WO2021217507A1

WO2021217507A1 - Techniques for configuring power spectral density for wireless systems

Info

Publication number: WO2021217507A1
Application number: PCT/CN2020/087828
Authority: WO
Inventors: Aleksandar Damnjanovic; Jing Sun; Xiaoxia Zhang; Changlong Xu
Original assignee: Qualcomm Incorporated
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-11-04

Abstract

Methods, systems, and devices for wireless communications are described that support multiple power spectral density (PSD) levels based on location information of a user equipment (UE) or a base station. For instance, a UE may receive a message including a set of PSD levels and corresponding location information for each PSD level in the set. The UE may determine its location and select a PSD level from the set for communicating based on the location. Additionally or alternatively, the base station may determine a supported location of the base station or UE and select a PSD level from the set of PSD levels for communicating based on the location determined by the base station. In some cases, the base station may transmit an indication of the selected PSD level to the UE and the UE and base station may communicate according to one of the selected PSD levels.

Description

TECHNIQUES FOR CONFIGURING POWER SPECTRAL DENSITY FOR WIRELESS SYSTEMS

FIELD OF TECHNOLOGY

The following relates, for example, to wireless communications and more specifically to techniques for configuring power spectral density (PSD) for wireless systems.

BACKGROUND

Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the 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, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE) .

In some wireless communications systems, a UE may communicate with a base station according to a power spectral density (PSD) level that defines a transmit power for a transmitting device. In some cases, the PSD level may be fixed or static for all communications between a base station and a UE. The use of an inflexible PSD level for communications may reduce the overall quality of communications between the wireless devices, as it may limit the transmit power that is able to be used for communicating, which may lead to communication failure or poor reception quality, among other issues.

SUMMARY

The described techniques relate to improved methods, systems, devices, and apparatuses that support techniques for configuring power spectral density (PSD) for wireless systems. The described techniques may enable a transmitting device in a wireless communications system, such as a user equipment (UE) or a base station, to communicate using a flexible or dynamic PSD level. In some cases, the PSD level used for communication may be selected from a number of available or configured PSD levels and may depend on a location of the transmitting device. For example, a UE may receive a message that includes a set of PSD levels and corresponding location information for each PSD level in the set. The UE may select a PSD level from the set for communicating on the location of the UE. Additionally or alternatively, the base station may determine its location or a location of the UE and select a PSD level for communicating with the UE based on the location. In some cases, the base station may transmit an indication of the selected PSD level to the UE. The UE and base station may subsequently communicate according to the selected PSD level.

A method of wireless communications at a UE is described. The method may include receiving a message including a set of PSD levels and corresponding location information for each PSD level in the set of PSD levels, determining a location of the UE, selecting a PSD level from the set of PSD levels for communications with a base station based on the location of the UE, and communicating with the base station based on the selected PSD level.

An apparatus for wireless communications at a UE is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive a message including a set of PSD levels and corresponding location information for each PSD level in the set of PSD levels, determine a location of the UE, select a PSD level from the set of PSD levels for communications with a base station based on the location of the UE, and communicate with the base station based on the selected PSD level.

Another apparatus for wireless communications at a UE is described. The apparatus may include means for receiving a message including a set of PSD levels and corresponding location information for each PSD level in the set of PSD levels, determining a location of the UE, selecting a PSD level from the set of PSD levels for communications with a base station based on the location of the UE, and communicating with the base station based on the selected PSD level.

A non-transitory computer-readable medium storing code for wireless communications at a UE is described. The code may include instructions executable by a processor to receive a message including a set of PSD levels and corresponding location information for each PSD level in the set of PSD levels, determine a location of the UE, select a PSD level from the set of PSD levels for communications with a base station based on the location of the UE, and communicate with the base station based on the selected PSD level.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to the base station, a message that indicates the location of the UE.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to the base station, an indication of the selected PSD level selected by the UE.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from the base station, an indication of a second PSD level for communications with the base station, the second PSD level different from the selected PSD level, and transmitting an uplink message to the base station based on the selected PSD level independent of the second PSD level.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the indication of the second PSD level may include operations, features, means, or instructions for receiving, from the base station, remaining minimum system information (RMSI) that includes the second PSD level.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the indication of the second PSD level may include operations, features, means, or instructions for receiving an upper limit corresponding to the second PSD level or a lower limit corresponding to the second PSD level.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a bandwidth part reconfiguration message based on the selected PSD level being below a threshold.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the bandwidth part reconfiguration message corresponds to one of an uplink bandwidth part or a downlink bandwidth part.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a wideband control channel to the base station based on the selected PSD level being below a threshold.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the wideband control channel includes a wideband PUCCH.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from the base station, location information for the UE, where determining the location of the UE may be based on the received location information.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving the message from the base station or a core network node, where the message includes information from a database including the set of PSD levels and corresponding location information for each PSD level in the set of PSD levels.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for storing the message at the UE, determining an updated location of the UE, selecting a second PSD level from the stored message based on the updated location of the UE, and transmitting an uplink message in accordance with the second PSD level.

A method of wireless communications at a base station is described. The method may include determining a location of the base station or of a UE supported by the base station, selecting a PSD level from a set of PSD levels for communications with the UE based on the location, and transmitting an indication of the selected PSD level to the UE.

An apparatus for wireless communications at a base station is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to determine a location of the base station or of a UE supported by the base station, select a PSD level from a set of PSD levels for communications with the UE based on the location, and transmit an indication of the selected PSD level to the UE.

Another apparatus for wireless communications at a base station is described. The apparatus may include means for determining a location of the base station or of a UE supported by the base station, selecting a PSD level from a set of PSD levels for communications with the UE based on the location, and transmitting an indication of the selected PSD level to the UE.

