described herein. The communication manager 615 may include an antenna selection manager 620 and a beam manager 630. The communication manager 615 may be an example of aspects of the communication manager 810 described herein.

[0106] Antenna selection manager 620 may receive signaling indicating a first set of antenna elements for communicating with a second wireless device, the first set of antenna elements comprising a first number of antenna elements among one or more of the sets of antenna elements of the first wireless device.

[0107] The beam manager 630 can communicate with a second wireless device using a first set of antenna elements based on one or more transmission control parameters, wherein the one or more transmission control parameters may include a power control parameter for uplink transmission to the second wireless device via a millimeter wave band, and wherein the power control parameter may be determined based on the first number of antenna elements.

[0108] Transmitter 635 can transmit signals generated by other components of device 605. In some examples, transmitter 635 can be co-located with receiver 610 in a transceiver module. For example, transmitter 635 can be a reference Figure 8 Examples of various aspects of the transceiver 820 are described. The transmitter 635 can utilize a single antenna or a collection of antennas.

[0109] Figure 7A block diagram 700 of a communication manager 705 supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown. The communication manager 705 can be an example of aspects of the communication manager 515, the communication manager 615, or the communication manager 810 described herein. The communication manager 705 can include an antenna selection manager 710, a beam manager 720, a digital beamforming manager 725, and a measurement component 730. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0110] The antenna selection manager 710 may receive signaling indicating a first set of antenna elements for communicating with a second wireless device, the first set of antenna elements including a first number of antenna elements in one or more of a set of antenna elements of the first wireless device. In some cases, the antenna element array may be used for communication in a millimeter wave band including frequencies greater than 52.6 GHz. In some cases, the first wireless device is a UE or CPE in a wireless communication system, and the second wireless device is a base station, CPE, relay device, router, repeater, or IAB node in the wireless communication system.

[0111] The beam manager 720 may communicate with a second wireless device using a first set of antenna elements based on one or more transmission control parameters, wherein the one or more transmission control parameters may include a power control parameter for uplink transmission to the second wireless device via a millimeter wave frequency band, and wherein the power control parameter may be determined based on a first number of antenna elements. In some examples, the beam manager 720 may receive an indication from the second wireless device that the first set of antenna elements is to be used to communicate with the second wireless device. In some cases, the one or more transmission control parameters include a power control parameter for uplink transmission to the second wireless device via a millimeter wave frequency band, and the power control parameter is determined based on the first number of antenna elements. In some cases, the one or more transmission control parameters include an MCS-related phase compensation parameter for a downlink transmission received from the second wireless device via a millimeter wave frequency band, wherein the MCS-related phase compensation parameter is determined based on the first number of antenna elements. In some cases, the one or more transmission control parameters are determined based on a mapping between the first number of antenna elements and the associated transmission control parameters.

[0112] The digital beamforming manager 725 may receive an indication from the second wireless device to configure a digital beamforming codebook to be used for communicating with the second wireless device, wherein one or more parameters associated with the digital beamforming codebook are determined based on the first number of antenna elements.

[0113] The measuring component 730 can use two or more different antenna sets to measure one or more training signals received from the second wireless device. In some examples, the measuring component 730 can send a measurement report indicating the first antenna element set to the second wireless device. In some cases, the measurement report is sent to the second wireless device via RRC or MAC-CE signaling.

[0114] Figure 8 A schematic diagram of a system 800 including a device 805 supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown. The device 805 may be an example of or include components of the device 505, device 605, first wireless device, or UE described herein. The device 805 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 810, an I / O controller 815, a transceiver 820, an antenna 825, a memory 830, and a processor 840. These components may communicate electronically via one or more buses (e.g., bus 845).

[0115] The communication manager 810 can receive signaling indicating a first set of antenna elements for communicating with a second wireless device, the first set of antenna elements including a first number of antenna elements in one or more of the sets of antenna elements of the first wireless device; and, based on one or more transmission control parameters, communicate with the second wireless device using the first set of antenna elements, wherein the one or more transmission control parameters include a power control parameter for uplink transmission to the second wireless device via a millimeter wave frequency band, and wherein the power control parameter is determined based on the first number of antenna elements.

