Sidelink TX power control

Abstract

Sidelink TX power control is disclosed. In a specific implementation, a method of wireless communication includes selecting, by a user equipment (UE), a first access link among multiple access links. Each of the multiple access links can be used for communication between the UE and a base station. The method also includes determining, by the UE, a sidelink transmission power based on the first access link. The method also includes sending, by the UE, data to an electronic device via the sidelink based on the sidelink transmission power.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Patent Application No. 15 / 931,399, filed on May 13, 2020, and entitled “SIDELINK TX POWER CONTROL,” and U.S. Provisional Patent Application No. 62 / 862,552, filed on June 17, 2019, and entitled “SIDELINK TX POWERCONTROL,” both of which are expressly incorporated herein by reference in their entireties. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communication systems, and more particularly to sidelink TX power control. Background Art

[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephone, video, data, messaging, broadcasting, etc. These wireless networks can be multiple access networks capable of supporting multiple users by sharing available network resources. Such a network (usually a multiple access network) supports the communication of multiple users by sharing available network resources. An example of such a network is the Universal Terrestrial Radio Access Network (UTRAN). UTRAN is a radio access network (RAN) defined as a part of the third generation (3G) mobile phone technology of the Universal Mobile Telecommunications System (UMTS), supported by the Third Generation Partnership Project (3GPP). Examples of multiple access network formats include code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, and single carrier FDMA (SC-FDMA) networks.

[0005] A wireless communication network may include multiple base stations or Node Bs that can support communication for multiple user equipments (UEs). A UE may communicate with a base station via a downlink and an uplink. A downlink (or forward link) refers to a communication link from a base station to a UE, while an uplink (or reverse link) refers to a communication link from a UE to a base station.

[0006] The base station may send data and control information to the UE on the downlink, and / or may receive data and control information from the UE on the uplink. On the downlink, the transmission from the base station may encounter interference due to transmissions from neighboring base stations or from other wireless radio frequency (RF) transmitters. On the uplink, the transmission from the UE may encounter interference from uplink transmissions of other UEs communicating with the neighboring base stations or from other wireless RF transmitters. This interference may degrade the performance of both the downlink and uplink.

[0007] As the demand for mobile broadband access continues to increase, the potential for interference and congested networks also grows as more UEs access long-range wireless communication networks and more short-range wireless systems are deployed in communities. Research and development continue to advance wireless technology, not only to meet the growing demand for mobile broadband access, but also to advance and enhance the user experience of mobile communications.

[0008] In some wireless communication systems, a UE communicates with a base station via an access link (e.g., a communication link between (multiple) UEs and (multiple) gNBs), and the UE may communicate with other electronic devices using a side link (e.g., a communication link between (multiple) UEs and another UE, or a communication link between an IAB node and another IAB node). When a UE transmits using a side link, the UE needs to consider the potential interference that the side link transmission may cause to the access link. To address potential interference, the UE may control its side link transmission (TX) power. For example, the UE may perform side link (SL) open-loop power control. In some implementations, in order to perform SL open-loop power control, the UE is configured to use only downlink (DL) path loss (between TX UE and gNB), only SL path loss (between TX UE and RX UE), or both DL path loss and SL path loss to determine the SL TX power. When the SL open-loop power control is configured to use both the DL path loss and the SL path loss, the minimum of the power values ​​given by the DL path loss-based SL open-loop power control and the SL path loss-based open-loop power control is taken and used as the SL TX power. However, such an approach is flawed and may lead to undesirable results. For example, conventional SL open-loop power control schemes typically do not consider beamforming in millimeter waves (mmWave), in which signal energy is directed in certain directions. In addition, conventional SL open-loop power control schemes typically do not consider multiple access links that can be used during communication between a UE and a base station. Summary of the invention

[0009] Some aspects of the present disclosure are summarized below to provide a basic understanding of the technology discussed. This summary is not an extensive overview of all expected features of the present disclosure, and is neither intended to identify important or critical elements of all aspects of the present disclosure, nor is it intended to delineate the scope of any or all aspects of the present disclosure. Its sole purpose is to present some concepts of one or more aspects of the present disclosure in summary form as a preface to a more detailed description presented later.

[0010] In one aspect of the present disclosure, a method of wireless communication includes selecting, by a user equipment (UE), a first access link among multiple access links. Each of the multiple access links can be used for communication between the UE and a base station. The method also includes determining, by the UE, a side link transmission power based on the first access link. The method also includes sending, by the UE, data to an electronic device via a side link based on the side link transmission power.