A non-transitory computer-readable medium storing code for wireless communications at a base station is described. The code may include instructions executable by a processor to determine a location of the base station or of a UE supported by the base station, select a PSD level from a set of PSD levels for communications with the UE based on the location, and transmit an indication of the selected PSD level to the UE.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, selecting the PSD level further may include operations, features, means, or instructions for selecting the PSD level based on information from a database including the set of PSD levels and corresponding location information for each of the set of PSD levels.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting information from the database to the UE.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving the information from the database from a core network node or a second base station.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from the UE, a message indicating the location of the UE.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, selecting the PSD level may include operations, features, means, or instructions for selecting the PSD level that corresponds to the location of the UE based on the message.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, after transmitting the indication of the selected PSD level, an uplink message from the UE in accordance with a second PSD level different from the selected PSD level, where the second PSD level corresponds to the location of the UE.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, before receiving the uplink message, a second message from the UE that indicates the second PSD level.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, after transmitting the indication of the selected PSD level, a downlink message to the UE in accordance with a second PSD level different from the selected PSD level, where the second PSD level corresponds to the location of the UE.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for communicating with the UE according to a second PSD level that corresponds to the location of the UE for a threshold duration of time.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the indication of the selected PSD level may include operations, features, means, or instructions for transmitting an upper limit corresponding to the selected PSD level or a lower limit corresponding to the selected PSD level.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting system information to the UE, where the indication of the selected PSD level may be included in the system information.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the system information includes RMSI and the indication of the selected PSD level may be included in the RMSI.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a downlink message that indicates a bandwidth part configuration for the UE based on the selected PSD level.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the bandwidth part configuration may be associated with an uplink bandwidth part or a downlink bandwidth part.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a downlink message that indicates a control channel configuration for the UE based on the selected PSD level.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the control channel configuration may be associated with a wideband uplink control channel for the UE.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, selecting the PSD level may include operations, features, means, or instructions for selecting the PSD level that corresponds to the location of the base station.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, after transmitting the indication of the selected PSD level, an uplink message from the UE in accordance with the selected PSD level.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, after transmitting the indication of the selected PSD level, a downlink message to the UE in accordance with the selected PSD level.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGs. 1 and 2 illustrate examples of wireless communications systems that supports techniques for configuring power spectral density (PSD) for wireless systems in accordance with aspects of the present disclosure.

FIG. 3 illustrates an example of a process flow that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure.

FIGs. 4 and 5 show block diagrams of devices that support techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure.

FIG. 6 shows a block diagram of a communications manager that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure.

FIG. 7 shows a diagram of a system including a device that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure.

FIGs. 8 and 9 show block diagrams of devices that support techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure.

FIG. 10 shows a block diagram of a communications manager that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure.

FIG. 11 shows a diagram of a system including a device that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure.

FIGs. 12 through 16 show flowcharts illustrating methods that support techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure.

DETAILED DESCRIPTION

In some wireless communications systems, a user equipment (UE) and a base station may communicate according to a power spectral density (PSD) level. The PSD level may be fixed at the UE and base station (e.g., based on a standard or operating regulation) . For example, the PSD level may be a static PSD level for communications at the UE and base station in order to protect incumbents (e.g., fixed or emergency services) at given frequency bands (e.g., in the 5 gigahertz (GHz) or 6 GHz frequency bands) . In some cases, however, a base station and a UE may operate in an area where no incumbents operate (e.g., there are no fixed services operating in a given region) , but the base station and the UE still apply the fixed PSD level to operate according to regulations. The use of a fixed PSD level in this scenario, and others, may result in communication delays, poor reception or transmission quality, inefficient use of network resources (e.g., due to retransmissions resulting from communication failures) , among others.

The techniques described herein may enable a UE to receive a message that indicates multiple PSD levels, each of which may correspond to a given location (e.g., a region within a nation, a geographic area) . In some cases, the PSD levels and corresponding location information may be included within a database accessible by the UE, the base station, or both. The UE may determine its location and select a PSD level (e.g., from the multiple PSD levels) that corresponds to its location. In some cases, the UE may transmit an indication of its location, an indication of the selected PSD level, or both to the base station.

Additionally or alternatively, the base station may determine its location or a location of a UE and select a PSD level for communications with the UE that corresponds to the location of the UE or base station. In some cases, the base station may determine the location of the UE based on location information received from the UE, and may transmit an indication of the selected PSD level to the UE (e.g., the base station may broadcast a PSD level to a group of UEs supported by the base station) . The UE and base station may subsequently communicate according to the selected PSD level, which may improve efficiency at the UE and base station, among other benefits.

Aspects of the disclosure are initially described in the context of wireless communications systems. Additional aspects are described with reference to process flows. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to techniques for configuring PSD for wireless systems.

FIG. 1 illustrates an example of a wireless communications system 100 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The wireless communications 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 communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communications 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.

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

The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. 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, the base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment) , as shown in FIG. 1.

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

One or more of the base stations 105 described herein may include or may be referred to by a person having 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 (either of which may be referred to as a gNB) , a Home NodeB, a Home eNodeB, or other suitable terminology.

A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A 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, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.

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

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

In some examples (e.g., in a carrier aggregation configuration) , a carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers. A carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute radio frequency channel number (EARFCN) ) and may be positioned according to a channel raster for discovery by the UEs 115. A carrier may be operated in a standalone mode where initial acquisition and connection may be conducted by the UEs 115 via the carrier, or the carrier may be operated in a non-standalone mode where a connection is anchored using a different carrier (e.g., of the same or a different radio access technology) .

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

A carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communications system 100. For example, the carrier bandwidth may be one of a number of determined bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz) ) . Devices of the wireless communications system 100 (e.g., the base stations 105, the UEs 115, or both) may have hardware configurations that support communications over a particular carrier bandwidth or may be configurable to support communications over one of a set of carrier bandwidths. In some examples, the wireless communications system 100 may include base stations 105 or UEs 115 that support simultaneous communications via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured for operating over portions (e.g., a sub-band, a BWP) or all of a carrier bandwidth.

Signal waveforms transmitted over a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) . In a system employing MCM techniques, a resource element may consist of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, where the symbol period and 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) . Thus, the more resource elements that a UE 115 receives and the higher the order of the modulation scheme, the higher the data rate may be for the UE 115. A wireless communications resource may refer to a combination of a radio frequency spectrum resource, a time resource, and a spatial resource (e.g., spatial layers or beams) , and the use of multiple spatial layers may further increase the data rate or data integrity for communications with a UE 115.

One or more numerologies for a carrier may be supported, where a numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time and communications for the UE 115 may be restricted to one or more active BWPs.

The time intervals for the base stations 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of T _s=1/ (Δf _max·N _f) seconds, where Δf _max may represent the maximum supported subcarrier spacing, and N _f may represent the maximum supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .

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

A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications 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 communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .

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

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

A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs 115 with service subscriptions with the network provider supporting the macro cell. A small cell may be associated with a lower-powered base station 105, as compared with a macro cell, and a small cell may operate in the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to the UEs 115 with service subscriptions with the network provider or may provide restricted access to the UEs 115 having an association with the small cell (e.g., the UEs 115 in a closed subscriber group (CSG) , the UEs 115 associated with users in a home or office) . A base station 105 may support one or multiple cells and may also support communications over the one or more cells using one or multiple component carriers.

In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB) ) that may provide access for different types of devices.

In some examples, a base station 105 may be movable and therefore provide communication coverage for a moving geographic coverage area 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, the overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

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

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

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

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

In some examples, a UE 115 may also be able to communicate directly with other UEs 115 over 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 communications may be within the geographic coverage area 110 of a base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of a base station 105 or be otherwise unable to receive transmissions from a base station 105. In some examples, groups of the UEs 115 communicating via D2D communications may utilize a one-to-many (1: M) system in which each UE 115 transmits to every other UE 115 in the group. In some examples, a base station 105 facilitates the scheduling of resources for D2D communications. In other cases, D2D communications are carried out between the UEs 115 without the involvement of a base station 105.