[0116] As described herein, the communication manager 810 can be implemented to achieve one or more potential advantages. An implementation can allow the device 805 to provide an indication of the number of antenna elements of a preferred antenna group, which can allow efficient determination of transmission control parameters for beamformed communications. Furthermore, implementations can allow the device 805 to more efficiently utilize processing resources, among other advantages.

[0117] I / O controller 815 can manage input and output signals for device 805. I / O controller 815 can also manage peripheral devices that are not integrated into device 805. In some cases, I / O controller 815 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 815 can utilize an operating system, such as Or another well-known operating system. In other cases, I / O controller 815 can represent or interact with a modem, keyboard, mouse, touch screen or similar device. In some cases, I / O controller 815 can be implemented as a part of a processor. In some cases, a user can interact with device 805 via I / O controller 815 or via a hardware component controlled by I / O controller 815.

[0118] The transceiver 820 may communicate bidirectionally via one or more antennas, wired links, or wireless links as described herein. For example, the transceiver 820 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 820 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.

[0119] In some cases, a wireless device may include a single antenna 825. However, in some cases, a device may have more than one antenna 825, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0120] The memory 830 may include random access memory (RAM) and read-only memory (ROM). The memory 830 may store computer-readable, computer-executable code 835, which includes instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 830 may also contain a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0121] The processor 840 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 840 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 840. The processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks to support antenna group-specific parameter configuration in millimeter wave communications).

[0122] The code 835 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 835 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 835 may not be directly executed by the processor 840, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0123] Fig. 9 A block diagram 900 of a device 905 supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown. The device 905 can be an example of various aspects of the second wireless device or base station described herein. The device 905 may include a receiver 910, a communication manager 915, and a transmitter 920. The device 905 may also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0124] The receiver 910 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 antenna group specific parameter configuration in millimeter wave communications, etc.). The information may be passed to other components of the device 905. For example, the receiver 910 may be a reference Fig.12 Examples of various aspects of the transceiver 1220 are described. The receiver 910 may utilize a single antenna or a collection of antennas.

[0125] The communication manager 915 may send two or more training signals to the first wireless device as part of a beam training process for the first wireless device; receive an indication of a first set of antenna elements from the first wireless device, the first set of antenna elements including a first number of antenna elements; and send control information indicating digital beamforming codebook parameters to the first wireless device, the digital beamforming codebook parameters may configure a digital beamforming codebook that may be used to communicate with the second wireless device, wherein the digital beamforming codebook parameters may be determined based on the first number of antenna elements. The communication manager 915 may be an example of aspects of the communication manager 1210 described herein.

[0126] The communication manager 915 may be an example of a component for performing various aspects of the configuration of the antenna group. The communication manager 915 or its subcomponents may be implemented in hardware (e.g., communication management circuitry). The circuitry may include a processor, DSP, ASIC, 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.

[0127] In another implementation, the communication manager 915 or its subcomponents may be implemented in code executed by a processor (e.g., as communication management software or firmware) or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 915 or its subcomponents may be performed by a general purpose processor, DSP, ASIC, FPGA, or other programmable logic device.

[0128] In some examples, communications manager 515 may be configured to perform various operations (eg, receive, transmit, measure) using or in cooperation with receiver 510 , transmitter 520 , or both.

[0129] The communication manager 915 or its subcomponents can be physically located in various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, the communication manager 915 or its subcomponents can be separate and distinct components according to various aspects of the present disclosure. In some examples, according to various aspects of the present disclosure, the communication manager 915 or its subcomponents can 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 a combination thereof.

