Method and apparatus for in-band transmit interference management

Abstract

Methods, systems, and apparatus for wireless communications are described. A base station may determine a transmission mask (e.g., an in-band transmission (IBE) mask) for a user equipment (UE), which may be determined based on a total number of UEs scheduled by the base station for uplink transmissions during the same transmission time interval (TTI). The base station may transmit downlink control information (DCI) indicating the transmission mask to the UE. The base station may additionally transmit to the UE a grant to allocate resources for the UE based on a location of the UE relative to other UEs served by the base station. The UE may receive the DCI and may map the transmission mask to a maximum power reduction (MPR). Based on the MPR, the UE may determine a transmit power and may transmit an uplink transmission to the base station based on the transmit power and the DCI.

Description

[0001] introduction

[0002] This application claims priority to and the benefit of U.S. Patent Application No. 16 / 218,258, filed in the U.S. Patent and Trademark Office on December 12, 2018, the entire contents of which are incorporated herein as if fully set forth below and for all applicable purposes.

[0003] background

[0004] The present disclosure relates generally to wireless communications and, more particularly, to in-band emission (IBE) interference management.

[0005] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, etc. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (such as long term evolution (LTE) systems, advanced LTE (LTE-A) systems, or LTE-A Pro systems), and fifth generation (5G) systems that may be referred to as new radio (NR) systems. These systems may use various technologies, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include several base stations or network access nodes, each of which simultaneously supports the communication of multiple communication devices, which may be referred to as user equipment (UE).

[0006] In some cases, a base station may schedule resources for several UEs. Transmissions sent on scheduled resources may interfere with other transmissions occurring during overlapping or the same time interval. Interference between transmissions may limit the ability of a receiving device (whether a base station or a UE) to decode the transmission.

[0007] Overview

[0008] The described technology relates to improved methods, systems, devices and apparatuses that support in-band emission (IBE) interference management. In general, the described technology provides a base station with determining a transmission mask (e.g., an IBE mask) for a UE. During the same transmission time interval (TTI), the base station can determine the transmission mask based on the total number of UEs (which may include the UE) scheduled by the base station for uplink transmission. The transmission mask can be proportional to the number of UEs. The base station can then transmit downlink control information (DCI) indicating the transmission mask to the UE. The base station can additionally transmit a grant to allocate resources to the UE. The grant can be based on the position of the UE relative to other UEs served by the base station. The UE can receive the DCI and can map the transmission mask to a maximum power reduction (MPR). Based on the MPR, the UE can determine the transmit power and can transmit an uplink transmission to the base station based on the transmit power and the resources allocated to the UE by the DCI.

[0009] A method of wireless communication at a UE is described. The method may include: receiving downlink control information from a base station indicating an IBE mask for the UE; mapping the indicated IBE mask to a maximum power reduction; determining a transmit power for the UE based on the maximum power reduction; and transmitting an uplink transmission to the base station based on the determined transmit power and the received downlink control information.

[0010] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: receive downlink control information indicating an IBE mask for the UE from a base station; map the indicated IBE mask to a maximum power reduction; determine a transmit power for the UE based on the maximum power reduction; and transmit an uplink transmission to the base station based on the determined transmit power and the received downlink control information.

[0011] Another apparatus for wireless communication at a UE is described. The apparatus may include means for receiving downlink control information from a base station indicating an IBE mask for the UE; mapping the indicated IBE mask to a maximum power reduction; determining a transmit power for the UE based on the maximum power reduction; and transmitting an uplink transmission to the base station based on the determined transmit power and the received downlink control information.

[0012] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor for: receiving downlink control information indicating an IBE mask for the UE from a base station; mapping the indicated IBE mask to a maximum power reduction; determining a transmit power for the UE based on the maximum power reduction; and transmitting an uplink transmission to the base station according to the determined transmit power and the received downlink control information.

[0013] In some examples of the methods, devices, and non-transitory computer-readable media described herein, receiving downlink control information may include operations, features, devices, or instructions for the following actions: receiving downlink control information indicating an IBE mask, the IBE mask being based on the number of UEs scheduled by the base station for uplink transmission during the same transmission time interval.

[0014] In some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein, the indicated IBE mask may be proportional to the number of UEs scheduled for uplink transmission during the same transmission time interval by the base station.

[0015] In some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein, receiving downlink control information may include operations, features, apparatus, or instructions for the following actions: receiving downlink control information indicating an IBE mask, the IBE mask being based on an estimate of an IBE interference level within a transmission time interval of an uplink transmission, the IBE interference level being proportional to the number of UEs scheduled by the base station for uplink transmission during the transmission time interval.

[0016] In some examples of the methods, devices, and non-transitory computer-readable media described herein, mapping an indicated IBE mask to a maximum power reduction may include operations, features, devices, or instructions for mapping an indicated IBE mask to a maximum power reduction according to a predetermined mapping.

[0017] In some examples of the methods, devices, and non-transitory computer-readable media described herein, receiving downlink control information may further include operations, features, means, or instructions for receiving a resource grant for an uplink transmission.

[0018] In some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein, a resource grant indicates frequency resources allocated for uplink transmission based on a position of the UE relative to one or more other UEs.

[0019] In some examples of the methods, devices, and non-transitory computer-readable media described herein, determining the transmit power for a UE may include operations, features, devices, or instructions for the following actions: determining the transmit power for the UE based on a maximum output power and a maximum power reduction.

[0020] In some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein, the uplink transmission comprises a multi-user uplink transmission.

[0021] A method of wireless communication at a base station is described. The method may include determining an IBE mask for a UE that is one of a set of UEs to be scheduled by the base station for uplink transmission during a transmission time interval, and transmitting downlink control information to the UE indicating the determined IBE mask for uplink transmission by the UE.

[0022] An apparatus for wireless communication at a base station is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: determine an IBE mask for a UE that is one of a set of UEs to be scheduled by the base station for uplink transmission during a transmission time interval, and transmit downlink control information to the UE indicating the determined IBE mask for uplink transmission by the UE.

[0023] Another apparatus for wireless communication at a base station is described. The apparatus may include means for determining an IBE mask for a UE that is one of a set of UEs to be scheduled by the base station for uplink transmission during a transmission time interval, and transmitting downlink control information to the UE indicating the determined IBE mask for uplink transmission by the UE.

[0024] A non-transitory computer-readable medium storing code for wireless communication at a base station is described. The code may include instructions executable by a processor for the following operations: determining an IBE mask for a UE that is one of a set of UEs to be scheduled by the base station for uplink transmission during a transmission time interval, and transmitting downlink control information to the UE indicating the determined IBE mask for uplink transmission by the UE.

[0025] In some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein, determining an IBE mask for a UE may include operations, features, apparatus, or instructions for the following actions: identifying the number of UEs in a set of UEs to be scheduled by a base station during a transmission time interval, and determining an IBE mask for the UE based on the identified number.

[0026] In some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein, the IBE mask may be proportional to the number of UEs of the set of UEs scheduled by the base station during the transmission time interval.

[0027] In some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein, determining an IBE mask for a UE may include operations, features, apparatus, or instructions for the following actions: estimating an IBE interference level during a transmission time interval, the IBE interference level being proportional to the number of UEs in a set of UEs scheduled by the base station for uplink transmission during the transmission time interval, and determining an IBE mask for the UE based on the estimated IBE interference level.

[0028] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: allocating frequency resources to the UE based on the position of the UE relative to at least one of the set of UEs, wherein the transmitted downlink control information indicates the allocated frequency resources.

[0029] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: identifying a set of UEs associated with a receive beam of a base station from the set of UEs, the UE being one of the UEs in the set of UEs, and allocating frequency resources to the UE that are non-contiguous with frequency resources allocated to any other UE in the set of UEs.

[0030] In some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein, each UE in the set of UEs may be allocated frequency resources that may be non-contiguous with frequency resources allocated to any other UE in the set of UEs.

[0031] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying that the UE and a second UE in the set of UEs can be separated by an angular distance that can be less than or equal to a predetermined threshold angular distance, and allocating a first frequency resource to the UE that can be non-contiguous with a second frequency resource allocated to the second UE based on the identification.

[0032] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: identifying that the UE and a second UE in the set of UEs can be separated by an angular distance that can be greater than or equal to a predetermined threshold angular distance, and allocating a first frequency resource to the UE that can be adjacent to a second frequency resource allocated to the second UE based on the identification. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 An example of a wireless communication system supporting in-band emission (IBE) interference management in accordance with aspects of the present disclosure is illustrated.

[0035] Figure 2 An example of a wireless communication system supporting IBE interference management in accordance with aspects of the present disclosure is illustrated.

[0036] Figure 3 An example of a transmission scheme supporting IBE interference management in accordance with aspects of the present disclosure is illustrated.

[0037] Figure 4 An example of a process flow supporting IBE interference management in accordance with aspects of the present disclosure is illustrated.

[0038] Figure 5 and 6 A block diagram of a device supporting IBE interference management according to aspects of the present disclosure is shown.

[0039] Figure 7 A block diagram of a communications manager supporting IBE interference management in accordance with aspects of the present disclosure is shown.

[0040] Figure 8 A diagram of a system including a device supporting IBE interference management in accordance with aspects of the present disclosure is shown.

[0041] Fig. 9 and 10 A block diagram of a device supporting IBE interference management according to aspects of the present disclosure is shown.

[0042] Fig.11 A block diagram of a communications manager supporting IBE interference management in accordance with aspects of the present disclosure is shown.

[0043] Fig.12 A diagram of a system including a device supporting IBE interference management in accordance with aspects of the present disclosure is shown.

[0044] Figures 13 to 17 A flow chart illustrating a method of supporting IBE interference management according to aspects of the present disclosure is shown.

[0045] Detailed Description

[0046] Transmissions from user equipment (UE) to a base station may be associated with an output power value. In some cases, the output power value may be limited by one or more emission masks. The UE may use such emission masks to limit or mitigate various parameters associated with interference, such as adjacent channel leakage ratio (ACLR), spectrum emission mask (SEM), error vector magnitude (EVM), and in-band emission (IBE). The IBE may be calculated as the ratio of the UE output power in an unallocated resource block (RB) (e.g., in one time slot, subframe, or other time interval) to the UE output power in an allocated RB (e.g., in the same time slot, subframe, or other time interval). The power in such unallocated RBs may be generated by odd-order nonlinearities of a power amplifier (PA). Interference from IBE may be significant in a coverage area with a high density of UEs when the base station is serving multiple UEs simultaneously with one or more beams, when the UEs are transmitting in the same frequency band but in separate frequency resources of the frequency band, or some combination of these scenarios.