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

The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the base stations 105 associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to the network operators IP services 150. The operators IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.

Some of the network devices, such as a base station 105, may include subcomponents such as an access network entity 140, which may be an example of an access node controller (ANC) . Each access network entity 140 may communicate with the UEs 115 through one or more other access network transmission entities 145, which may be referred to as radio heads, smart radio heads, or transmission/reception points (TRPs) . Each access network transmission entity 145 may include one or more antenna panels. In some configurations, various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., a base station 105) .

The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 MHz to 300 GHz. In some examples, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. The UHF waves may be blocked or redirected by buildings and environmental features, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. The transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.

The wireless communications system 100 may also operate in a super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as the centimeter band, or in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) , also known as the millimeter band. In some examples, the wireless communications system 100 may support millimeter wave (mmW) communications between the UEs 115 and the base stations 105, and EHF antennas of the respective devices may be smaller and more closely spaced than UHF antennas. In some examples, this may facilitate use of antenna arrays within a device. The propagation of EHF transmissions, however, may be subject to even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions may differ by country or regulating body.

The wireless communications system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating in unlicensed radio frequency spectrum bands, devices such as the base stations 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations in unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA) . Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

A base station 105 or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a base station 105 may be located in diverse geographic locations. A base station 105 may have an antenna array with a number of rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, an antenna panel may support radio frequency beamforming for a signal transmitted via an antenna port.

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

Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may 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 may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating at particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .

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

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

In some examples, transmissions by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from a base station 105 to a UE 115) . The UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across a system bandwidth or one or more sub-bands. The base station 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS) ) , which may be precoded or unprecoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) . Although these techniques are described with reference to signals transmitted in one or more directions by a base station 105, a UE 115 may employ similar techniques for transmitting signals multiple times in different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal in a single direction (e.g., for transmitting data to a receiving device) .

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

The wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. A Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate over logical channels. A Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer may also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or a core network 130 supporting radio bearers for user plane data. At the physical layer, transport channels may be mapped to physical channels.

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

A UE 115 may identify multiple PSD levels supported by wireless communications system 100. For instance, the UE 115 may be preconfigured with multiple PSD levels based on local, regional, or national regulations or other governing bodies. In some cases, the UE 115 may receive a message (e.g., from a base station 105 or a node of the core network 130) that includes or indicates multiple PSD levels supported by the wireless communications system 100. Each of the multiple PSD levels may correspond to a given location. The UE 115 may determine its location and select a corresponding PSD level from the set PSD levels indicated to the UE 115 for communications with a base station 105 based on the location. Additionally or alternatively, the base station 105 may determine its location or a location of the UE 115 and select a PSD level for communications with the UE 115 based on the determined location. In some cases, the base station 105 may transmit the selected PSD level to the UE 115 instructing the UE 115 use the selected PSD level.

The UE 115 and base station 105 may subsequently communicate according to the selected PSD level. That is, a transmitting device (e.g., the UE 115 or the base station 105) may transmit one or more messages to a receiving device (e.g., the UE 115 or the base station 105) with a transmit power that corresponds to the selected PSD level. Alternatively, the UE 115 may determine that the PSD level indicated by the base station 105 is inaccurate or unsuitable (e.g., based on location information of the UE 115) , and may determine to use a different PSD level than the PSD level indicated by the base station 105. In such cases, the UE 115 may transmit, to the base station 105, an indication of the PSD level used by the UE 115 for communications.

FIG. 2 illustrates an example of a wireless communications system 200 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. In some examples, wireless communications system 200 may implement aspects of wireless communications system 100 and may include UE 215, base station 205 with coverage area 210, and communication link 225, which may be examples of the corresponding elements as described with reference to FIG. 1.

In wireless communications system 200, UE 215 may communicate with base station 205 using communication link 225. In some examples, the PSD level may be selected by UE 215 or base station 205 and signaled via an uplink 230 or a downlink 235 (e.g., in a PSD level indication 240) , which may increase efficiency in wireless communications system 200 by improving signaling consistency at UE 215.

In some examples (e.g., NR-U or LTE-LAA) , the PSD level for communication between a UE 215 and a base station 205 may be fixed or regulated. For example, the PSD level may be fixed at the UE 215 and the base station 205 to protect incumbents (e.g., fixed services such as emergency services) at the 5 GHz or 6 GHz frequency bands. The regulations may specify a fixed value according to a limit PSD level (e.g., 5 decibel-milliwatt (dBm) /MHz for a base station 205 and 1dBm/MHz for a UE 215) . However, in some cases, there may not be an incumbent in the coverage area 210 of the base station 205, but the base station 205 and the UE 215 may still apply the PSD level according to regulations, which may result in system inefficiencies (e.g., communication delays, poor reception or transmission quality, inefficient use of network resources, among others) .

As described herein, wireless communications system 200 may support the use of techniques that enable UE 215 and base station 205 to communicate using a variable PSD level. For example, base station 205 may select a PSD level for operation based on PSD level and location information in a database (e.g., location information corresponding to UE 215 or base station 205) . In some cases, the PSD level may be a relaxed PSD level according to PSD limitations based on regulation. Base station 205 may use downlink 235 to transmit PSD level indication 240-b corresponding to the PSD level to UE 215. In some examples, base station 205 may transmit the PSD level indication 240-b together with other system parameters in a system information message (e.g., a remaining minimum system information (RMSI) message) . In some cases, the PSD level corresponding to the PSD level indication 240-b may be -1dBm/MHz or 10dBm/MHz. Additionally or alternatively, base station 205 may indicate a PSD level mode. For example, base station 205 may indicate a high limit or a low limit mode corresponding to the PSD level.

In some examples, UE 215 may receive a message 245 indicating PSD levels corresponding to location information. For example, UE 215 may receive a message 245 including PSD level and location information, which may be in a database. The message may be from a core network node or base station 205. The UE 215 may determine its location (e.g., based on information in the database) . The UE 215 may select another PSD level based on the PSD levels indicated in the message 245 and the determined location. For example, UE 215 may select a PSD level based on PSD level information and corresponding location. In some examples, the PSD level may be different from the PSD level indicated by base station 205 in PSD level indication 240-b (e.g., because the UE 215 may determine to use a different PSD level than the PSD level corresponding to PSD level indication 240-b) .