[0130] The transmitter 920 can transmit signals generated by other components of the device 905. In some examples, the transmitter 920 can be co-located with the receiver 910 in a transceiver module. For example, the transmitter 920 can be a reference Fig.12 Examples of various aspects of the transceiver 1220 are described. The transmitter 920 can utilize a single antenna or a collection of antennas.

[0131] Fig.10 A block diagram 1000 of a device 1005 supporting antenna group specific parameter configuration in millimeter wave communication according to one or more aspects of the present disclosure is shown. The device 1005 can be an example of various aspects of the device 905, the first wireless device, or the base station described herein. The device 1005 may include a receiver 1010, a communication manager 1015, and a transmitter 1040. The device 1005 may also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0132] 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 antenna group specific parameter configuration in millimeter wave communications, etc.). The information may be passed to other components of the device 1005. For example, the receiver 1010 may be a reference Fig.12 Examples of various aspects of the transceiver 1220 are described. The receiver 1010 may utilize a single antenna or a collection of antennas.

[0133] The communication manager 1015 may be an example of aspects of the communication manager 915 described herein. The communication manager 1015 may include a beam training manager 1020, a beam manager 1025, and a control parameter manager 1035. The communication manager 1015 may be an example of aspects of the communication manager 1210 described herein.

[0134] The beam training manager 1020 may send two or more training signals to the first wireless device as part of a beam training process for the first wireless device.

[0135] The beam manager 1025 may receive an indication of a first set of antenna elements from a first wireless device, the first set of antenna elements comprising a first number of antenna elements.

[0136] The control parameter manager 1035 may send control information indicating a digital beamforming codebook parameter to the first wireless device, the digital beamforming codebook parameter configuring a digital beamforming codebook that may be used to communicate with the second wireless device, wherein the digital beamforming codebook parameter may be determined based on the first number of antenna elements.

[0137] Transmitter 1040 can transmit signals generated by other components of device 1005. In some examples, transmitter 1040 can be co-located with receiver 1010 in a transceiver module. For example, transmitter 1040 can be a reference Fig.12 Examples of various aspects of the transceiver 1220 are described. The transmitter 1040 can utilize a single antenna or a collection of antennas.

[0138] Fig.11 A block diagram 1100 of a communication manager 1105 supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown. The communication manager 1105 can be an example of aspects of the communication manager 915, the communication manager 1015, or the communication manager 1210 described herein. The communication manager 1105 can include a beam training manager 1110, a beam manager 1115, a control parameter manager 1125, and a measurement report manager 1130. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0139] The beam training manager 1110 may send two or more training signals to the first wireless device as part of a beam training process for the first wireless device.

[0140] The beam manager 1115 may receive an indication of a first set of antenna elements from a first wireless device, the first set of antenna elements including a first number of antenna elements. In some examples, the beam manager 1115 may receive an uplink transmission from the first wireless device based on one or more receive parameters. In some cases, the communication may use a millimeter wave band including frequencies greater than 52.6 GHz. In some cases, the first wireless device is a UE or CPE in a wireless communication system, and the second wireless device is a base station, CPE, relay device, router, repeater, or IAB node in the wireless communication system.

[0141] The control parameter manager 1125 may send control information indicating a digital beamforming codebook parameter to the first wireless device, the digital beamforming codebook parameter may configure a digital beamforming codebook that may be used to communicate with the second wireless device, wherein the digital beamforming codebook parameter may be determined based on the first number of antenna elements. In some examples, the control parameter manager 1125 may receive from the first wireless device a power control parameter (e.g., P) for uplink transmission from the first wireless device. cmax ), the power control parameter is associated with the first number of antenna elements. In some examples, the control parameter manager 1125 can determine one or more reception parameters for uplink transmission based on the power control parameter. In some cases, the one or more reception parameters are determined based on a mapping between the first number of antenna elements and the associated reception parameters.

[0142] The measurement report manager 1130 may receive one or more measurement reports, such as a CSI measurement report, as part of a beam training process. In some cases, an indication of the first set of antenna elements is received with a measurement report from a first wireless device, and wherein determining a digital beamforming codebook parameter is further based on the measurement report. In some cases, the measurement report is received from the first wireless device via RRC signaling.