[0047] In some cases, IBE interference can be mitigated by scheduling uplink transmissions from UEs based on the location of the UEs relative to each other, the base station performing the scheduling, and / or the coverage of the base station performing the scheduling. For example, the UEs can be scheduled based on whether they form a spatially adjacent UE pair or a spatially isolated UE pair with other UEs to be scheduled. A spatially adjacent UE pair may refer to two UEs that are within a threshold distance relative to each other, have a path loss between them that is less than a threshold path loss value, have an angular distance between them relative to a serving base station that is less than an angular distance threshold, are both served by the same serving beam of the serving base station (e.g., the UEs may be co-beam UEs), are each served by individual beams that interfere with each other to a greater than a threshold degree, or are in a combination of these situations. A spatially isolated UE pair may refer to two UEs that are outside a threshold distance from each other, have a path loss between them that is greater than a threshold path loss value, have an angular distance between them relative to a serving base station that is greater than an angular distance threshold, are served by separate serving beams and have an interference level between these beams that is less than a threshold, or are in a combination of these situations. In general, the base station may schedule the uplink resources of two UEs constituting a spatially adjacent UE pair on non-contiguous frequency resources, which may reduce IBE interference from uplink transmission of one UE to resources of uplink transmission of another UE. Additionally, the base station may schedule the uplink resources of UEs constituting a spatially isolated UE pair on contiguous frequency resources.

[0048] Additionally or alternatively, IBE interference may be mitigated by adjusting a transmit mask (e.g., an IBE mask) based on the number of UEs to be scheduled (e.g., the number of UEs to be scheduled for uplink transmission). For example, a base station may select an IBE mask for each UE to be scheduled and may transmit the mask or information related to the mask to the UE. The UE may determine a maximum power reduction (MPR) based on the IBE mask and may reduce its maximum output power accordingly to determine its transmit power. In some cases, the transmit mask may be described in terms of ACLR, SEM, EVM, and / or IBE, where IBE may be the most stringent and may be calculated as shown in Equation 1:

[0049]

[0050] In some cases, MPR may reduce interference to other transmitting devices, such as IBE interference when multiple UEs transmit in the uplink during the same time slot.

[0051] Various aspects of the present disclosure are initially described in the context of wireless communication systems. Additional wireless communication systems, transmission schemes, and process flow examples are subsequently provided to illustrate additional aspects of the present disclosure. Various aspects of the present disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flow charts related to IBE interference management.

[0052] Figure 1 An example of a wireless communication system 100 supporting IBE interference management according to various aspects of the present disclosure is illustrated. The wireless communication system 100 includes a base station 105, a UE 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an advanced LTE (LTE-A) network, an LTE-A Pro network, or a new radio (NR) network. In some cases, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low latency communications, or communications with low-cost and low-complexity devices.

[0053] The base station 105 may communicate wirelessly with the UE 115 via one or more base station antennas. The base station 105 described herein may include or may be referred to by those skilled in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a Home Node B, a Home Evolved Node B, or some other suitable terminology. The wireless communication system 100 may include different types of base stations 105 (e.g., macro cell base stations or small cell base stations). The UE 115 described herein may be able to communicate with various types of base stations 105 and network equipment (including macro eNBs, small cell eNBs, gNBs, relay base stations, etc.).

[0054] Each base station 105 may be associated with a particular geographic coverage area 110 in which it supports communications with various UEs 115. Each base station 105 may provide communications coverage for the respective geographic coverage area 110 via a communications link 125, and the communications link 125 between the base station 105 and the UE 115 may utilize one or more carriers. The communications link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. Downlink transmissions may also be referred to as forward link transmissions, and uplink transmissions may also be referred to as reverse link transmissions.

[0055] The geographic coverage area 110 of the base station 105 may be divided into sectors that constitute a portion of the geographic coverage area 110, and each sector may be associated with a cell. For example, each base station 105 may provide communication coverage for a macro cell, a small cell, a hotspot, or other types of cells, or various combinations thereof. In some examples, the base station 105 may be mobile and thus provide communication coverage for a mobile geographic coverage area 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, and overlapping geographic coverage areas 110 associated with different technologies may be supported by the same base station 105 or different base stations 105. The wireless communication system 100 may include, for example, a heterogeneous LTE / LTE-A / LTE-A Pro or NR network, in which different types of base stations 105 provide coverage for various geographic coverage areas 110.

[0056] The term "cell" refers to a logical communication entity for communicating with base station 105 (e.g., on a carrier), and may be associated with an identifier to distinguish adjacent cells operating via the same or different carriers (e.g., physical cell identifier (PCID), virtual cell identifier (VCID)). In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types that may provide access to different types of devices (e.g., machine type communication (MTC), narrowband Internet of Things (NB-IoT), enhanced mobile broadband (eMBB), or others). In some cases, the term "cell" may refer to a portion of a geographic coverage area 110 (e.g., a sector) on which the logical entity operates.

[0057] Each UE 115 can be dispersed throughout the wireless communication system 100, and each UE 115 can be stationary or mobile. UE 115 can also be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable term, wherein "device" can also be referred to as a unit, a station, a terminal, or a client. UE 115 can also be a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 can also refer to a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or an MTC device, etc., which can be implemented in various items (such as electrical appliances, vehicles, meters, etc.).

[0058] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay the information to a central server or application, which may utilize the information or present the information to a person interacting with the program or application. Some UEs 115 may be designed to collect information or implement automated behavior of machines. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, health care monitoring, field survival monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial charging.

[0059] Some UEs 115 may be configured to employ a reduced power consumption mode of operation, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but not simultaneous transmission and reception). In some examples, half-duplex communication may be performed with a reduced peak rate. Other power saving techniques for UE 115 include entering a power saving "deep sleep" mode when not engaged in active communications, or operating over a limited bandwidth (e.g., in accordance with narrowband communications). In some cases, UE 115 may be designed to support critical functions (e.g., mission critical functions), and the wireless communication system 100 may be configured to provide ultra-reliable communications for these functions.

[0060] In some cases, UE 115 may also be able to communicate directly with other UE 115 (e.g., using a peer-to-peer (P2P) or device-to-device (D2D) protocol). One or more UEs in a group of UEs 115 utilizing D2D communication may be within the geographic coverage area 110 of the base station 105. Other UEs 115 in this group may be outside the geographic coverage area 110 of the base station 105, or may not be able to receive transmissions from the base station 105 for other reasons. In some cases, each group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system, in which each UE 115 transmits to each other UE 115 in the group. In some cases, the base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without involving the base station 105.

[0061] The base stations 105 may communicate with the core network 130 and with each other. For example, the base stations 105 may interface with the core network 130 via a backhaul link 132 (e.g., via S1, N2, N3, or other interfaces). The base stations 105 may communicate with each other directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130) on a backhaul link 134 (e.g., via X2, Xn, or other interfaces).

[0062] The core network 130 may provide user authentication, access grant, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC), which may include at least one mobility management entity (MME), at least one serving gateway (S-GW), and at least one packet data network (PDN) gateway (P-GW). The MME may manage non-access layer (e.g., control plane) functions such as mobility, authentication, and bearer management of UEs 115 served by base stations 105 associated with the EPC. User IP packets may be delivered through the S-GW, which itself may be connected to the P-GW. The P-GW may provide IP address allocation and other functions. The P-GW may be connected to network operator IP services. Operator IP services may include access to the Internet, an intranet, an IP multimedia subsystem (IMS), or packet switched (PS) streaming services.

[0063] At least some network devices (such as base stations 105) may include subcomponents, such as access network entities, which may be examples of access node controllers (ANCs). Each access network entity may communicate with each UE 115 through a number of other access network transport entities, which may be referred to as radio heads, smart radio heads, or transmission / reception points (TRPs). In some configurations, the various functions of each access network entity or base station 105 may be distributed across various network devices (e.g., radio heads and access network controllers) or merged into a single network device (e.g., base station 105).

[0064] The wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). In general, the 300 MHz to 3 GHz region is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths are in the range of from about 1 decimeter to 1 meter long. UHF waves can be blocked or redirected by buildings and environmental features. However, these waves can penetrate various structures sufficiently for macro cells to provide services to UEs 115 located indoors. Transmission of UHF waves can be associated with smaller antennas and shorter ranges (e.g., less than 100 km) compared to transmission using lower frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.

[0065] The wireless communication system 100 may also operate in the Super High Frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as centimeter bands. The SHF region includes frequency bands that may be opportunistically used by devices that may be able to tolerate interference from other users, such as the 5 GHz Industrial, Scientific, and Medical (ISM) band.

[0066] The wireless communication system 100 may also operate in the extremely high frequency (EHF) division of the spectrum (e.g., from 30 GHz to 300 GHz), which is also referred to as the millimeter band. In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antenna of the corresponding device may be even smaller and more closely spaced than the UHF antenna. In some cases, this may facilitate the use of antenna arrays within the UE 115. However, the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. The technology disclosed herein may be adopted across transmissions using one or more different frequency divisions, and the use of frequency bands specified across these frequency divisions may differ by country or regulatory agency.

[0067] In some cases, the wireless communication system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 may employ license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band (such as a 5 GHz ISM band). When operating in an unlicensed radio frequency spectrum band, wireless devices (such as base stations 105 and UE 115) may employ a listen-before-talk (LBT) procedure to ensure that the frequency channel is clear before transmitting data. In some cases, operations in unlicensed bands may be based on carrier aggregation configuration (e.g., LAA) in coordination with component carriers operating in licensed bands. Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, peer-to-peer transmissions, or a combination of these. Duplexing in unlicensed spectrum may be based on frequency division duplexing (FDD), time division duplexing (TDD), or a combination of the two.