In some cases, UE 215 may transmit a message via uplink 230 including PSD level indication 240-a, a location indication 250, or both to the base station 205. For example, UE 215 may select a PSD level different than the PSD level provided in PSD level indication 240-b and transmit PSD level indication 240-a to base station 205 via uplink 230 (e.g., during an initial access of the database information) . In some examples, UE 215 may select a relatively high PSD level based on the location of UE 215. In some cases, UE 215 may receive, or access, additional information such as a list of permitted channels to operate on. UE 215 may operate on one of the permitted channels using the selected PSD level. In some examples, base station 205 may use a relatively high PSD level for a preconfigured time based on receiving the PSD level indication 240-a from UE 215. Additionally, UE 215 may transmit a location indication 250 corresponding to the location of UE 215 via uplink 230. In some examples, the location information may correspond to a geographic location of the UE 215 (e.g., a country or region) , a relative location of the UE 215 to the base station 205, or a relative location of the UE 215 to other UEs 215.

The base station 205 may determine the location of the base station 205 or the UE 215 based on PSD level information and corresponding location information (e.g., from a database) . The base station 205 may identify whether there are incumbents that may be affected by signaling between the UE 215 and the base station 205 based on the location. For example, base station 205 may determine whether there are incumbents in coverage area 210. If base station 205 does not identify an incumbent, then the UE 215 may apply a PSD level according to a relaxed PSD limitation to communications with the base station 205. IN some cases, UE 215 and base station 205 may communicate according to one of PSD level indication 240-a or PSD level indication 240-b via communication link 225. In some cases, UE 215 may transmit an uplink message to base station 205 over communication link 225 using a PSD level corresponding to PSD level indication 240-a or PSD level indication 240-b. In some examples, base station 205 may transmit a downlink message to UE 215 over communication link 225 using a PSD level corresponding to PSD level indication 240-a or PSD level indication 240-b.

In some cases, the initial downlink or uplink BWP re-configuration for communications between a UE 215 and a base station 205 may depend on the PSD level. For example, the BWP may be re-configured if the PSD level is relatively low (e.g., in a low PSD level mode) . Additionally, communication on the wideband physical uplink control channel (PUCCH) (e.g., beyond 20 MHz) may depend on the PSD level (e.g., in a low PSD level mode) .

FIG. 3 illustrates an example of a process flow 300 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. In some examples, process flow 300 may implement aspects of

wireless communication systems

100 and 200 and may include UE 315 and base station 305, which may be examples of the corresponding elements as described with reference to FIGs. 1 and 2. The process flow 300 may illustrate an example of a PSD selection process for a UE 315 communicating with base station 305. Alternative examples of the following may be implemented, where some processes are performed in a different order than described or are not performed at all. In some cases, processes may include additional features not mentioned below, or further processes may be added.

At 335, base station 305 may determine a supported location of base station 305 or UE 315.

At 340, UE 315 may receive a message including a set of PSD levels and corresponding location information for each PSD level in the set. In some cases, core network 330 may send the PSD level and location information. In some other cases, base station 305 may send the PSD level and location information. The message may include information from a database including the set of PSD levels and corresponding location information for each PSD level in the set.

At 345, UE 315 may determine its location. For example, UE 315 may determine a geographic location (e.g., corresponding to a country or region) , a location relative to base station 305, or a location relative to other UEs 115. At 350, UE 315 may transmit a message that indicates the location of UE 315 determined at 345 to base station 305.

At 355, base station 305 may select a PSD level from a set of PSD levels for communicating with UE 315 based on the location determined at 335 (e.g., the location of base station 305 or UE 315) . Additionally or alternatively, base station 305 may select a PSD level from a set of PSD levels for communicating with UE 315 based on the location received at 350. In some examples, base station 305 may select the second PSD level based on information from a database including the set of PSD levels and corresponding location information for each PSD level of the set. Base station 305 may transmit information from the database to UE 315. Base station 305 may receive the information from the database from core network node 330 or a second base station 305.

At 360, base station 305 may transmit an indication of the selected PSD level to UE 315. For example, base station 305 may transmit the indication of the selected PSD level in system information (e.g., RMSI) . In some examples, the indication may include an upper limit corresponding to the selected PSD level or a lower limit corresponding to the selected PSD level. In some cases, base station 305 may transmit a downlink message that indicates BWP configuration associated with an uplink BWP or a downlink BWP for UE 315 based on the selected PSD level. In some examples, base station 305 may transmit a downlink message that indicates a control channel configuration (e.g., associated with a wideband control channel) for UE 315 based on the selected PSD level.

At 365, UE 315 may select a PSD level based on the location of UE 315 from the set of PSD levels for communicating with base station 305 received at 340. In some cases, the PSD level may be different from the PSD level selected by base station 305 at 355. At 370, UE 315 may transmit an indication of the selected PSD level to base station 305. In some examples, UE 315 may transmit a BWP reconfiguration message corresponding to an uplink BWP or a downlink BWP based on the selected PSD level being below a threshold. In some cases, UE 315 may transmit a wideband control channel (e.g., a wideband PUCCH) to base station 305 based on the selected PSD level being below a threshold. In some examples, UE 315 may store the message received at 340, determine an updated location, and select a PSD level from the stored message based on the updated location. UE 315 may transmit an uplink message based on the selected PSD level.

At 375, UE 315 and base station 305 may communicate based on the PSD level selected by UE 315 at 365 or the PSD level selected by base station 305 at 355. For example, UE 315 may transmit an uplink message to base station 305 using the PSD level selected by UE 315 at 365 independent of the PSD level selected by base station 305 at 355. In some examples, base station 305 may transmit a downlink message to UE 315 with the PSD level selected by UE 315 (e.g., corresponding to the location of UE 315) . In such examples, base station 305 may communicate with UE 315 according to the PSD level selected by UE 315 for a threshold duration of time (e.g., a preconfigured duration) .

FIG. 4 shows a block diagram 400 of a device 405 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The device 405 may be an example of aspects of a UE 115, a UE 215, or a UE 315 as described herein. The device 405 may include a receiver 410, a communications manager 415, and a transmitter 420. The device 405 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .

The receiver 410 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 techniques for configuring PSD for wireless systems, etc. ) . Information may be passed on to other components of the device 405. The receiver 410 may be an example of aspects of the transceiver 720 described with reference to FIG. 7. The receiver 410 may utilize a single antenna or a set of antennas.

The communications manager 415 may receive a message including a set of PSD levels and corresponding location information for each PSD level in the set of PSD levels, determine a location of the UE, select a PSD level from the set of PSD levels for communications with a base station based on the location of the UE, and communicate with the base station based on the selected PSD level. The communications manager 415 may be an example of aspects of the communications manager 710 described herein.

The actions performed by the communications manager 415 as described herein may be implemented to realize one or more potential advantages. One implementation may enable a UE to select a PSD level based on the location of the UE and transmit an indication of the PSD level to a base station. Such indication may enable a UE and a base station to communicate according to the selected PSD level, which may result more efficient use of network resources as well as more efficient communications (e.g., less communication errors due to retransmissions) , among other advantages.