[0143] Fig.12 A schematic diagram of a system 1200 including a device 1205 supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown. The device 1205 may be an example of or include components of the device 905, device 1005, second wireless device, or base station described herein. The device 1205 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 1210, a network communication manager 1215, a transceiver 1220, an antenna 1225, a memory 1230, a processor 1240, and an inter-station communication manager 1245. These components may communicate electronically via one or more buses (e.g., bus 1250).

[0144] The communication manager 1210 can send two or more training signals to a first wireless device as part of a beam training process for the first wireless device; receive an indication of a first set of antenna elements from the first wireless device, the first set of antenna elements including a first number of antenna elements; and send control information indicating digital beamforming codebook parameters to the first wireless device, the digital beamforming codebook parameters can configure a digital beamforming codebook that can be used to communicate with a second wireless device, wherein the digital beamforming codebook parameters can be determined based on the first number of antenna elements.

[0145] The network communications manager 1215 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1215 may manage the delivery of data communications for client devices, such as one or more UEs 115.

[0146] The transceiver 1220 may communicate bidirectionally via one or more antennas, wired links, or wireless links as described herein. For example, the transceiver 1220 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1220 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.

[0147] In some cases, a wireless device may include a single antenna 1225. However, in some cases, a device may have more than one antenna 1225, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0148] Memory 1230 may include RAM, ROM, or a combination thereof. Memory 1230 may store computer readable code 1235, which includes instructions that, when executed by a processor (e.g., processor 1240), cause the device to perform various functions described herein. In some cases, memory 1230 may also contain BIOS, which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0149] Processor 1240 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1240 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into processor 1240. Processor 1240 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1230) to cause device 1205 to perform various functions (e.g., functions or tasks to support antenna group-specific parameter configuration in millimeter wave communications).

[0150] The inter-site communication manager 1245 may manage communications with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communications with UE 115. For example, the inter-site communication manager 1245 may 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 1245 may provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0151] The code 1235 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1235 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 1235 may not be directly executed by the processor 1240, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0152] Fig.13 A flowchart of a method 1300 for supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown. The operations of the method 1300 may be implemented by a first wireless device or a component thereof as described herein. For example, the operations of the method 1300 may be implemented by a first wireless device or a component thereof as described herein. Figures 5 to 8 In some examples, the first wireless device may execute a set of instructions to control functional elements of the first wireless device to perform the functions described herein. Additionally or alternatively, the first wireless device may use dedicated hardware to perform various aspects of the functions described herein.

[0153] At 1305, the first wireless device may receive signaling indicating a first set of antenna elements for communicating with a second wireless device, the first set of antenna elements including a first number of antenna elements in one or more of the sets of antenna elements of the first wireless device. In some cases, the one or more transmission control parameters may include a power control parameter for uplink transmissions to the second wireless device via a millimeter wave frequency band, and the power control parameter may be determined based on the first number of antenna elements. The operations of 1305 may be performed according to the methods described herein. In some examples, aspects of the operations of 1305 may be performed according to the methods described herein. Figures 5 to 8 The antenna selection manager described is executed.

[0154] At 1310, the first wireless device may communicate with the second wireless device using the first set of antenna elements based on one or more transmission control parameters. The operations of 1310 may be performed according to the methods described herein. In some examples, aspects of the operations of 1310 may be described with reference to Figures 5 to 8 The beam manager described is used to perform the

[0155] Fig.14 A flowchart of a method 1400 for supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a first wireless device or a component thereof as described herein. For example, the operations of the method 1400 may be implemented by a first wireless device or a component thereof as described herein. Figures 5 to 8 In some examples, the first wireless device may execute a set of instructions to control functional elements of the first wireless device to perform the functions described herein. Additionally or alternatively, the first wireless device may use dedicated hardware to perform various aspects of the functions described herein.