[0068] In some examples, the base station 105 or the 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) communication, or beamforming. For example, the wireless communication system 100 may use a transmission scheme between a transmitting device (e.g., the base station 105) and a receiving device (e.g., the UE 115), wherein the transmitting device is equipped with multiple antennas and the receiving device is equipped with one or more antennas. MIMO communication may employ multipath signal propagation to increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers, which may be referred to as spatial multiplexing. For example, the transmitting device may transmit multiple signals via different antennas or different antenna combinations. Similarly, the receiving device may receive multiple signals via different antennas or different antenna combinations. Each of these 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. Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to the same receiving device, and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0069] 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 or a UE 115) to shape or direct an antenna beam (e.g., a transmit beam or a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals communicated via antenna elements of an antenna array so that signals propagating at a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals communicated via antenna elements may include the transmitting device or the receiving device applying predetermined or calculated amplitude and phase offsets to signals carried via each antenna element associated with the device. Adjustments associated with each antenna element may be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0070] In one example, the base station 105 may use multiple antennas or antenna arrays to perform beamforming operations for directional communication with the UE 115. For example, some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by the base station 105 in different directions, which may include a signal being transmitted according to different beamforming weight sets associated with different transmission directions. The transmissions in different beam directions may be used (e.g., by the base station 105 or a receiving device, such as the UE 115) to identify the beam direction used by the base station 105 for subsequent transmission and / or reception.

[0071] Some signals, such as data signals associated with a particular recipient device, may be transmitted by base station 105 in a single beam direction (e.g., a direction associated with a recipient device, such as UE 115). In some examples, a beam direction associated with transmissions along a single beam direction may be determined based at least in part on signals transmitted in different beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions, and UE 115 may report to base station 105 an indication of the signals received by it with the highest signal quality or other acceptable signal quality. Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may use similar techniques for transmitting signals multiple times in different directions (e.g., for identifying a beam direction used by UE 115 for subsequent transmission or reception) or for transmitting signals in a single direction (e.g., for transmitting data to a recipient device).

[0072] A receiving device (e.g., UE 115, which may be an example of a mmW receiving device) may try multiple receive beams when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105. For example, the receiving device may try multiple receive directions by receiving via different antenna subarrays, processing received signals according to different antenna subarrays, receiving according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, or 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 beams or receive directions. In some examples, the receiving device may use a single receive beam to receive along a single beam direction (e.g., when receiving a data signal). The single receive beam may be aligned on a beam direction determined at least in part based on listening according to different receive beam directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio, or other acceptable signal quality based at least in part on listening according to multiple beam directions).

[0073] In some cases, the antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays that may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some cases, the antennas or antenna arrays associated with a base station 105 may be located at different geographic locations. A base station 105 may have an antenna array having several rows and columns of antenna ports that the base station 105 may use to support beamforming for communications with a UE 115. Likewise, a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.

[0074] In some cases, the wireless communication system 100 can be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication of the bearer or packet data convergence protocol (PDCP) layer can be IP-based. The radio link control (RLC) layer can perform packet segmentation and reassembly to communicate on the logical channel. The media access control (MAC) layer can perform priority handling and multiplex logical channels into transport channels. The MAC layer can also use hybrid automatic repeat request (HARQ) to provide retransmission of the MAC layer, thereby improving link efficiency. In the control plane, the radio resource control (RRC) protocol layer can provide the establishment, configuration and maintenance of the RRC connection of the radio bearer supporting user plane data between the UE 115 and the base station 105 or the core network 130. In the physical layer, the transport channel can be mapped to the physical channel.

[0075] In some cases, UE 115 and base station 105 may support retransmission of data to increase the likelihood that the data is successfully received. HARQ feedback is a technique that increases the likelihood of correctly receiving data on communication link 125. HARQ may include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve the throughput of the MAC layer in poor radio conditions (e.g., signal-to-noise ratio conditions). In some cases, a wireless device may support simultaneous slot HARQ feedback, where the device may provide HARQ feedback in a specific time slot for data received in a previous symbol in the time slot. In other cases, the device may provide HARQ feedback in a subsequent time slot or according to some other time interval.

[0076] The time interval in LTE or NR can be represented by a basic time unit (which may refer to a sampling period T for example). s =1 / 30720000 seconds). The time intervals of the communication resources may be organized according to radio frames each having a duration of 10 milliseconds (ms), where the frame period may be expressed as T f =307200Ts . A radio frame may be identified by a system frame number (SFN) ranging from 0 to 1023. Each frame may include 10 subframes numbered from 0 to 9, and each subframe may have a duration of 1 ms. A subframe may be further divided into 2 slots, each slot having a duration of 0.5 ms, and each slot may contain 6 or 7 modulation symbol periods (e.g., depending on the length of a cyclic prefix prepended to each symbol period). Excluding the cyclic prefix, each symbol period may contain 2048 sampling periods. In some cases, a subframe may be the minimum scheduling unit of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In other cases, the minimum scheduling unit of the wireless communication system 100 may be shorter than a subframe or may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI) or in a selected component carrier using sTTI).

[0077] In some wireless communication systems, a time slot may be further divided into a plurality of mini-slots containing one or more symbols. In some instances, a symbol of a mini-slot or a mini-slot may be the minimum scheduling unit. For example, each symbol may vary in duration depending on the subcarrier spacing or the operating frequency band. Further, some wireless communication systems may implement time slot aggregation, wherein a plurality of time slots or mini-slots are aggregated together and used for communication between UE 115 and base station 105.

[0078] The term "carrier" refers to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communications on the communication link 125. For example, a carrier of the communication link 125 may include a portion of a radio frequency spectrum band that operates according to a physical layer channel for a given radio access technology. Each physical layer channel may carry user data, control information, or other signaling. A carrier may be associated with a predefined frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid for discovery by a UE 115. A carrier may be downlink or uplink (e.g., in FDD mode), or configured to carry downlink communications and uplink communications (e.g., in TDD mode). In some examples, a signal waveform transmitted on a carrier may include multiple subcarriers (e.g., using a multi-carrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)).

[0079] For different radio access technologies (e.g., LTE, LTE-A, LTE-A Pro, NR), the organizational structure of the carrier can be different. For example, the communication on the carrier can be organized according to TTIs or time slots, each of which can include user data and control information or signaling to support decoding of the user data. The carrier can also include dedicated acquisition signaling (e.g., synchronization signals or system information, etc.) and control signaling to coordinate the operation of the carrier. In some examples (e.g., in a carrier aggregation configuration), the carrier may also have acquisition signaling or control signaling to coordinate the operation of other carriers.

[0080] Physical channels may be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on a downlink carrier, for example, using a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. In some examples, control information transmitted in a physical control channel may be distributed in a cascaded manner between different control regions (e.g., between a common control region or a common search space and one or more UE-specific control regions or UE-specific search spaces).

[0081] A carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of several predetermined bandwidths of a carrier for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz). In some examples, each served UE 115 may be configured to operate on part or all of the carrier bandwidth. In other examples, some UEs 115 may be configured to operate using a narrowband protocol type associated with a predefined portion or range (e.g., a set of subcarriers or RBs) within a carrier (e.g., an "in-band" deployment of a narrowband protocol type).

[0082] In a system using MCM technology, a resource element may include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme). Thus, the more resource elements received by UE 115 and the higher the order of the modulation scheme, the higher the data rate of UE 115 can be. In a MIMO system, wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and space resources (e.g., space layers), and the use of multiple space layers may further increase the data rate of communication with UE 115.

[0083] A device (e.g., base station 105 or UE 115) of wireless communication system 100 may have a hardware configuration that supports communication on a particular carrier bandwidth, or may be configurable to support communication on one of a set of carrier bandwidths. In some examples, wireless communication system 100 may include base stations 105 and / or UEs 115 that support simultaneous communication via carriers associated with more than one different carrier bandwidths.

[0084] The wireless communication system 100 may support communication with the UE 115 on multiple cells or carriers, a feature that may be referred to as carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both FDD and TDD component carriers.

[0085] In some cases, the wireless communication system 100 may utilize an enhanced component carrier (eCC). An eCC may be characterized by one or more features including a wider carrier or frequency channel bandwidth, a shorter symbol duration, a shorter TTI duration, or a modified control channel configuration. In some cases, an eCC may be associated with a carrier aggregation configuration or a dual connectivity configuration (e.g., when multiple serving cells have suboptimal or non-ideal backhaul links). An eCC may also be configured for use in an unlicensed spectrum or a shared spectrum (e.g., where more than one operator is allowed to use the spectrum). An eCC characterized by a wide carrier bandwidth may include one or more segments that may be utilized by a UE 115 that is not capable of monitoring the entire carrier bandwidth or is otherwise configured to use a limited carrier bandwidth (e.g., to save power).

[0086] In some cases, an eCC may utilize a different symbol duration than other component carriers, which may include using a reduced symbol duration compared to the symbol duration of other component carriers. A shorter symbol duration may be associated with an increased spacing between adjacent subcarriers. A device utilizing an eCC (such as a UE 115 or a base station 105) may transmit a wideband signal (e.g., according to a frequency channel or carrier bandwidth of 20, 40, 60, 80 MHz, etc.) with a reduced symbol duration (e.g., 16.67 microseconds). A TTI in an eCC may include one or more symbol periods. In some cases, the TTI duration (i.e., the number of symbol periods in a TTI) may be variable.

[0087] The wireless communication system 100 may be an NR system that may utilize any combination of licensed, shared, and unlicensed spectrum bands, etc. The flexibility of eCC symbol duration and subcarrier spacing may allow eCC to be used across multiple spectrums. In some examples, NR shared spectrum may improve spectrum utilization and spectrum efficiency, particularly through dynamic vertical (e.g., across frequency domain) and horizontal (e.g., across time domain) sharing of resources.

[0088] The wireless communication system 100 may support efficient techniques for implementing IBE interference management. For example, a base station 105 may determine an IBE mask for a UE 115, where the UE 115 is one of a set of UEs 115 to be scheduled by the base station for uplink transmission during a TTI. The UE 115 may receive downlink control information (DCI) indicating the IBE mask for the UE 115 from the base station 105. The UE 115 may map the indicated IBE mask to an MPR. The UE 115 may determine a transmit power for the UE 115 based on the MPR. The UE 115 may transmit an uplink transmission to the base station based on the determined transmit power and the received DCI.