Based on implementing the indications as described herein, a processor of a UE or base station (e.g., a processor controlling the receiver 410, the communications manager 415, the transmitter 420, or a combination thereof) may reduce the impact of PSD related regulations in a communications system while ensuring relatively efficient communications. For example, the PSD level selection techniques described herein may leverage a location of the UE or the base station for uplink and downlink communications, which may realize improved transmission and reception quality, among other benefits.

The communications manager 415, or its sub-components, may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 415, or its sub-components may be executed by a general-purpose processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

The communications manager 415, or its sub-components, may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical components. In some examples, the communications manager 415, or its sub-components, may be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, the communications manager 415, or its sub-components, may be combined with one or more other hardware components, including but not limited to an input/output (I/O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.

The transmitter 420 may transmit signals generated by other components of the device 405. In some examples, the transmitter 420 may be collocated with a receiver 410 in a transceiver module. For example, the transmitter 420 may be an example of aspects of the transceiver 720 described with reference to FIG. 7. The transmitter 420 may utilize a single antenna or a set of antennas.

FIG. 5 shows a block diagram 500 of a device 505 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The device 505 may be an example of aspects of a device 405, or a UE 115, a UE 215, or a UE 315 as described herein. The device 505 may include a receiver 510, a communications manager 515, and a transmitter 535. The device 505 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .

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 techniques for configuring PSD for wireless systems, etc. ) . Information may be passed on to other components of the device 505. The receiver 510 may be an example of aspects of the transceiver 720 described with reference to FIG. 7. The receiver 510 may utilize a single antenna or a set of antennas.

The communications manager 515 may be an example of aspects of the communications manager 415 as described herein. The communications manager 515 may include a message component 520, a location component 525, and a PSD level component 530. The communications manager 515 may be an example of aspects of the communications manager 710 described herein.

The message component 520 may receive a message including a set of PSD levels and corresponding location information for each PSD level in the set of PSD levels. The location component 525 may determine a location of the UE. The PSD level component 530 may select a PSD level from the set of PSD levels for communications with a base station based on the location of the UE and communicate with the base station based on the selected PSD level.

The transmitter 535 may transmit signals generated by other components of the device 505. In some examples, the transmitter 535 may be collocated with a receiver 510 in a transceiver module. For example, the transmitter 535 may be an example of aspects of the transceiver 720 described with reference to FIG. 7. The transmitter 535 may utilize a single antenna or a set of antennas.

FIG. 6 shows a block diagram 600 of a communications manager 605 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The communications manager 605 may be an example of aspects of a communications manager 415, a communications manager 515, or a communications manager 710 described herein. The communications manager 605 may include a message component 610, a location component 615, a PSD level component 620, a BWP component 625, and a control component 630. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .

The message component 610 may receive a message including a set of PSD levels and corresponding location information for each PSD level in the set of PSD levels. In some examples, the message component 610 may receive the message from the base station or a core network node, where the message includes information from a database including the set of PSD levels and corresponding location information for each PSD level in the set of PSD levels. In some examples, the message component 610 may store the database at the UE. In some examples, the message component 610 may receive location information for the UE from a base station.

The location component 615 may determine a location of the UE. In some examples, the location component 615 may determine the location based on receiving the location information from the base station. In some examples, the location component 615 may transmit, to the base station, a message that indicates the location of the UE. The PSD level component 620 may select a PSD level from the set of PSD levels for communications with a base station based on the location of the UE. In some examples, the location component 615 may determine an updated location of the UE. In some examples, the PSD level component 620 may select a second PSD level from the stored message based on the updated location of the UE. In some examples, the PSD level component 620 may transmit an uplink message in accordance with the second PSD level.

In some examples, the PSD level component 620 may communicate with the base station based on the selected PSD level. In some examples, the PSD level component 620 may transmit, to the base station, an indication of the selected PSD level selected by the UE. In some examples, the PSD level component 620 may receive, from the base station, an indication of a second PSD level for communications with the base station, the second PSD level different from the selected PSD level. In some examples, the PSD level component 620 may transmit an uplink message to the base station based on the selected PSD level independent of the second PSD level. In some examples, the PSD level component 620 may receive, from the base station, RMSI that includes the second PSD level. In some examples, the PSD level component 620 may receive an upper limit corresponding to the second PSD level or a lower limit corresponding to the second PSD level.

The BWP component 625 may transmit a BWP reconfiguration message based on the selected PSD level being below a threshold. In some cases, the BWP reconfiguration message corresponds to one of an uplink BWP or a downlink BWP.

The control component 630 may transmit a wideband control channel to the base station based on the selected PSD level being below a threshold. In some cases, the wideband control channel includes a wideband PUCCH.

FIG. 7 shows a diagram of a system 700 including a device 705 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The device 705 may be an example of or include the components of device 405, device 505, a UE 115, a UE 215, or a UE 315 as described herein. The device 705 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 710, an I/O controller 715, a transceiver 720, an antenna 725, memory 730, and a processor 740. These components may be in electronic communication via one or more buses (e.g., bus 745) .

The communications manager 710 may receive a message including a set of PSD levels and corresponding location information for each PSD level in the set of PSD levels, determine a location of the UE, select a PSD level from the set of PSD levels for communications with a base station based on the location of the UE, and communicate with the base station based on the selected power spectral density level.

The I/O controller 715 may manage input and output signals for the device 705. The I/O controller 715 may also manage peripherals not integrated into the device 705. In some cases, the I/O controller 715 may represent a physical connection or port to an external peripheral. In some cases, the I/O controller 715 may utilize an operating system such as

or another known operating system. In other cases, the I/O controller 715 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I/O controller 715 may be implemented as part of a processor. In some cases, a user may interact with the device 705 via the I/O controller 715 or via hardware components controlled by the I/O controller 715.

The transceiver 720 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above. For example, the transceiver 720 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 720 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.

In some cases, the wireless device may include a single antenna 725. However, in some cases the device may have more than one antenna 725, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.

The memory 730 may include random-access memory (RAM) and read-only memory (ROM) . The memory 730 may store computer-readable, computer-executable code 735 including instructions that, when executed, cause the processor to perform various functions described herein. In some cases, the memory 730 may contain, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.

The processor 740 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a central processing unit (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 740 may be configured to operate a memory array using a memory controller. In other cases, a memory controller may be integrated into the processor 740. The processor 740 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 730) to cause the device 705 to perform various functions (e.g., functions or tasks supporting techniques for configuring PSD for wireless systems) .

The code 735 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications. The code 735 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 735 may not be directly executable by the processor 740 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.

FIG. 8 shows a block diagram 800 of a device 805 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The device 805 may be an example of aspects of a base station 105, a base station 205, or a base station 305 as described herein. The device 805 may include a receiver 810, a communications manager 815, and a transmitter 820. The device 805 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .

The receiver 810 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 techniques for configuring PSD for wireless systems, etc. ) . Information may be passed on to other components of the device 805. The receiver 810 may be an example of aspects of the transceiver 1120 described with reference to FIG. 11. The receiver 810 may utilize a single antenna or a set of antennas.

The communications manager 815 may determine a location of the base station or of a UE supported by the base station, select a PSD level from a set of PSD levels for communications with the UE based on the location, and transmit an indication of the selected PSD level to the UE. The communications manager 815 may be an example of aspects of the communications manager 1110 described herein.

The communications manager 815, or its sub-components, may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 815, or its sub-components may be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC) , a 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.

The communications manager 815, or its sub-components, may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical components. In some examples, the communications manager 815, or its sub-components, may be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, the communications manager 815, or its sub-components, may be combined with one or more other hardware components, including but not limited to an input/output (I/O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.

The transmitter 820 may transmit signals generated by other components of the device 805. In some examples, the transmitter 820 may be collocated with a receiver 810 in a transceiver module. For example, the transmitter 820 may be an example of aspects of the transceiver 1120 described with reference to FIG. 11. The transmitter 820 may utilize a single antenna or a set of antennas.

FIG. 9 shows a block diagram 900 of a device 905 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The device 905 may be an example of aspects of a device 805, or a base station 105 as described herein. The device 905 may include a receiver 910, a communications manager 915, and a transmitter 935. The device 905 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .

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 techniques for configuring PSD for wireless systems, etc. ) . Information may be passed on to other components of the device 905. The receiver 910 may be an example of aspects of the transceiver 1120 described with reference to FIG. 11. The receiver 910 may utilize a single antenna or a set of antennas.

The communications manager 915 may be an example of aspects of the communications manager 815 as described herein. The communications manager 915 may include a location component 920, a PSD level component 925, and an indication component 930. The communications manager 915 may be an example of aspects of the communications manager 1110 described herein.

The location component 920 may determine a location of the base station or of a UE supported by the base station. The PSD level component 925 may select a PSD level from a set of PSD levels for communications with the UE based on the location. The indication component 930 may transmit an indication of the selected PSD level to the UE.

The transmitter 935 may transmit signals generated by other components of the device 905. In some examples, the transmitter 935 may be collocated with a receiver 910 in a transceiver module. For example, the transmitter 935 may be an example of aspects of the transceiver 1120 described with reference to FIG. 11. The transmitter 935 may utilize a single antenna or a set of antennas.

FIG. 10 shows a block diagram 1000 of a communications manager 1005 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The communications manager 1005 may be an example of aspects of a communications manager 815, a communications manager 915, or a communications manager 1110 described herein. The communications manager 1005 may include a location component 1010, a PSD level component 1015, an indication component 1020, a message component 1025, a BWP component 1030, and a control component 1035. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .

The location component 1010 may determine a location of the base station or of a UE supported by the base station. In some examples, the location component 1010 may receive, from the UE, a message indicating the location of the UE. The PSD level component 1015 may select a PSD level from a set of PSD levels for communications with the UE based on the location. In some examples, the PSD level component 1015 may select the PSD level that corresponds to the location of the UE based on the message. In some examples, the PSD level component 1015 may select the PSD level based on information from a database including the set of PSD levels and corresponding location information for each of the set of PSD levels. In some examples, the PSD level component 1015 may transmit information from the database to the UE. In some examples, the PSD level component 1015 may receive the information from the database from a core network node or a second base station.

In some examples, the PSD level component 1015 may communicate with the UE according to a second PSD level that corresponds to the location of the UE for a threshold duration of time. In some examples, the PSD level component 1015 may transmit an upper limit corresponding to the selected PSD level or a lower limit corresponding to the selected PSD level. In some examples, the PSD level component 1015 may select the PSD level that corresponds to the location of the base station.

The indication component 1020 may transmit an indication of the selected PSD level to the UE. In some examples, the indication component 1020 may transmit system information to the UE, where the indication of the selected PSD level is included in the system information. In some cases, the system information includes RMSI and the indication of the selected PSD level is included in the RMSI.

The message component 1025 may receive, after transmitting the indication of the selected PSD level, an uplink message from the UE in accordance with a second PSD level different from the selected PSD level, where the second PSD level corresponds to the location of the UE. In some examples, the message component 1025 may receive, before receiving the uplink message, a second message from the UE that indicates the second PSD level. In some examples, the message component 1025 may transmit, after transmitting the indication of the selected PSD level, a downlink message to the UE in accordance with a second PSD level different from the selected PSD level, where the second PSD level corresponds to the location of the UE.

In some examples, the message component 1025 may receive, after transmitting the indication of the selected PSD level, an uplink message from the UE in accordance with the selected PSD level. In some examples, the message component 1025 may transmit, after transmitting the indication of the selected PSD level, a downlink message to the UE in accordance with the selected PSD level.

The BWP component 1030 may transmit a downlink message that indicates a BWP configuration for the UE based on the selected PSD level. In some cases, the BWP configuration is associated with an uplink BWP or a downlink BWP.

The control component 1035 may transmit a downlink message that indicates a control channel configuration for the UE based on the selected PSD level. In some cases, the control channel configuration is associated with a wideband uplink control channel for the UE.

FIG. 11 shows a diagram of a system 1100 including a device 1105 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The device 1105 may be an example of or include the components of device 805, device 905, a base station 105, a base station 205, or a base station 305 as described herein. The device 1105 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 1110, a network communications manager 1115, a transceiver 1120, an antenna 1125, memory 1130, a processor 1140, and an inter-station communications manager 1145. These components may be in electronic communication via one or more buses (e.g., bus 1150) .

The communications manager 1110 may determine a location of the base station or of a UE supported by the base station, select a PSD level from a set of PSD levels for communications with the UE based on the location, and transmit an indication of the selected PSD level to the UE.

The network communications manager 1115 may manage communications with the core network (e.g., via one or more wired backhaul links) . For example, the network communications manager 1115 may manage the transfer of data communications for client devices, such as one or more UEs 115.

The transceiver 1120 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above. For example, the transceiver 1120 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 1120 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.

In some cases, the wireless device may include a single antenna 1125. However, in some cases the device may have more than one antenna 1125, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.

The memory 1130 may include RAM, ROM, or a combination thereof. The memory 1130 may store computer-readable code 1135 including instructions that, when executed by a processor (e.g., the processor 1140) cause the device to perform various functions described herein. In some cases, the memory 1130 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.

The processor 1140 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 1140 may be configured to operate a memory array using a memory controller. In some cases, a memory controller may be integrated into processor 1140. The processor 1140 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1130) to cause the device 1105 to perform various functions (e.g., functions or tasks supporting techniques for configuring PSD for wireless systems) .