[0156] At 1405, the first wireless device may receive signaling indicating a first set of antenna elements for communicating with a second wireless device, the first set of antenna elements including a first number of antenna elements in one or more of the sets of antenna elements of the first wireless device. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be described with reference to Figures 5 to 8 The antenna selection manager described is executed.

[0157] At 1410, the first wireless device may receive an indication from the second wireless device to configure a digital beamforming codebook to be used for communication with the second wireless device, wherein one or more parameters associated with the digital beamforming codebook are determined based on the first number of antenna elements. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be described with reference to Figures 5 to 8The digital beamforming manager described herein is implemented.

[0158] At 1415, the first wireless device may communicate with the second wireless device using the first set of antenna elements based on one or more transmission control parameters. In some cases, the one or more transmission control parameters may include a power control parameter for uplink transmissions to the second wireless device via the millimeter wave frequency band, and the power control parameter may be determined based on the first number of antenna elements. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1420 may be described with reference to Figures 5 to 8 The beam manager described is used to perform the

[0159] Fig.15 A flowchart of a method 1500 for supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a first wireless device or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a first wireless device or a component thereof as described herein. Figures 5 to 8 In some examples, the first wireless device may execute a set of instructions to control functional elements of the first wireless device to perform the functions described herein. Additionally or alternatively, the first wireless device may use dedicated hardware to perform various aspects of the functions described herein.

[0160] At 1505, the first wireless device may use two or more different antenna sets to measure one or more training signals received from the second wireless device. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be described with reference to Figures 5 to 8 The measurement components described are performed.

[0161] At 1510, the first wireless device may send a measurement report indicating the first set of antenna elements to the second wireless device. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be described with reference to Figures 5 to 8 The measurement components described are performed.

[0162] At 1515, the first wireless device may receive an indication from the second wireless device that the first set of antenna elements is to be used for communicating with the second wireless device. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be described with reference to Figures 5 to 8 The beam manager described is used to perform the

[0163] At 1520, the first wireless device may communicate with the second wireless device using the first set of antenna elements based on one or more transmission control parameters. In some cases, the one or more transmission control parameters may include a power control parameter for uplink transmissions to the second wireless device via the millimeter wave frequency band, and the power control parameter may be determined based on the first number of antenna elements. The operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be described with reference to Figures 5 to 8 The beam manager described is used to perform the

[0164] Fig.16 A flowchart of a method 1600 for supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a second wireless device or a component thereof as described herein. For example, the operations of the method 1600 may be implemented by a second wireless device or a component thereof as described herein. Figures 9 to 12 In some examples, the second wireless device may execute a set of instructions to control functional elements of the second wireless device to perform the functions described herein. Additionally or alternatively, the second wireless device may use dedicated hardware to perform various aspects of the functions described herein.

[0165] At 1605, the second wireless device may send two or more training signals to the first wireless device as part of a beam training process for the first wireless device. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be described with reference to Figures 9 to 12 The beam training manager described above is used to perform

[0166] At 1610, the second wireless device may receive an indication of a first set of antenna elements from the first wireless device, wherein the first set of antenna elements includes a first number of antenna elements. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be described with reference to Figures 9 to 12 The beam manager described is used to perform the

[0167] At 1615, the second wireless device may send control information indicating digital beamforming codebook parameters to the first wireless device, which digital beamforming codebook parameters may configure a digital beamforming codebook that may be used to communicate with the second wireless device. In some cases, the digital beamforming codebook parameters may be determined based on the first number of antenna elements. The operations of 1620 may be performed according to the methods described herein. In some examples, aspects of the operations of 1620 may be described with reference to Figures 9 to 12 The control parameters manager described here are implemented.

[0168] Fig.17A flowchart of a method 1700 for supporting antenna group specific parameter configuration in millimeter wave communications according to one or more aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a second wireless device or a component thereof as described herein. For example, the operations of the method 1700 may be implemented by a second wireless device or a component thereof as described herein. Figures 9 to 12 In some examples, the second wireless device may execute a set of instructions to control functional elements of the second wireless device to perform the functions described herein. Additionally or alternatively, the second wireless device may use dedicated hardware to perform various aspects of the functions described herein.