[0089] Figure 2 An example of a wireless communication system 200 that supports IBE interference management according to aspects of the present disclosure is illustrated. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100. The wireless communication system 200 may include a base station 105-a and UEs 115-a, 115-b, and 115-c, which may be respectively as described herein with reference to Figure 1 An example of a base station 105 and a UE 115 is described. UE 115-a and 115-b may form a spatially adjacent UE pair. For example, UE 115-a and 115-b may be within a threshold distance relative to each other, the path loss between them may be less than a threshold path loss value, they may have a smaller angular distance relative to base station 105-a, both may be served by service beam 205-a of base station 105 (e.g., UE 115-a and 115-b may be co-beam UEs 115), or may be in a combination of these situations. At the same time, UE 115-c may form a spatially isolated UE pair with UE 115-a and UE 115-b. For example, UE 115-c may be outside a threshold distance from UE 115-a and / or 115-b, have a path loss with UE 115-a and / or 115-b greater than a threshold path loss value, have a larger angular distance with UE 115-a and / or 115-b relative to base station 105-a, may not be served by the same service beam 205 (e.g., UE 115-a and / or 115-b may be served by service beam 205-a, while UE 115-c may be served by service beam 205-b), or may be in a combination of these situations.

[0090] In some cases, the base station 105-a may schedule multiple UEs 115 (e.g., UEs 115-a, 115-b, and 115-c) on resources spanning the same TTI but different frequency resources for uplink transmission. The different frequency resources may or may not be in the same frequency band. In some cases, the interference associated with simultaneous uplink transmissions (e.g., IBE interference) may exceed a tolerable threshold. For example, the base station 105-a may operate in an environment with a high density of hot spots (e.g., a city block 210 with a large number of UEs 115) and may simultaneously serve multiple UEs 115 with one or more service beams 205 (e.g., service beams 205-a and 205-b). In a situation where multiple UEs 115 transmit simultaneously in the same frequency band but on different frequency resources, excessive interference (e.g., interference above a threshold, such as IBE interference) may limit effective communication between the base station 105-a and the multiple UEs 115.

[0091] When scheduled, UEs 115-a, 115-b, and 115-c may transmit to base station 105-a on respective frequency resources. If UEs 115 in spatially adjacent UE pairs (e.g., UE 115-a and UE 115-b) transmit at the same TTI, their transmissions may interfere with each other to a greater extent (e.g., associated with greater IBE interference) than UEs 115 in spatially isolated UE pairs (e.g., UE 115-a and UE 115-c and / or UE 115-b and UE 115-c). This increase in interference (which may become excessive) may be due to the close proximity of UEs 115 in spatially adjacent UE pairs relative to each other, which may be small enough to enable both UEs 115 in the spatially adjacent UE pairs to be served by a single service beam 205 (e.g., service beam 205-a). In general, IBE interference between UEs 115 scheduled in contiguous frequency resources (e.g., adjacent frequency resources or frequency resources that share a boundary) may be higher than IBE interference between UEs 115 separated by a frequency gap (which may include several frequency resources). Thus, if the UEs 115 transmit to the base station 105-a on the contiguous frequency resources in the same TTI, a larger amount of IBE interference may result, which may degrade system performance.

[0092] To mitigate interference, the base station 105-a may schedule UEs 115 based on a correlation between the frequency assignments of the UEs 115 and the locations of such UEs 115 within a cell or geographic coverage area 110 (e.g., geographic coverage area 110-a). For example, the base station 105-a may schedule UEs 115 based on whether the UEs 115 form a spatially adjacent UE pair or a spatially isolated UE pair with other UEs. More specifically, the base station 105-a may determine frequency resources for transmissions scheduled within the same TTI based on whether the UEs 115 form a spatially adjacent UE pair or a spatially isolated UE pair. For example, UEs 115 forming a spatially adjacent UE pair may be scheduled in non-contiguous frequency resources, and / or UEs 115 forming a spatially isolated UE pair may be scheduled in contiguous frequency resources. In some cases, a UE 115 that forms a spatially isolated UE pair (e.g., UE 115-a and UE 115-c and UE 115-b and UE 115-c) together with other UEs 115 that together form a spatially adjacent UE pair (e.g., UE 115-a and UE 115-b) may sandwich its frequency resources between the frequency resources of these other UEs 115.

[0093] For example, UE 115-c may not be in service beam 205-a, but UE 115-a and 115-b may be in service beam 205-a. In this way, UE 115-a and 115-c and UE 115-b and 115-c may constitute a spatially isolated UE pair, and UE 115-a and 115-b may constitute a spatially adjacent UE pair. In such a case, the frequency resources of UE 115-c that appear within the same TTI as the frequency resources of UE 115-a and 115-b may be between the frequency resources of UE 115-a and the frequency resources of UE 115-b. Frequency resources that are non-adjacent or non-adjacent to each other, such as the frequency resources of UE 115-a and 115-b in this example, may be referred to as frequency-isolated frequency resources. Frequency-isolated frequency resources may have one or more frequency resources between them that may not be allocated or allocated to other devices (e.g., UE 115-c) or used. In the case where the two UEs 115 are not a spatially isolated UE pair (e.g., when the two UEs 115 are spatially adjacent UE pairs), frequency isolation can effectively limit interference, and the spatial characteristics of the UEs 115 that are spatially isolated UE pairs can effectively limit interference. Accordingly, the base station 105-a can use multi-antenna beamforming or coupling loss information to achieve protection against interference.

[0094] In some cases, a UE 115 that forms a spatially isolated UE pair with other UEs 115 may still cause interference to transmissions from other UEs 115 when both transmissions are transmitted on the same TTI. For example, IBE interference may still occur between UEs 115 that form a spatially isolated UE pair but share contiguous frequency resources. In such cases, the base station 105-a may mitigate interference (e.g., IBE interference) by using appropriate beamforming weights along the service beam 205-b, which may reduce or at least partially eliminate interference from transmissions received along the service beam 205-a (by UEs 115-a and / or 115-b). The base station 105-a may additionally or alternatively mitigate such interference by using appropriate beamforming weights along the service beam 205-a, which may reduce or at least partially eliminate interference from transmissions received along the service beam 205-b (e.g., by UE 115-c). In either or both cases, zero-forcing beamforming may be used.

[0095] In some cases, interference (e.g., IBE interference) can be mitigated by adjusting the transmission mask (e.g., IBE mask) according to the number of UEs 115 to be scheduled. In one example, the base station 105-a can adjust a single transmission mask in proportion to the total number of UEs 115 served by the base station 105-a (e.g., 3 in this example), and all UEs 115 can use the same mask. In another example, the base station 105-a can have a different transmission mask for each service beam 205, where each transmission mask is selected in proportion to the total number of UEs 115 within a particular service beam 205. For example, a first transmission mask proportional to the number of UEs 115 within the service beam 205-a (e.g., 2 in this example) and a second transmission mask proportional to the number of UEs 115 within the service beam 205-b (e.g., 1 in this example) can be selected. Each UE 115 within service beam 205-a (e.g., UE 115-a and 115-b) can use the first transmission mask, and each UE 115 within service beam 205-b (e.g., UE 115-c) can use the second transmission mask. It should be noted that such methods can be applied to more than two service beams 205 as described herein without departing from the scope of the present disclosure.

[0096] As described herein or elsewhere, upon adjusting one or more transmission masks (e.g., IBE masks), the base station 105-a may transmit (e.g., via a DCI) an indication of the transmission mask to one or more UEs 115 being served. For example, each UE 115 being served by the base station 105-a or a subset of all UEs 115 may receive the same transmission mask (e.g., a transmission mask determined proportionally to the total number of UEs 115 being served by the base station 105-a). Additionally or alternatively, each UE 115 or a subset of the total number of UEs 115 may receive a transmission mask based on the service beam 205 on which they are being served (UEs 115-a and 115-b may receive a transmission mask corresponding to the number of UEs 115 being served by the service beam 205-a, and UE 115-c may receive a transmission mask corresponding to the number of UEs 115 being served by the service beam 205-b). In some cases, the base station 105-a may weight each UE 115 (e.g., based on characteristics of the individual UE), and the base station 105-a may determine a transmit mask based on a combination of these weights (e.g., on a per-cell or per-beam basis).

[0097] Each UE 115 may determine the MPR using its respective transmit mask. In some cases, each interference level (e.g., IBE interference) may correspond to an MPR level. In some cases, the mapping between IBE interference and MPR may be preconfigured (e.g., each UE 115a may know the mapping a priori). However, it should be noted that in some cases, the base station 105-a may directly signal each UE 115 the MPR value to be used. The MPR may correspond to the maximum allowed reduction in the transmit power of the UE 115, and may, for example, refer to the maximum allowed reduction relative to the maximum output power of the UE 115. The UE 115 operating according to the MPR may transmit information according to the limited output power that may mitigate interference. In some cases, utilizing the MPR may reduce interference to other transmitting devices.

[0098] Switching (e.g., dynamically over time or otherwise) the MPR based on the number of UEs can achieve improved or otherwise better network performance than a static MPR by limiting interference when a large number of UEs 115 are being served (which can improve decoding efficiency (e.g., information can be more easily decoded when there is less interference)). Additionally or alternatively, dynamically switching the MPR based on the number of UEs can achieve better network performance than a static MPR by achieving an increase in maximum output power when a lower number of UEs 115 are being served (which can also improve decoding efficiency and / or increase the range at which a UE 115 can travel from a base station 105-a and still maintain communication with the base station 105-a). Enabling each UE 115 to use the same transmit mask that is adjusted based on the total number of UEs 115 being served can reduce (e.g., minimize) computational complexity. Each UE 115 is enabled to use a transmit mask that is adjusted according to the number of UEs 115 being served on the same serving beam 205 because the UE 115 can reduce interference along one or more individual serving beams 205. In some cases, a base station 105 utilizing multiple antenna beamforming techniques can more efficiently assign frequency resources to the UE 115 based on the location of the UE 115 compared to a base station 105 utilizing single antenna beamforming techniques or not utilizing beamforming techniques at all. In some cases, scheduling resources according to the location of the UE 115 within a cell can achieve more effective interference protection than scheduling resources by means that do not consider the location of the UE 115.

[0099] Figure 3 An example of a transmission scheme 300 that supports IBE interference management according to aspects of the present disclosure is illustrated. In some examples, the transmission scheme 300 can implement aspects of the wireless communication system 100 and / or 200. For example, the transmission scheme 300 can be implemented as shown in reference Figure 1 and Figure 2 The described base station 105 and UE 115 are implemented.