The inter-station communications manager 1145 may manage communications with other base station 105, and may include a controller or scheduler for controlling communications with UEs 115 in cooperation with other base stations 105. For example, the inter-station communications manager 1145 may coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-station communications manager 1145 may provide an X2 interface within an LTE/LTE-A wireless communication network technology to provide communication between base stations 105.

The code 1135 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications. The code 1135 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 1135 may not be directly executable by the processor 1140 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.

FIG. 12 shows a flowchart illustrating a method 1200 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The operations of method 1200 may be implemented by a UE 115, a UE 215, a UE 315 or their components as described herein. For example, the operations of method 1200 may be performed by a communications manager as described with reference to FIGs. 4 through 7. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.

At 1205, the UE may receive a message including a set of PSD levels and corresponding location information for each PSD level in the set of PSD levels. The operations of 1205 may be performed according to the methods described herein. In some examples, aspects of the operations of 1205 may be performed by a message component as described with reference to FIGs. 4 through 7.

At 1210, the UE may determine a location of the UE. The operations of 1210 may be performed according to the methods described herein. In some examples, aspects of the operations of 1210 may be performed by a location component as described with reference to FIGs. 4 through 7.

At 1215, the UE may select a PSD level from the set of PSD levels for communications with a base station based on the location of the UE. The operations of 1215 may be performed according to the methods described herein. In some examples, aspects of the operations of 1215 may be performed by a PSD level component as described with reference to FIGs. 4 through 7.

At 1220, the UE may communicate with the base station based on the selected PSD level. The operations of 1220 may be performed according to the methods described herein. In some examples, aspects of the operations of 1220 may be performed by a PSD level component as described with reference to FIGs. 4 through 7.

FIG. 13 shows a flowchart illustrating a method 1300 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The operations of method 1300 may be implemented by a UE 115, a UE 215, a UE 315, or their components as described herein. For example, the operations of method 1300 may be performed by a communications manager as described with reference to FIGs. 4 through 7. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.

At 1305, the UE may receive a message including a set of PSD levels and corresponding location information for each PSD level in the set of PSD levels. 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 by a message component as described with reference to FIGs. 4 through 7.

At 1310, the UE may determine a location of the UE. The operations of 1310 may be performed according to the methods described herein. In some examples, aspects of the operations of 1310 may be performed by a location component as described with reference to FIGs. 4 through 7.

At 1315, the UE may transmit, to the base station, a message that indicates the location of the UE. The operations of 1315 may be performed according to the methods described herein. In some examples, aspects of the operations of 1315 may be performed by a location component as described with reference to FIGs. 4 through 7.

At 1320, the UE may select a PSD level from the set of PSD levels for communications with a base station based on the location of the UE. The operations of 1320 may be performed according to the methods described herein. In some examples, aspects of the operations of 1320 may be performed by a PSD level component as described with reference to FIGs. 4 through 7.

At 1325, the UE may communicate with the base station based on the selected PSD level. The operations of 1325 may be performed according to the methods described herein. In some examples, aspects of the operations of 1325 may be performed by a PSD level component as described with reference to FIGs. 4 through 7.

FIG. 14 shows a flowchart illustrating a method 1400 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The operations of method 1400 may be implemented by a base station 105, a base station 205, a base station 305, or their components as described herein. For example, the operations of method 1400 may be performed by a communications manager as described with reference to FIGs. 8 through 11. In some examples, a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, a base station may perform aspects of the functions described below using special-purpose hardware.

At 1405, the base station may determine a location of the base station or of a UE supported by the base station. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be performed by a location component as described with reference to FIGs. 8 through 11.

At 1410, the base station may select a PSD level from a set of PSD levels for communications with the UE based on the location. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be performed by a PSD level component as described with reference to FIGs. 8 through 11.

At 1415, the base station may transmit an indication of the selected PSD level to the UE. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be performed by an indication component as described with reference to FIGs. 8 through 11.

FIG. 15 shows a flowchart illustrating a method 1500 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The operations of method 1500 may be implemented by a base station 105, a base station 205, a base station 305, or their components as described herein. For example, the operations of method 1500 may be performed by a communications manager as described with reference to FIGs. 8 through 11. In some examples, a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, a base station may perform aspects of the functions described below using special-purpose hardware.

At 1505, the base station may determine a location of the base station or of a UE supported by the base station. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be performed by a location component as described with reference to FIGs. 8 through 11.

At 1510, the base station may select a PSD level from a set of PSD levels for communications with the UE based on the location. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be performed by a PSD level component as described with reference to FIGs. 8 through 11.

At 1515, the base station may select the PSD level based on information from a database including the set of PSD levels and corresponding location information for each of the set of PSD levels. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be performed by a PSD level component as described with reference to FIGs. 8 through 11.

At 1520, the base station may transmit an indication of the selected PSD level to the UE. The operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be performed by an indication component as described with reference to FIGs. 8 through 11.

FIG. 16 shows a flowchart illustrating a method 1600 that supports techniques for configuring PSD for wireless systems in accordance with aspects of the present disclosure. The operations of method 1600 may be implemented by a base station 105, a base station 205, a base station 305, or their components as described herein. For example, the operations of method 1600 may be performed by a communications manager as described with reference to FIGs. 8 through 11. In some examples, a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, a base station may perform aspects of the functions described below using special-purpose hardware.

At 1605, the base station may determine a location of the base station or of a UE supported by the base station. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be performed by a location component as described with reference to FIGs. 8 through 11.

At 1610, the base station may receive, from the UE, a message indicating the location of the UE. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed by a location component as described with reference to FIGs. 8 through 11.

At 1615, the base station may select a PSD level from a set of PSD levels for communications with the UE based on the location. The operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be performed by a PSD level component as described with reference to FIGs. 8 through 11.

At 1620, the base station may transmit an indication of the selected PSD level to the UE. The operations of 1620 may be performed according to the methods described herein. In some examples, aspects of the operations of 1620 may be performed by an indication component as described with reference to FIGs. 8 through 11.

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

Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications 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, as well as other systems and radio technologies not explicitly mentioned herein.

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 that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

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

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

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

As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ”

In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label, or other subsequent reference label.

The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration, ” and not “preferred” or “advantageous over other examples. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.