[0169] At 1705, the second wireless device may send two or more training signals to the first wireless device as part of a beam training process for the first wireless device. The operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be described with reference to Figures 9 to 12 The beam training manager described above is used to perform

[0170] At 1710, the second wireless device may receive an indication of a first set of antenna elements from the first wireless device, wherein the first set of antenna elements includes a first number of antenna elements. The operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be described with reference to Figures 9 to 12 The beam manager described is used to perform the

[0171] At 1715, the second wireless device may send control information indicating digital beamforming codebook parameters to the first wireless device, the digital beamforming codebook parameters configuring a digital beamforming codebook that may be used to communicate with the second wireless device. In some cases, the digital beamforming codebook may be determined based on the first number of antenna elements. The operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be described with reference to Figures 9 to 12 The control parameters manager described here are implemented.

[0172] At 1720, the second wireless device may receive from the first wireless device a power control parameter for an uplink transmission from the first wireless device, the power control parameter being associated with the first number of antenna elements. The operations of 1720 may be performed according to the methods described herein. In some examples, aspects of the operations of 1720 may be described with reference to Figures 9 to 12 The control parameters manager described here are implemented.

[0173] At 1725, the second wireless device may receive an uplink transmission from the first wireless device based on one or more reception parameters, the one or more reception parameters being based on the power control parameter. The operations of 1725 may be performed according to the methods described herein. In some examples, aspects of the operations of 1725 may be described with reference to Figures 9 to 12 The beam manager described is used to perform the

[0174] It should be noted that the methods described herein describe possible implementations, that operations and steps may be rearranged or modified, and that other implementations are possible. In addition, aspects of two or more methods may be combined.

[0175] Aspect 1: A method for wireless communication, comprising: receiving signaling at a first wireless device indicating a first set of antenna elements for communicating with a second wireless device, the first set of antenna elements including a first number of antenna elements among one or more of a plurality of antenna elements of the first wireless device; and, based on one or more transmission control parameters, communicating with the second wireless device using the first set of antenna elements, wherein the one or more transmission control parameters include a power control parameter for uplink transmission to the second wireless device via a millimeter wave frequency band, and wherein the power control parameter is determined based on the first number of antenna elements.

[0176] Aspect 2: According to the method described in Aspect 1, the one or more transmission control parameters include an MCS-related phase compensation parameter for a downlink transmission received from a second wireless device via a millimeter wave band, wherein the MCS-related phase compensation parameter is determined based on a first number of antenna elements.

[0177] Aspect 3: The method according to any one of Aspects 1 to 2 further includes: receiving an indication from a second wireless device to configure a digital beamforming codebook to be used for communicating with the second wireless device, wherein one or more parameters associated with the digital beamforming codebook are determined based on the first number of antenna elements.

[0178] Aspect 4: A method according to any one of Aspects 1 to 3, wherein receiving includes: measuring one or more training signals received from a second wireless device using two or more different antenna sets; sending a measurement report indicating a first antenna element set to the second wireless device; and receiving an indication from the second wireless device that the first antenna element set is to be used to communicate with the second wireless device.

[0179] Aspect 5: The method according to aspect 4, wherein the measurement report is sent to the second wireless device via radio resource control (RRC) signaling.

[0180] Aspect 6: The method according to any one of aspects 1 to 5, wherein one or more transmission control parameters are determined based on a mapping between the first number of antenna elements and the associated transmission control parameters.

[0181] Aspect 7: An apparatus comprising at least one component for performing the method according to any one of aspects 1 to 6.

[0182] Aspect 8: An apparatus for wireless communication, comprising a processor; a memory in electronic communication with 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 6.

[0183] Aspect 9: A non-transitory computer-readable medium storing a code for wireless communication, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 6.