[0011] In another aspect of the present disclosure, an apparatus configured for wireless communication includes a component for selecting, by a user equipment (UE), a first access link among multiple access links. Each of the multiple access links can be used for communication between the UE and a base station. The apparatus also includes a component for determining, by the UE, a sidelink transmission power based on the first access link. The apparatus also includes a component for sending data to an electronic device via a sidelink based on the sidelink transmission power by the UE.

[0012] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon. The program code includes code for selecting a first access link among multiple access links by a user equipment (UE). Each of the multiple access links can be used for communication between the UE and a base station. The program code also includes code for determining a sidelink transmission power by the UE based on the first access link. The program code also includes code for sending data to an electronic device via a sidelink by the UE based on the sidelink transmission power.

[0013] In another aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes at least one processor and a memory coupled to the processor. The processor is configured to select a first access link from a plurality of access links by a user equipment (UE). Each of the plurality of access links can be used for communication between the UE and a base station. The processor is also configured to determine a side link transmission power based on the first access link by the UE. The processor is also configured to send data to an electronic device via a side link based on the side link transmission power by the UE.

[0014] In another aspect of the present disclosure, a method of wireless communication includes selecting, by a base station, a first access link from among a plurality of access links. Each of the plurality of access links may be used for communication between the base station and a user equipment (UE). The method also includes sending, by the base station, an indication of the first access link to the UE, the indication corresponding to a determination of a sidelink transmission power based on the first access link. The method also includes transmitting, by the base station, data to the UE via one of the plurality of access links while the UE communicates with an electronic device via a sidelink channel based on the sidelink transmission power.

[0015] In another aspect of the present disclosure, an apparatus configured for wireless communication includes a component for selecting, by a base station, a first access link from a plurality of access links. Each of the plurality of access links may be used for communication between the base station and a user equipment (UE). The apparatus also includes a component for sending, by the base station, an indication of the first access link to the UE, the indication corresponding to a determination of a sidelink transmission power based on the first access link. The method also includes a component for transmitting data to the UE via one of the plurality of access links by the base station while the UE communicates with the electronic device via a sidelink channel based on the sidelink transmission power.

[0016] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon. The program code includes code for selecting, by a base station, a first access link among a plurality of access links. Each of the plurality of access links may be used for communication between the base station and a user equipment (UE). The program code also includes code for sending, by the base station, an indication of the first access link to the UE, the indication corresponding to a determination of a sidelink transmission power based on the first access link. The program code also includes code for transmitting data to the UE via one of the plurality of access links by the base station while the UE communicates with the electronic device via a sidelink channel based on the sidelink transmission power.

[0017] In another aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes at least one processor and a memory coupled to the processor. The processor is configured to select a first access link from a plurality of access links by a base station. Each of the plurality of access links can be used for communication between a base station and a user equipment (UE). The processor is also configured to send an indication of the first access link to the UE by the base station, the indication corresponding to a determination of a sidelink transmission power based on the first access link. The processor is also configured to transmit data to the UE via one of the plurality of access links by the base station while the UE communicates with the electronic device via a sidelink channel based on the sidelink transmission power.

[0018] In another aspect of the present disclosure, a method of wireless communication includes determining, by a user equipment (UE), an adjustment value based on an access link for communication between the UE and a base station and based on a side link for communication between the UE and an electronic device. The method also includes determining, by the UE, a side link transmission power based on the adjustment value. The method also includes sending, by the UE, data to the electronic device via the side link based on the side link transmission power.

[0019] In another aspect of the present disclosure, an apparatus configured for wireless communication includes a component for determining, by a user equipment (UE), an adjustment value based on an access link for communication between the UE and a base station and based on a side link for communication between the UE and an electronic device. The apparatus also includes a component for determining, by the UE, a side link transmission power based on the adjustment value. The apparatus also includes a component for sending data to the electronic device via the side link based on the side link transmission power by the UE.

[0020] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon. The program code includes code for determining an adjustment value by a user equipment (UE) based on an access link for communication between the UE and a base station and based on a side link for communication between the UE and an electronic device. The program code also includes code for determining a side link transmission power based on the adjustment value by the UE. The program code also includes code for sending data to an electronic device via a side link based on the side link transmission power by the UE.