The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein, but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Claims

A method for wireless communications at a user equipment (UE) , comprising:

receiving a message comprising a set of power spectral density levels and corresponding location information for each power spectral density level in the set of power spectral density levels;

determining a location of the UE;

selecting a power spectral density level from the set of power spectral density levels for communications with a base station based at least in part on the location of the UE; and

communicating with the base station based at least in part on the selected power spectral density level.
The method of claim 1, further comprising:

transmitting, to the base station, a message that indicates the location of the UE.
The method of claim 1, further comprising:

transmitting, to the base station, an indication of the selected power spectral density level selected by the UE.
The method of claim 1, further comprising:

receiving, from the base station, an indication of a second power spectral density level for communications with the base station, the second power spectral density level different from the selected power spectral density level; and

transmitting an uplink message to the base station based at least in part on the selected power spectral density level independent of the second power spectral density level.
The method of claim 4, wherein receiving the indication of the second power spectral density level comprises:

receiving, from the base station, remaining minimum system information that includes the second power spectral density level.
The method of claim 4, wherein receiving the indication of the second power spectral density level comprises:

receiving an upper limit corresponding to the second power spectral density level or a lower limit corresponding to the second power spectral density level.
The method of claim 1, further comprising:

transmitting a bandwidth part reconfiguration message based at least in part on the selected power spectral density level being below a threshold.
The method of claim 7, wherein the bandwidth part reconfiguration message corresponds to one of an uplink bandwidth part or a downlink bandwidth part.
The method of claim 1, further comprising:

transmitting a wideband control channel to the base station based at least in part on the selected power spectral density level being below a threshold.
The method of claim 9, wherein the wideband control channel comprises a wideband physical uplink control channel (PUCCH) .
The method of claim 1, further comprising:

receiving, from the base station, location information for the UE, wherein determining the location of the UE is based at least in part on the received location information.
The method of claim 1, further comprising:

receiving the message from the base station or a core network node, wherein the message includes information from a database comprising the set of power spectral density levels and corresponding location information for each power spectral density level in the set of power spectral density levels.
The method of claim 1, further comprising:

storing the database at the UE;

determining an updated location of the UE;

selecting a second power spectral density level from the stored message based at least in part on the updated location of the UE; and

transmitting an uplink message in accordance with the second power spectral density level.
A method for wireless communications at a base station, comprising:

determining a location of the base station or of a user equipment (UE) supported by the base station;

selecting a power spectral density level from a set of power spectral density levels for communications with the UE based at least in part on the location; and

transmitting an indication of the selected power spectral density level to the UE.
The method of claim 14, wherein selecting the power spectral density level further comprises:

selecting the power spectral density level based at least in part on information from a database comprising the set of power spectral density levels and corresponding location information for each of the set of power spectral density levels.
The method of claim 15, further comprising:

transmitting information from the database to the UE.
The method of claim 15, further comprising:

receiving the information from the database from a core network node or a second base station.
The method of claim 14, further comprising:

receiving, from the UE, a message indicating the location of the UE.
The method of claim 18, wherein selecting the power spectral density level comprises:

selecting the power spectral density level that corresponds to the location of the UE based at least in part on the message.
The method of claim 18, further comprising:

receiving, after transmitting the indication of the selected power spectral density level, an uplink message from the UE in accordance with a second power spectral density level different from the selected power spectral density level, wherein the second power spectral density level corresponds to the location of the UE.
The method of claim 20, further comprising:

receiving, before receiving the uplink message, a second message from the UE that indicates the second power spectral density level.
The method of claim 18, further comprising:

transmitting, after transmitting the indication of the selected power spectral density level, a downlink message to the UE in accordance with a second power spectral density level different from the selected power spectral density level, wherein the second power spectral density level corresponds to the location of the UE.
The method of claim 18, further comprising:

communicating with the UE according to a second power spectral density level that corresponds to the location of the UE for a threshold duration of time.
The method of claim 14, wherein transmitting the indication of the selected power spectral density level comprises:

transmitting an upper limit corresponding to the selected power spectral density level or a lower limit corresponding to the selected power spectral density level.
The method of claim 14, further comprising:

transmitting system information to the UE, wherein the indication of the selected power spectral density level is included in the system information.
The method of claim 25, wherein the system information comprises remaining minimum system information and the indication of the selected power spectral density level is included in the remaining minimum system information.
The method of claim 14, further comprising:

transmitting a downlink message that indicates a bandwidth part configuration for the UE based at least in part on the selected power spectral density level.
The method of claim 27, wherein the bandwidth part configuration is associated with an uplink bandwidth part or a downlink bandwidth part.
The method of claim 14, further comprising:

transmitting a downlink message that indicates a control channel configuration for the UE based at least in part on the selected power spectral density level.
The method of claim 29, wherein the control channel configuration is associated with a wideband uplink control channel for the UE.
The method of claim 14, wherein selecting the power spectral density level comprises:

selecting the power spectral density level that corresponds to the location of the base station.
The method of claim 14, further comprising:

receiving, after transmitting the indication of the selected power spectral density level, an uplink message from the UE in accordance with the selected power spectral density level.
The method of claim 14, further comprising:

transmitting, after transmitting the indication of the selected power spectral density level, a downlink message to the UE in accordance with the selected power spectral density level.
An apparatus for wireless communications at a user equipment (UE) , comprising:

a processor,

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

receive a message comprising a set of power spectral density levels and corresponding location information for each power spectral density level in the set of power spectral density levels;

determine a location of the UE;

select a power spectral density level from the set of power spectral density levels for communications with a base station based at least in part on the location of the UE; and

communicate with the base station based at least in part on the selected power spectral density level.
An apparatus for wireless communications at a base station, comprising:

a processor,

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

determine a location of the base station or of a user equipment (UE) supported by the base station;

select a power spectral density level from a set of power spectral density levels for communications with the UE based at least in part on the location; and

transmit an indication of the selected power spectral density level to the UE.
An apparatus for wireless communications at a user equipment (UE) , comprising:

means for receiving a message comprising a set of power spectral density levels and corresponding location information for each power spectral density level in the set of power spectral density levels;

means for determining a location of the UE;

means for selecting a power spectral density level from the set of power spectral density levels for communications with a base station based at least in part on the location of the UE; and

means for communicating with the base station based at least in part on the selected power spectral density level.
An apparatus for wireless communications at a base station, comprising:

means for determining a location of the base station or of a user equipment (UE) supported by the base station;

means for selecting a power spectral density level from a set of power spectral density levels for communications with the UE based at least in part on the location; and

means for transmitting an indication of the selected power spectral density level to the UE.
A non-transitory computer-readable medium storing code for wireless communications at a user equipment (UE) , the code comprising instructions executable by a processor to:

receive a message comprising a set of power spectral density levels and corresponding location information for each power spectral density level in the set of power spectral density levels;

determine a location of the UE;

select a power spectral density level from the set of power spectral density levels for communications with a base station based at least in part on the location of the UE; and

communicate with the base station based at least in part on the selected power spectral density level.
A non-transitory computer-readable medium storing code for wireless communications at a base station, the code comprising instructions executable by a processor to:

determine a location of the base station or of a user equipment (UE) supported by the base station;

select a power spectral density level from a set of power spectral density levels for communications with the UE based at least in part on the location; and

transmit an indication of the selected power spectral density level to the UE.