[0184] Aspect 10: A method for wireless communication at a second wireless device, comprising: sending two or more training signals to a first wireless device as part of a beam training process for the first wireless device; receiving from the first wireless device an indication of a first set of antenna elements selected by the first wireless device for communicating with the second wireless device, the first set of antenna elements comprising a first number of antenna elements in one or more of a plurality of antenna elements of the first wireless device; and sending to the first wireless device control information indicating digital beamforming codebook parameters, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communicating with the second wireless device, wherein the digital beamforming codebook parameters are determined based on the first number of antenna elements.

[0185] Aspect 11: The method according to Aspect 10 also includes: receiving a power control parameter for an uplink transmission from the first wireless device from the first wireless device, the power control parameter being associated with the first number of antenna elements; and receiving an uplink transmission from the first wireless device based on one or more reception parameters, the one or more reception parameters being based on the power control parameter.

[0186] Aspect 12: The method according to any one of aspects 10 to 11, wherein one or more reception parameters are determined based on a mapping between a first number of antenna elements and associated reception parameters.

[0187] Aspect 13: The method according to any one of aspects 10 to 12, wherein the indication of the first set of antenna elements is received together with a measurement report from the first wireless device, and wherein determining the digital beamforming codebook parameters is also based on the measurement report.

[0188] Aspect 14: The method according to aspect 13, wherein the measurement report is received from the first wireless device via RRC signaling.

[0189] Aspect 15: The method according to any one of Aspects 10 to 14, wherein the first wireless device is a UE or a CPE in a wireless communication system, and the second wireless device is a base station, a CPE, a relay device, a router, a repeater or an IAB node in the wireless communication system.

[0190] Aspect 16: An apparatus comprising at least one component for performing the method according to any one of aspects 10 to 15.

[0191] Aspect 17: An apparatus for wireless communication, comprising a processor; a memory in electronic communication with 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 10 to 15.

[0192] Aspect 18: A non-transitory computer-readable medium storing a code for wireless communication, the code comprising instructions executable by a processor to perform a method according to any one of Examples 10 to 15.

[0193] Although aspects of LTE, LTE-A, LTE-APro, or NR systems may be described for purposes of example, and LTE, LTE-A, LTE-APro, or NR terminology may be used in many descriptions, the techniques described herein may be applied beyond LTE, LTE-A, LTE, APro, or NR networks. For example, the techniques described may be applied 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.

[0194] The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0195] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed using a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor; however, 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 combination of multiple microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration).

[0196] 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 or sent as one or more instructions or codes on a computer-readable medium. Other examples and implementations are also within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or any combination thereof. Features that implement the functions may also be physically located in various locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0197] Computer-readable media include non-transitory computer storage media and communication media, including any medium that is convenient for transferring a computer program from one place to another.Non-transitory storage media can be any available medium that can be accessed by a general or special computer.As an example and not limitation, non-transitory computer-readable media can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage device, disk storage device or other magnetic storage device, or can be used for carrying or storing desired program code components in the form of instructions or data structures and any other non-transitory media that can be accessed by a general or special computer or a general or special processor.In addition, any connection is appropriately referred to as computer-readable media.For example, if the software is sent from a website, server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave, then coaxial cable, optical fiber cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of computer-readable media. Disk and disc, as used herein, include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks and Blu-ray discs, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0198] As used herein, including in the claims, "or" used in a list of items (e.g., a list of items beginning with a phrase such as "at least one of" or "one or more of") means 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 referring to a closed set of conditions. For example, an example step described as "based on condition A" can be based on condition A and condition B without departing from the scope of this 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."

[0199] In the 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 similar components. If only the first reference numeral is used in the specification, the description applies to any similar component having the same first reference numeral, regardless of the second reference numeral or other subsequent reference numerals.

[0200] 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 "preferably" or "better than other examples." The detailed description includes specific details in order to provide an understanding of the described techniques. However, these techniques may be practiced 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.