[0100] The transmission scheme 300 may include transmissions 305-a, 305-b, and 305-c having amplitude values ​​(e.g., power amplitude values) that vary with frequency. Each transmission 305 may represent a signal in the frequency domain and may be directed to the same base station 105. Transmission 305-a may correspond to a first UE 115, transmission 305-b may correspond to a second UE 115, and transmission 305-c may correspond to a third UE 115. Each transmission 305 may correspond to a specific scheduled resource 310. For example, the first UE 115 may transmit transmission 305-a primarily within the scheduled resource 310-a, the second UE 115 may transmit transmission 305-b primarily within the scheduled resource 310-b, and the third UE 115 may transmit transmission 305-c primarily within the scheduled resource 310-c. Each scheduled resource 310 may span the same TTI 320.

[0101] In some cases, a transmission 305 may include an overlap region 315 where the transmission 305 overlaps with another transmission 305. For example, a transmission 305-a may overlap with a transmission 305-b in the overlap region 315-a, and a transmission 305-b may overlap with a transmission 305-c in the overlap region 315-b. The overlap region 315 may occur at least partially outside of the scheduled resources 310 associated with a particular transmission 305 (e.g., in the frequency domain). For example, the overlap region 315-a may extend to a frequency associated with the scheduled resources 310-b, which may be due to the first UE 115 transmitting the transmission 305-a at least partially outside of the scheduled resources 310-a. In general, a larger overlap region 315 may be associated with a higher level of interference. For example, as the transmission 305-a contributes more power in the scheduled resources 310-b, IBE interference may increase.

[0102] Interference can be mitigated by assigning UEs 115 to scheduled resources 310 based on their spatial locations. Figure 2 As described, if the second UE 115 forms a spatially isolated UE pair with the first UE 115 and also with the third UE 115, the second UE 115 may use the scheduled resources 310-b, which may be sandwiched between the scheduled resources 310 associated with the first UE 115 (e.g., scheduled resources 310-a) and the scheduled resources 310 associated with the third UE 115 (e.g., scheduled resources 310-c). If the first UE 115 and the third UE 115 form a spatially adjacent UE pair, the second UE 115 may additionally or alternatively use the scheduled resources 310-b, as described with reference to Figure 2Such a scheme may provide frequency isolation for the first UE 115 and the third UE 115. If the transmission 305 is directed to the base station 105, the base station 105 may weight each transmission 305 according to the beam along which the base station 105 receives the transmission, which may mitigate IBE interference. Assuming that the second UE 115 is on a beam separate from the first and third UEs 115, the transmission 305-b may be weighted with a first set of weights, and the transmissions 305-a and 305-c may be weighted with a second set of weights.

[0103] Figure 4 An example of a process flow 400 for supporting IBE interference management according to aspects of the present disclosure is illustrated. In some examples, the process flow 400 can implement aspects of the wireless communication systems 100 and / or 200. For example, the process flow 400 may include a base station 105-b and a UE 115-d, which may be referred to herein as Figure 1 and 2 Various examples of base station 105 and UE 115 are described.

[0104] At 405, the base station 105-b may determine a transmission mask (e.g., an IBE mask) for the UE 115-d. The UE 115-d may be one of a set of UEs 115-d that the base station 105-b schedules for uplink transmission during the TTI. In some cases, the base station 105-b may determine the transmission mask based on the number of UEs 115 scheduled for uplink transmission during the TTI. In some cases, the transmission mask may be proportional to the number of UEs 115. In some cases, the transmission mask may be determined based on an estimate of the IBE interference level for the TTI.

[0105] At 410, the base station 105-b may transmit a DCI indicating a transmission mask used by at least UE 115-d for uplink transmission. The DCI may be sent together with a resource grant for uplink transmission by UE 115-d, which may indicate frequency resources for uplink transmission based on the position of UE 115-d relative to other UEs 115. In some cases, the indicated frequency resources may be used by multiple UEs 115 associated with a single receive beam of the base station 105-b, which may or may not include UE 115-d. The frequency resources used by such multiple UEs 115 may be non-contiguous to each other. Additionally, frequency resources associated with UE 115 having an angular distance relative to the base station 105-b that is less than a threshold (e.g., a predetermined threshold) may be non-contiguous, and frequency resources associated with UE 115 having an angular distance relative to the base station 105-b that is greater than a threshold (e.g., a predetermined threshold) may be contiguous. In some cases, the uplink transmission may be a multi-user uplink transmission.UE 115-d may receive the DCI.

[0106] At 415, the UE 115-d may map the indicated transmit mask to an MPR value. In some cases, the mapping may be according to a predetermined set of mappings between a set of transmit masks and MPR values.

[0107] At 420, the UE 115-d may determine a transmit power for uplink transmissions. In some cases, the UE 115-d may determine the transmit power based on the MPR. Additionally, the UE 115-d may determine the transmit power based on a maximum output power of the UE 115-d.

[0108] At 425, the UE 115-d transmits an uplink transmission during the scheduled TTE. The uplink transmission may be transmitted according to the determined transmit power and / or the received DCI, and may be received by the base station 105-b.

[0109] Figure 5 A block diagram 500 of a device 505 supporting IBE interference management according to aspects of the present disclosure is shown. The device 505 may be an example of aspects of the UE 115 as described herein. The device 505 may include a receiver 510, a communication manager 515, and a transmitter 520. The device 505 may also include one or more processors, a memory coupled to the one or more processors, and instructions stored in the memory that are executable by the one or more processors to enable the one or more processors to perform the interference management features discussed herein. Each of these components may be in communication with each other (e.g., via one or more buses).

[0110] 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 IBE interference management, etc.). The information may be passed to other components of the device 505. The receiver 510 may be a reference Figure 8 Examples of aspects of the described transceiver 820. The receiver 510 may utilize a single antenna or a collection of antennas.

[0111] The communication manager 515 may receive a DCI from the base station 105 indicating an IBE mask for the UE 115, map the indicated IBE mask to an MPR, determine a transmit power for the UE 115 based on the MPR, and transmit an uplink transmission to the base station 105 according to the determined transmit power and the received DCI. The communication manager 515 may be an example of aspects of the communication manager 810 described herein.

[0112] The communication manager 515 or its subcomponents 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 communication manager 515 or its subcomponents may be performed by a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device designed to perform the functions described in the present disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0113] The communication manager 515 or its subcomponents may be physically located at various locations, including being distributed such that portions of functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 515 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 515 or its subcomponents may be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0114] The transmitter 520 may transmit signals generated by other components of the device 505. In some examples, the transmitter 520 may be co-located with the receiver 510 in a transceiver module. For example, the transmitter 520 may be a reference Figure 8 Examples of aspects of the described transceiver 820. The transmitter 520 may utilize a single antenna or a collection of antennas.

[0115] Figure 6 A block diagram 600 of a device 605 supporting IBE interference management according to aspects of the present disclosure is shown. The device 605 may be an example of aspects of the device 505 or UE 115 as described herein. The device 605 may include a receiver 610, a communication manager 615, and a transmitter 640. The device 605 may also include one or more processors. Each of these components may be in communication with each other (e.g., via one or more buses).

[0116] The receiver 610 may receive information, such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to IBE interference management, etc.). The information may be passed to other components of the device 605. The receiver 610 may be a reference Figure 8 Examples of aspects of the described transceiver 820. The receiver 610 may utilize a single antenna or a collection of antennas.

[0117] The communication manager 615 may be an example of aspects of the communication manager 515 as described herein. The communication manager 615 may include a DCI receiver 620, a transmission mask mapper 625, a transmit power determiner 630, and an uplink transmission transmitter 635. The communication manager 615 may be an example of aspects of the communication manager 810 described herein. In some cases, the communication manager 615 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0118] The DCI receiver 620 may receive DCI from the base station 105 indicating an IBE mask for the UE 115. In some cases, the DCI receiver 620 may be a processor (e.g., a transceiver processor, or a radio processor, or a receiver processor). The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein. The transceiver processor may be co-located and / or in communication with a transceiver of the device (e.g., directing the operation of the transceiver). The radio processor may be co-located and / or in communication with a radio (e.g., an LTE radio or a Wi-Fi radio) of the device (e.g., directing the operation of the radio). The receiver processor may be co-located and / or in communication with a receiver of the device (e.g., directing the operation of the receiver).

[0119] The transmit mask mapper 625 may map the indicated IBE mask to the MPR. In some cases, the transmit mask mapper 625 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0120] The transmit power determiner 630 may determine the transmit power for the UE 115 based on the MPR. In some cases, the transmit power determiner 630 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0121] The uplink transmission transmitter 635 may transmit an uplink transmission to the base station 105 based on the determined transmit power and the received DCI. In some cases, the uplink transmission transmitter 635 may be a processor (e.g., a transceiver processor, or a radio processor, or a transmitter processor). The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein. The transmitter processor may be co-located and / or in communication with the transmitter of the device (e.g., directing the operation of the transceiver).

[0122] The transmitter 640 may transmit signals generated by other components of the device 605. In some examples, the transmitter 640 may be co-located with the receiver 610 in a transceiver module. For example, the transmitter 640 may be a reference Figure 8 Examples of aspects of the described transceiver 820. The transmitter 640 may utilize a single antenna or a collection of antennas.

[0123] Figure 7 A block diagram 700 of a communication manager 705 supporting IBE interference management according to aspects of the present disclosure is shown. The communication manager 705 may be an example of aspects of the communication manager 515, the communication manager 615, or the communication manager 810 described herein. The communication manager 705 may include a DCI receiver 710, a transmission mask mapper 715, a transmit power determiner 720, an uplink transmission transmitter 725, and a grant receiver 730. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses). In some cases, the communication manager 705 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0124] The DCI receiver 710 may receive a DCI indicating an IBE mask for the UE 115 from the base station 105. In some examples, the DCI receiver 710 may receive the DCI indicating the IBE mask based on the number of UEs 115 scheduled for uplink transmissions during the same TTI by the base station 105. In some examples, the DCI receiver 710 may receive the DCI indicating the IBE mask, the IBE mask being based on an estimate of an IBE interference level within a TTI for uplink transmissions (e.g., an IBE interference level within a TTI for uplink transmissions that is proportional to the number of UEs 115 scheduled for uplink transmissions during the TTI by the base station 105). In some cases, the indicated IBE mask is proportional to the number of UEs 115 scheduled for uplink transmissions during the same TTI by the base station 105. In some cases, the DCI receiver 710 may be a processor (e.g., a transceiver processor, or a radio processor, or a receiver processor). The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein. A transceiver processor may be co-located and / or in communication with a transceiver of a device (e.g., directing the operation of the transceiver). A radio processor may be co-located and / or in communication with a radio (e.g., an LTE radio or a Wi-Fi radio) of a device (e.g., directing the operation of the radio). A receiver processor may be co-located and / or in communication with a receiver of a device (e.g., directing the operation of the receiver).

[0125] The transmit mask mapper 715 may map the indicated IBE mask to the MPR. In some examples, the transmit mask mapper 715 may map the indicated IBE mask to the MPR according to a predetermined mapping. In some cases, the transmit mask mapper 715 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0126] The transmit power determiner 720 may determine the transmit power for the UE 115 based on the MPR. In some examples, the transmit power determiner 720 may determine the transmit power for the UE 115 based on the maximum output power and the MPR. In some cases, the transmit power determiner 720 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0127] The uplink transmission transmitter 725 can transmit an uplink transmission to the base station 105 based on the determined transmit power and the received DCI. In some cases, the uplink transmission includes a multi-user uplink transmission. In some cases, the uplink transmission transmitter 725 can be a processor (e.g., a transceiver processor, or a radio processor, or a transmitter processor). The processor can be coupled to a memory and execute instructions stored in the memory, which enable the processor to perform or facilitate the interference management features discussed herein. The transmitter processor can be co-located and / or communicated with the transmitter of the device (e.g., to direct the operation of the transceiver).

[0128] The grant receiver 730 may receive a resource grant for an uplink transmission. In some cases, the grant of resources indicates frequency resources allocated for uplink transmission based on the location of the UE 115 relative to one or more other UEs 115. In some cases, the grant receiver 730 may be a processor (e.g., a transceiver processor, or a radio processor, or a receiver processor). The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein. The transceiver processor may be co-located and / or communicate with the transceiver of the device (e.g., directing the operation of the transceiver). The radio processor may be co-located and / or communicate with the radio of the device (e.g., an LTE radio or a Wi-Fi radio) (e.g., directing the operation of the radio). The receiver processor may be co-located and / or communicate with the receiver of the device (e.g., directing the operation of the receiver).

[0129] Figure 8 A diagram of a system 800 including a device 805 supporting IBE interference management according to aspects of the present disclosure is shown. The device 805 may be an example of a device 505, a device 605, or a UE 115 as described herein or include components of the above devices. The device 805 may include components for two-way voice and data communications, including components for transmitting and receiving communications, including a communication manager 810, an I / O controller 815, a transceiver 820, an antenna 825, a memory 830, and a processor 840. These components may be in electronic communication via one or more buses (e.g., bus 845).

[0130] The communication manager 810 may receive a DCI from the base station 105 indicating an IBE mask for the UE 115, map the indicated IBE mask to an MPR, determine a transmit power for the UE 115 based on the MPR, and transmit an uplink transmission to the base station 105 according to the determined transmit power and the received DCI. In some cases, the communication manager 810 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0131] I / O controller 815 can manage input and output signals of device 805. I / O controller 815 can also manage peripheral devices that are not integrated into device 805. In some cases, I / O controller 815 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 815 can utilize an operating system, such as Or another known operating system. In other cases, I / O controller 815 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 815 may be implemented as part of a processor. In some cases, a user may interact with device 805 via I / O controller 815 or via hardware components controlled by I / O controller 815.

[0132] The transceiver 820 may communicate bidirectionally via one or more antennas, wired or wireless links, as described herein. For example, the transceiver 820 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 820 may also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0133] In some cases, a wireless device may include a single antenna 825. However, in some cases, the device may have more than one antenna 825, which may be capable of transmitting or receiving multiple wireless transmissions concurrently.

[0134] The memory 830 may include random access memory (RAM) and read-only memory (ROM). The memory 830 may store computer-readable, computer-executable code 835 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 830 may include, among other things, a basic input / output system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0135] The processor 840 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 840 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 840. The processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks that support IBE interference management).

[0136] The code 835 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 835 may be stored in a non-transitory computer-readable medium, such as a system memory or other type of memory. In some cases, the code 835 may not be directly executed by the processor 840, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0137] Fig. 9 A block diagram 900 of a device 905 supporting IBE interference management according to aspects of the present disclosure is shown. The device 905 may be an example of aspects of a base station 105 as described herein. The device 905 may include a receiver 910, a communication manager 915, and a transmitter 920. The device 905 may also include one or more processors, a memory coupled to the one or more processors, and instructions stored in the memory that are executable by the one or more processors to enable the one or more processors to perform the interference management features discussed herein. Each of these components may be in communication with each other (e.g., via one or more buses).

[0138] 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 IBE interference management, etc.). The information may be passed to other components of the device 905. The receiver 910 may be a reference Fig.12 Examples of aspects of the described transceiver 1220. The receiver 910 may utilize a single antenna or a collection of antennas.

[0139] The communication manager 915 may determine an IBE mask for a UE 115 that is one of a set of UEs 115 to be scheduled by the base station 105 for uplink transmission during a TTI, and transmit to the UE 115 a DCI indicating the determined IBE mask for uplink transmissions to be continued by the UE 115. The communication manager 915 may be an example of aspects of the communication manager 1210 described herein.

[0140] The communication manager 915 or its subcomponents 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 communication manager 915 or its subcomponents may be performed by a general purpose processor, a DSP, an application specific integrated circuit (ASIC), an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0141] The communication manager 915 or its subcomponents may be physically located at various locations, including being distributed such that portions of functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 915 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 915 or its subcomponents may be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0142] The transmitter 920 may transmit signals generated by other components of the device 905. In some examples, the transmitter 920 may be co-located with the receiver 910 in a transceiver module. For example, the transmitter 920 may be a reference Fig.12 Examples of various aspects of the described transceiver 1220. The transmitter 920 may utilize a single antenna or a collection of antennas.

[0143] Fig.10 A block diagram 1000 of a device 1005 supporting IBE interference management according to aspects of the present disclosure is shown. The device 1005 may be an example of aspects of the device 905 or base station 105 as described herein. The device 1005 may include a receiver 1010, a communication manager 1015, and a transmitter 1030. The device 1005 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0144] The receiver 1010 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to IBE interference management, etc.). The information may be passed to other components of the device 1005. The receiver 1010 may be a reference Fig.12Examples of various aspects of the described transceiver 1220. The receiver 1010 may utilize a single antenna or a collection of antennas.

[0145] The communication manager 1015 may be an example of aspects of the communication manager 915 as described herein. The communication manager 1015 may include a transmission mask determiner 1020 and a DCI transmitter 1025. The communication manager 1015 may be an example of aspects of the communication manager 1210 described herein. In some cases, the communication manager 1015 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory, which instructions enable the processor to perform or facilitate the interference management features discussed herein.

[0146] The transmission mask determiner 1020 may determine an IBE mask for a UE 115 that is one of a set of UEs 115 to be scheduled for uplink transmission during a TTI by the base station 105. In some cases, the transmission mask determiner 1020 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0147] The DCI transmitter 1025 may transmit to the UE 115 a DCI indicating the determined IBE mask for uplink transmission by the UE 115. In some cases, the DCI transmitter 1025 may be a processor (e.g., a transceiver processor, or a radio processor, or a transmitter processor). The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein. The transmitter processor may be co-located and / or in communication with a transmitter of the device (e.g., directing the operation of the transceiver).

[0148] Transmitter 1030 may transmit signals generated by other components of device 1005. In some examples, transmitter 1030 may be co-located with receiver 1010 in a transceiver module. Fig.12 Examples of various aspects of the described transceiver 1220. The transmitter 1030 may utilize a single antenna or a collection of antennas.

[0149] Fig.11A block diagram 1100 of a communication manager 1105 supporting IBE interference management according to aspects of the present disclosure is shown. The communication manager 1105 may be an example of aspects of the communication manager 915, the communication manager 1015, or the communication manager 1210 described herein. The communication manager 1105 may include a transmit mask determiner 1110, a DCI transmitter 1115, an interference estimator 1120, a resource allocator 1125, a receive beam identifier 1130, and an angular distance threshold component 1135. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses). In some cases, the communication manager 1105 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0150] The emission mask determiner 1110 may determine an IBE mask for a UE 115 that is one of a set of UEs 115 to be scheduled by the base station 105 for uplink transmission during a TTI. In some examples, the emission mask determiner 1110 may identify a number of UEs of the set of UEs 115 to be scheduled by the base station 105 during a TTI. In some examples, the emission mask determiner 1110 may determine an IBE mask for the UE 115 based on the identified number. In some examples, the emission mask determiner 1110 may determine an IBE mask for the UE 115 based on an estimated IBE interference level. In some cases, the IBE mask is proportional to the number of UEs of the set of UEs 115 to be scheduled by the base station 105 during a TTI. In some cases, the emission mask determiner 1110 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0151] The DCI transmitter 1115 may transmit to the UE 115 a DCI indicating the determined IBE mask for uplink transmission by the UE 115. In some cases, the DCI transmitter 1115 may be a processor (e.g., a transceiver processor, or a radio processor, or a transmitter processor). The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein. The transmitter processor may be co-located and / or in communication with a transmitter of the device (e.g., directing the operation of the transceiver).

[0152] The interference estimator 1120 may estimate an IBE interference level during a TTI (e.g., an IBE interference level during the TTI that is proportional to the number of UEs 115 scheduled for uplink transmission by the base station 105 during the TTI). In some cases, the interference estimator 1120 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0153] The resource allocator 1125 may allocate frequency resources to the UE 115 based on the location of the UE 115 relative to at least one of the set of UEs 115, wherein the transmitted DCI indicates the allocated frequency resources. In some examples, the resource allocator 1125 may allocate frequency resources to the UE 115 that are non-contiguous with the frequency resources allocated to any other UE 115 in the set of UEs 115. In some examples, the resource allocator 1125 may allocate a first frequency resource that is non-contiguous with the second frequency resource allocated to the second UE 115 to the UE 115 based on the identification. In some examples, the resource allocator 1125 may allocate a first frequency resource that is contiguous with the second frequency resource allocated to the second UE 115 to the UE 115 based on the identification. In some cases, the resource allocator 1125 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory, which enable the processor to perform or facilitate the interference management features discussed herein.