[0201] The description provided herein is to enable one of ordinary skill in the art to make or use the present disclosure. Various modifications made to the present disclosure will be apparent to one 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 should conform to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for wireless communication, comprising: one or more processors; and a memory coupled to the one or more processors, the one or more processors being configured to cause the apparatus to: receiving, at a first wireless device, signaling indicating a first set of antenna elements for communicating with a second wireless device, the first set of antenna elements comprising a first number of antenna elements among one or more of a plurality of antenna elements of the first wireless device; as well as Communicate with the second wireless device using the first set of antenna elements based at least in part on one or more transmission control parameters, wherein the one or more transmission control parameters include a power control parameter for uplink transmissions to the second wireless device via a millimeter wave band, and wherein the power control parameter is determined based on the first number of antenna elements.

2. An apparatus for wireless communication at a second wireless device, comprising: one or more processors; and a memory coupled to the one or more processors, the one or more processors configured to cause the second wireless device to: sending two or more training signals to a first wireless device as part of a beam training process for the first wireless device; receiving, from the first wireless device, an indication of a first set of antenna elements and one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements; as well as, and sending control information indicating digital beamforming codebook parameters to the first wireless device, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communicating with the second wireless device, the digital beamforming codebook parameters being determined based at least in part on one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements.

3. The device according to claim 2, wherein: The one or more processors are further configured to cause the second wireless device to: receiving, from the first wireless device, a power control parameter for uplink transmissions from the first wireless device, the power control parameter being associated with the one or more transmission control parameters corresponding to the indicated number of antenna elements; as well as, An uplink transmission is received from the first wireless device based at least in part on one or more reception parameters, the one or more reception parameters being based at least in part on the power control parameter. 4 . The apparatus of claim 3 , wherein the one or more reception parameters are determined based at least in part on a mapping between the first number of antenna elements and associated reception parameters.

5. The apparatus of claim 2, wherein the indication of the first set of antenna elements is received with a measurement report from the first wireless device, and the determining the digital beamforming codebook parameters is further based at least in part on the measurement report.

6. The apparatus of claim 5, wherein the measurement report is received from the first wireless device via radio resource control (RRC) signaling.

7. The apparatus according to claim 2, wherein the first wireless device is a user equipment (UE) or a customer premises equipment (CPE) in a wireless communication system, and the second wireless device is a base station, a CPE, a relay device, a router, a repeater, or an integrated access backhaul (IAB) node in the wireless communication system.

8. An apparatus for wireless communication at a second wireless device, comprising: means for transmitting two or more training signals to a first wireless device as part of a beam training procedure for the first wireless device; means for receiving, from the first wireless device, an indication of a first set of antenna elements and one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements, and, Means for sending control information indicating digital beamforming codebook parameters to the first wireless device, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communicating with the second wireless device, the digital beamforming codebook parameters being determined based at least in part on one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements.

9. A method for wireless communication at a second wireless device, comprising: sending two or more training signals to a first wireless device as part of a beam training process for the first wireless device; receiving, from the first wireless device, an indication of a first set of antenna elements and one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements; as well as, and sending control information indicating digital beamforming codebook parameters to the first wireless device, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communicating with the second wireless device, the digital beamforming codebook parameters being determined based at least in part on one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements.

10. A non-transitory computer readable medium for operating an apparatus, the non-transitory computer readable medium comprising a processor executable program code, the executable program code configured to cause one or more processors to: sending two or more training signals to a first wireless device as part of a beam training process for the first wireless device; receiving, from the first wireless device, an indication of a first set of antenna elements and one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements; as well as, and sending control information indicating digital beamforming codebook parameters to the first wireless device, the digital beamforming codebook parameters configuring a digital beamforming codebook to be used for communicating with the second wireless device, the digital beamforming codebook parameters being determined based at least in part on one or more transmission control parameters corresponding to the indicated number of antenna elements in the first set of antenna elements.

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