[0154] The receive beam identifier 1130 can identify a set of UEs 115 associated with a receive beam of the base station 105 from the set of UEs 115, the UE 115 being one of the set of UEs 115. In some cases, each UE 115 in the set of UEs 115 is allocated frequency resources that are non-contiguous with the frequency resources allocated to any other UE 115 in the set of UEs 115. In some cases, the receive beam identifier 1130 can be a processor. The processor can be coupled to a memory and execute instructions stored in the memory, which enable the processor to perform or facilitate the interference management features discussed herein.

[0155] The angular distance threshold component 1135 may identify an angular distance that separates the UE 115 and a second UE 115 in the set of UEs 115 by less than or equal to a predetermined threshold angular distance. In some examples, the angular distance threshold component 1135 may identify an angular distance that separates the UE 115 and a second UE 115 in the set of UEs 115 by greater than or equal to a predetermined threshold angular distance. In some cases, the angular distance threshold component 1135 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0156] Fig.12 A diagram of a system 1200 including a device 1205 supporting IBE interference management according to aspects of the present disclosure is shown. The device 1205 may be an example of or include components of a device 905, a device 1005, or a base station 105 as described herein. The device 1205 may include components for two-way voice and data communications, including components for transmitting and receiving communications, including a communication manager 1210, a network communication manager 1215, a transceiver 1220, an antenna 1225, a memory 1230, a processor 1240, and an inter-station communication manager 1245. These components may be in electronic communication via one or more buses (e.g., bus 1250).

[0157] The communication manager 1210 may determine an IBE mask for a UE 115 that is one of a set of UEs 115 to be scheduled by the base station 105 for uplink transmission during a TTI, and transmit to the UE 115 a DCI indicating the determined IBE mask for uplink transmission by the UE 115. In some cases, the communication manager 1210 may be a processor. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the interference management features discussed herein.

[0158] The network communications manager 1215 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1215 may manage the delivery of data communications for client devices, such as one or more UEs 115.

[0159] The transceiver 1220 may communicate bidirectionally via one or more antennas, wired or wireless links, as described herein. For example, the transceiver 1220 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1220 may also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0160] In some cases, a wireless device may include a single antenna 1225. However, in some cases, the device may have more than one antenna 1225, which may be capable of transmitting or receiving multiple wireless transmissions concurrently.

[0161] The memory 1230 may include RAM, ROM, or a combination thereof. The memory 1230 may store computer readable code 1235 including instructions that, when executed by a processor (e.g., processor 1240), cause the device to perform various functions described herein. In some cases, the memory 1230 may include, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0162] Processor 1240 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1240 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into processor 1240. Processor 1240 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1230) to cause device 1205 to perform various functions (e.g., functions or tasks that support IBE interference management).

[0163] The inter-site communication manager 1245 may manage communications with other base stations 105 and may include a controller or scheduler for controlling communications with UE 115 in cooperation with other base stations 105. For example, the inter-site communication manager 1245 may coordinate the scheduling of transmissions to UE 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-site communication manager 1245 may provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0164] The code 1235 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1235 may be stored in a non-transitory computer-readable medium, such as a system memory or other type of memory. In some cases, the code 1235 may not be directly executable by the processor 1240, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0165] Fig.13 1 is a flowchart illustrating a method 1300 for supporting IBE interference management according to aspects of the present disclosure. The operations of the method 1300 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1300 may be implemented by a UE 115 or a component thereof as described herein. Figures 5 to 8 In some examples, UE 115 may execute instruction sets for controlling functional elements of UE 115 to perform the functions described below. Additionally or alternatively, UE 115 may use dedicated hardware to perform various aspects of the functions described below.

[0166] At 1305, UE 115 may receive a DCI from base station 105 indicating an IBE mask for UE 115. 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 as described with reference to Figures 5 to 8 The DCI receiver described above is performed.

[0167] At 1310, UE 115 may map the indicated IBE mask to the MPR. 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 as described with reference to Figures 5 to 8 The described emission mask mapper is performed.

[0168] At 1315, UE 115 may determine a transmit power for UE 115 based on the MPR. The operations of 1315 may be performed according to the methods described herein. In some examples, aspects of the operations of block 1315 may be performed as described with reference to Figures 5 to 8 The transmit power determiner described is performed.

[0169] At 1320, UE 115 may transmit an uplink transmission to base station 105 based on the determined transmit power and the received DCI. 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 as described with reference to Figures 5 to 8 The described uplink transmission is performed by a transmitter.

[0170] Fig.14 1400 for supporting IBE interference management according to aspects of the present disclosure. The operations of the method 1400 may be implemented by the UE 115 or its components as described herein. For example, the operations of the method 1400 may be implemented by the UE 115 or its components as described herein. Figures 5 to 8 In some examples, UE 115 may execute instruction sets for controlling functional elements of UE 115 to perform the functions described below. Additionally or alternatively, UE 115 may use dedicated hardware to perform various aspects of the functions described below.

[0171] At 1405, UE 115 may receive DCI from base station 105 that indicates an IBE mask for UE 115 based on the number of UEs 115 scheduled for uplink transmission by base station 105 during the same TTI. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be performed as described with reference to Figures 5 to 8 The DCI receiver described above is performed.

[0172] At 1410, UE 115 may map the indicated IBE mask to the MPR. 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 as described with reference to Figures 5 to 8 The described emission mask mapper is performed.

[0173] At 1415, UE 115 may determine a transmit power for UE 115 based on the MPR. The operations of block 1420 may be performed according to the methods described herein. In some examples, aspects of the operations of block 1420 may be performed as described with reference to Figures 5 to 8 The transmit power determiner described is performed.

[0174] At 1420, UE 115 may transmit an uplink transmission to base station 105 based on the determined transmit power and the received DCI. The operations of 1425 may be performed according to the methods described herein. In some examples, aspects of the operations of 1425 may be performed as described with reference to Figures 5 to 8 The uplink transmission described is performed by a transmitter.

[0175] Fig.15 1 is a flowchart illustrating a method 1500 for supporting IBE interference management according to aspects of the present disclosure. The operations of the method 1500 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE 115 or a component thereof as described herein. Figures 5 to 8 In some examples, UE 115 may execute instruction sets for controlling functional elements of UE 115 to perform the functions described below. Additionally or alternatively, UE 115 may use dedicated hardware to perform various aspects of the functions described below.

[0176] At 1505, UE 115 may receive a DCI from base station 105 indicating an IBE mask for UE 115. 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 as described with reference to Figures 5 to 8 The DCI receiver described above is performed.

[0177] At 1510, UE 115 may receive a resource grant for an uplink transmission, wherein the resource grant indicates frequency resources for uplink transmission based on a location of the UE 115 relative to one or more other UEs 115. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be performed as described in reference to Figures 5 to 8 The described grant is for the receiver to perform.

[0178] At 1515, UE 115 may map the indicated IBE mask to the MPR. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be performed as described with reference to Figures 5 to 8 The described emission mask mapper is performed.

[0179] At 1520, UE 115 may determine a transmit power for the UE 115 based on the MPR. The operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of block 1520 may be performed as described with reference to Figures 5 to 8 The transmit power determiner described is performed.

[0180] At 1525, UE 115 may transmit an uplink transmission to base station 105 based on the determined transmit power and the received DCI. The operations of 1525 may be performed according to the methods described herein. In some examples, aspects of the operations of 1525 may be performed as described with reference to Figures 5 to 8 The uplink transmission described is performed by a transmitter.

[0181] Fig.16 1 is a flowchart illustrating a method 1600 for supporting IBE interference management according to aspects of the present disclosure. The operations of the method 1600 may be implemented by the base station 105 or components thereof as described herein. For example, the operations of the method 1600 may be implemented by the base station 105 or components thereof as described herein. Figures 9 to 12 In some examples, the base station 105 may execute an instruction set for controlling the functional elements of the base station 105 to perform the functions described below. Additionally or alternatively, the base station 105 may use dedicated hardware to perform various aspects of the functions described below.

[0182] At 1605, the base station 105 may determine an IBE mask for a UE 115 that is one of a set of UEs 115 to be scheduled by the base station 105 for uplink transmission during a TTI. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be performed as described with reference to Figures 9 to 12 The described emission mask determiner is performed.

[0183] At 1610, base station 105 may transmit to UE 115 a DCI indicating the determined IBE mask for uplink transmission by UE 115. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed as described with reference to Figures 9 to 12 The described DCI transmitter is performed.

[0184] Fig.17 1 is a flowchart illustrating a method 1700 for supporting IBE interference management according to aspects of the present disclosure. The operations of the method 1700 may be implemented by the base station 105 or components thereof as described herein. For example, the operations of the method 1700 may be implemented by the base station 105 or components thereof as described herein. Figures 9 to 12 In some examples, the base station 105 may execute an instruction set for controlling the functional elements of the base station 105 to perform the functions described below. Additionally or alternatively, the base station 105 may use dedicated hardware to perform various aspects of the functions described below.

[0185] At 1705, the base station 105 may estimate an IBE interference level during a TTI that is proportional to the number of UEs in the set of UEs 115 scheduled by the base station 105 for uplink transmission during the TTI. The operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be performed as described with reference to Figures 9 to 12 The interference estimator described is implemented.

[0186] At 1710, the base station 105 may determine an IBE mask and an estimated IBE interference level for a UE that is one of a set of UEs to be scheduled by the base station for uplink transmission during a TTI. The operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be performed as described with reference to Figures 9 to 12 The described emission mask determiner is performed.

[0187] At 1715, base station 105 may transmit to UE 115 a DCI indicating the determined IBE mask for uplink transmission by UE 115. The operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be performed as described with reference to Figures 9 to 12 The described DCI transmitter is performed.

[0188] It should be noted that the methods described herein describe possible implementations, and that the various operations and steps may be rearranged or otherwise modified and other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0189] The technology described herein can be used in various wireless communication systems, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA) and other systems. CDMA systems can implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA). CDMA2000 covers IS-2000, IS-95 and IS-856 standards. IS-2000 versions are generally referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is generally referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. TDMA systems can implement radio technologies such as Global System for Mobile Communications (GSM).

[0190] OFDMA systems can implement radio technologies such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE, LTE-A, and LTE-A Pro are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, LTE-A Pro, NR, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein may be used for systems and radio technologies mentioned herein as well as for other systems and radio technologies. Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may also be applicable to applications other than LTE, LTE-A, LTE-A Pro, or NR applications.

[0191] A macro cell generally covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs with service subscriptions to a network provider. A small cell may be associated with a lower power base station (compared to a macro cell), and the small cell may operate in the same or different (e.g., licensed, unlicensed, etc.) frequency band as the macro cell. According to various examples, a small cell may include a pico cell, a femto cell, and a micro cell. A pico cell, for example, may cover a smaller geographic area and may allow unrestricted access by UEs with service subscriptions to a network provider. A femto cell may also cover a smaller geographic area (e.g., a residence) and may provide restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of users in the residence, etc.). An eNB for a macro cell may be referred to as a macro eNB. An eNB for a small cell may be referred to as a small cell eNB, a pico eNB, a femto eNB, or a home eNB. An eNB may support one or more (eg, two, three, four, etc.) cells and may also support communication using one or more component carriers.

[0192] The wireless communication systems described herein may support synchronous or asynchronous operation. For synchronous operation, each base station may have similar frame timing, and transmissions from different base stations may be roughly aligned in time. For asynchronous operation, each base station may have different frame timing, and transmissions from different base stations may not be aligned in time. The techniques described herein may be used for synchronous or asynchronous operation.

[0193] The information and signals described herein may be represented using any of a variety of different techniques and technologies. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout this description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0194] The various illustrative blocks and modules described in conjunction with the disclosure herein may be implemented or executed with a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0195] 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 by a computer-readable medium as one or more instructions or codes. Other examples and implementations fall within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features that implement the functions may also be physically located in various locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0196] Computer-readable medium includes both non-transient computer storage medium and communication medium, and it includes any medium that facilitates computer program to transfer from one place to another.Non-transient storage medium can be any available medium that can be accessed by general or special-purpose computer.As an example and not limitation, non-transient computer-readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, disk storage or other magnetic storage device, or can be used to carry or store instruction or data structure form of desired program code means and can be accessed by general or special-purpose computer or general or special-purpose processor any other non-transient medium.Any connection is also properly referred to as computer-readable medium.For example, if software is transmitted from website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are just included in the definition of medium. Disk and disc as used herein include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0197] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Similarly, as used herein, the phrase "based on" should not be interpreted as referring to a closed set of conditions. For example, an exemplary step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0198] In the accompanying drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number that distinguishes between similar components. If only the first reference number is used in the specification, the description may apply to any of the similar components having the same first reference number regardless of the second reference number, or other subsequent reference numbers.

[0199] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or that fall within the scope of the claims. The term "exemplary" as used herein means "used as an example, instance, or illustration" and does not mean "better than" or "better than other examples." This detailed description includes specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0200] The description herein is provided to enable those skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the universal principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), comprising: receiving, from a base station, downlink control information indicating an in-band emission (IBE) mask for the UE; mapping the indicated IBE mask to the maximum power reduction; determining a transmit power for the UE based at least in part on the maximum power reduction; as well as An uplink transmission is transmitted to the base station based on the determined transmit power and the received downlink control information.

2. The method of claim 1 , wherein receiving the downlink control information comprises: The downlink control information is received indicating the IBE mask, the IBE mask being based at least in part on a number of UEs scheduled for uplink transmission during a same transmission time interval by the base station.

3. The method of claim 2, wherein the indicated IBE mask is proportional to the number of UEs scheduled by the base station for uplink transmission during the same transmission time interval.

4. The method of claim 1 , wherein receiving the downlink control information comprises: The downlink control information is received indicating the IBE mask, the IBE mask being based at least in part on an estimate of an IBE interference level within a transmission time interval of the uplink transmission, the IBE interference level being proportional to the number of UEs scheduled for uplink transmission by the base station during the transmission time interval.

5. The method of claim 4, wherein mapping the indicated IBE mask to the maximum power reduction comprises: The indicated IBE mask is mapped to the maximum power reduction according to a predetermined mapping.

6. The method of claim 1, wherein receiving the downlink control information further comprises: A resource grant is received for the uplink transmission.

7. The method of claim 6, wherein the resource grant indicates frequency resources allocated for the uplink transmission based at least in part on a location of the UE relative to one or more other UEs.

8. The method of claim 1 , wherein determining the transmit power for the UE comprises: The transmit power for the UE is determined based at least in part on a maximum output power and the maximum power reduction.

9. The method of claim 1, wherein the uplink transmission comprises a multi-user uplink transmission.

10. A method for wireless communication at a base station, comprising: determining an in-band emission (IBE) mask for a user equipment (UE), the UE being one of a plurality of UEs to be scheduled by the base station for uplink transmission during a transmission time interval; transmitting, to the UE, downlink control information including an indication of the determined IBE mask, the IBE mask being mappable to a maximum power reduction for uplink transmissions by the UE; as well as The uplink transmission is received with a reduced transmit power based on the maximum power.

11. The method of claim 10, wherein determining the IBE mask for the UE comprises: identifying a number of the plurality of UEs to be scheduled by the base station during the transmission time interval; as well as The IBE mask for the UE is determined based at least in part on the identified number.

12. The method of claim 11, wherein the IBE mask is proportional to the number of the plurality of UEs to be scheduled by the base station during the transmission time interval.

13. The method of claim 10, wherein determining the IBE mask for the UE comprises: estimating an IBE interference level during the transmission time interval, the IBE interference level being proportional to a number of the plurality of UEs scheduled by the base station for uplink transmission during the transmission time interval; as well as The IBE mask for the UE is determined based at least in part on the estimated IBE interference level.

14. The method of claim 10, further comprising: Frequency resources are allocated to the UE based at least in part on a location of the UE relative to at least one UE of the plurality of UEs, wherein the transmitted downlink control information indicates the allocated frequency resources.

15. The method of claim 10, further comprising: Identify a UE set associated with a receive beam of the base station from the plurality of UEs, the UE being one of the UEs in the UE set; as well as The UE is allocated frequency resources that are non-contiguous with frequency resources allocated to any other UE in the set of UEs.

16. The method of claim 15, wherein each UE in the set of UEs is allocated frequency resources that are non-contiguous with frequency resources allocated to any other UE in the set of UEs.

17. The method of claim 10, further comprising: identifying that the UE and a second UE of the plurality of UEs are separated by an angular distance less than or equal to a threshold angular distance; as well as Based at least in part on the identification, first frequency resources are allocated to the UE that are non-contiguous with second frequency resources allocated to the second UE.

18. The method of claim 10, further comprising: identifying that the UE and a second UE of the plurality of UEs are separated by an angular distance greater than or equal to a threshold angular distance; as well as Based at least in part on the identification, first frequency resources are allocated to the UE that are contiguous with second frequency resources allocated to the second UE.

19. An apparatus for wireless communication at a user equipment (UE), comprising: processor, a memory in electronic communication with the processor; as well as instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to: receiving, from a base station, downlink control information indicating an in-band emission (IBE) mask for the UE; mapping the indicated IBE mask to the maximum power reduction; determining a transmit power for the UE based at least in part on the maximum power reduction; as well as An uplink transmission is transmitted to the base station based on the determined transmit power and the received downlink control information.

20. The apparatus of claim 19, wherein the instructions are further executable by the processor to receive the downlink control information by being executable by the processor to: The downlink control information is received indicating the IBE mask, the IBE mask being based at least in part on a number of UEs scheduled for uplink transmission during a same transmission time interval by the base station.

21. The apparatus of claim 19, wherein the instructions are further executable by the processor to receive the downlink control information by being executable by the processor to: The downlink control information is received indicating the IBE mask, the IBE mask being based at least in part on an estimate of an IBE interference level within a transmission time interval of the uplink transmission, the IBE interference level being proportional to the number of UEs scheduled for uplink transmission by the base station during the transmission time interval.

22. The apparatus of claim 19, wherein the instructions are further executable by the processor to receive the downlink control information by being executable by the processor to: A resource grant is received for the uplink transmission.

23. The apparatus of claim 19, wherein the instructions are further executable by the processor to determine the transmit power for the UE by being executable by the processor to: The transmit power for the UE is determined based at least in part on a maximum output power and the maximum power reduction.

24. An apparatus for wireless communication at a base station, comprising: processor, a memory in electronic communication with the processor; as well as instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to: determining an in-band emission (IBE) mask for a user equipment (UE), the UE being one of a plurality of UEs to be scheduled by the base station for uplink transmission during a transmission time interval; transmitting, to the UE, downlink control information including an indication of the determined IBE mask, the IBE mask being mappable to a maximum power reduction for uplink transmissions by the UE; as well as The uplink transmission is received with a reduced transmit power based on the maximum power.

25. The apparatus of claim 24, wherein the instructions are further executable by the processor to determine the IBE mask for the UE by being executable by the processor to: identifying a number of the plurality of UEs to be scheduled by the base station during the transmission time interval; and The IBE mask for the UE is determined based at least in part on the identified number.

26. The apparatus of claim 24, wherein the instructions are further executable by the processor to determine the IBE mask for the UE by being executable by the processor to: estimating an IBE interference level during the transmission time interval; and The IBE mask for the UE is determined based at least in part on an estimated IBE interference level that is proportional to a number of the plurality of UEs scheduled for uplink transmission by the base station during the transmission time interval.

27. The apparatus of claim 24, wherein the instructions are further executable by the processor to: Frequency resources are allocated to the UE based at least in part on a location of the UE relative to at least one UE of the plurality of UEs, wherein the transmitted downlink control information indicates the allocated frequency resources.

28. The apparatus of claim 24, wherein the instructions are further executable by the processor to: identifying a UE set associated with a receive beam of the base station from the plurality of UEs, the UE being one of the UEs in the UE set; and The UE is allocated frequency resources that are non-contiguous with frequency resources allocated to any other UE in the set of UEs.

29. The apparatus of claim 24, wherein the instructions are further executable by the processor to: identifying that the UE and a second UE of the plurality of UEs are separated by an angular distance less than or equal to a predetermined threshold angular distance; and Based at least in part on the identification, first frequency resources are allocated to the UE that are non-contiguous with second frequency resources allocated to the second UE.

30. The apparatus of claim 24, wherein the instructions are further executable by the processor to: identifying that the UE and a second UE of the plurality of UEs are separated by an angular distance greater than or equal to a predetermined threshold angular distance; and Based at least in part on the identification, first frequency resources are allocated to the UE that are contiguous with second frequency resources allocated to the second UE.

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