[0021] In another aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes at least one processor and a memory coupled to the processor. The processor is configured to determine an adjustment value by a user equipment (UE) based on an access link for communication between the UE and a base station and based on a side link for communication between the UE and an electronic device. The processor is also configured to determine a side link transmission power based on the adjustment value by the UE. The processor is also configured to send data to the electronic device via a side link based on the side link transmission power by the UE.

[0022] In another aspect of the present disclosure, a method of wireless communication includes selecting, by a base station, an adjustment value for a user equipment (UE) communicating with the base station via an access link. The method also includes sending, by the base station, an indication corresponding to the adjustment value to the UE via the access link, the indication corresponding to a determination of a sidelink transmission power based on the adjustment value. The method also includes transmitting, by the base station, data with the UE via the access link while the UE communicates with an electronic device via a sidelink channel based on the sidelink transmission power.

[0023] In another aspect of the present disclosure, an apparatus configured for wireless communication includes a component for selecting, by a base station, an adjustment value for a user equipment (UE) communicating with the base station via an access link. The apparatus also includes a component for sending, by the base station, to the UE via the access link, an indication corresponding to the adjustment value, the indication corresponding to a determination of a sidelink transmission power based on the adjustment value. The apparatus also includes a component for transmitting data by the base station to the UE via the access link while the UE communicates with an electronic device via a sidelink channel based on the sidelink transmission power.

[0024] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon. The program code includes code for selecting, by a base station, an adjustment value for a user equipment (UE) communicating with the base station via an access link. The program code also includes code for sending, by the base station, to the UE via the access link, an indication corresponding to the adjustment value, the indication corresponding to a determination of a sidelink transmission power based on the adjustment value. The program code also includes code for transmitting data by the base station to the UE via the access link while the UE is communicating with an electronic device via a sidelink channel based on the sidelink transmission power.

[0025] In another aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes at least one processor and a memory coupled to the processor. The processor is configured to select an adjustment value by a base station for a user equipment (UE) communicating with the base station via an access link. The processor is also configured to send an indication corresponding to the adjustment value to the UE via the access link by the base station, the indication corresponding to the determination of the side link transmission power based on the adjustment value. The processor is also configured to transmit data to the UE via the access link by the base station while the UE communicates with the electronic device via the side link channel based on the side link transmission power.

[0026] The foregoing has listed the features and technical advantages of the examples according to the present disclosure quite extensively so that the following detailed description can be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples can be easily used as the basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein, their organization and method of operation, and related advantages will be better understood from the following description. The purpose of providing each figure is for illustration and description, not as a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] A further understanding of the nature and advantages of the present disclosure may be achieved by reference to the following drawings. In the drawings, similar parts or features may have the same reference label. In addition, various components of the same type may be distinguished by following the reference label with a hyphen and a second label that distinguishes the similar components. If only the first reference label is used in the specification, the description applies to any one of the similar components having the same first reference label, regardless of the second reference label.

[0028] Figure 1 is a block diagram showing details of a wireless communication system.

[0029] Figure 2 is a block diagram showing a design of a base station and a UE configured according to one aspect of the present disclosure.

[0030] Figure 3 is a diagram showing a wireless communication system including a base station using directional wireless beams.

[0031] Figure 4 is a diagram showing a wireless communication system including a base station and a UE.

[0032] Figure 5 is a diagram showing a wireless communication system including a base station and a UE.

[0033] Figure 6 is a diagram showing a wireless communication system including a base station and a UE.

[0034] Figure 7 is a block diagram illustrating example blocks executed by a UE configured according to an aspect of the present disclosure.

[0035] Figure 8 is a block diagram illustrating example blocks executed by a base station configured according to an aspect of the present disclosure.

[0036] Fig. 9 is a block diagram illustrating example blocks executed by a UE configured according to an aspect of the present disclosure.

[0037] Fig.10 is a block diagram illustrating example blocks executed by a base station configured according to an aspect of the present disclosure.

[0038] Fig.11 is a block diagram conceptually illustrating a design of a UE according to some embodiments of the present disclosure.

[0039] Fig.12 is a block diagram conceptually illustrating a design of a base station configured in accordance with some embodiments of the present disclosure. DETAILED DESCRIPTION

[0040] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various possible configurations and is not intended to limit the scope of the present disclosure. Instead, the detailed description includes specific details for providing a thorough understanding of the subject matter of the present invention. It will be apparent to those skilled in the art that these specific details are not required in every case, and in some cases, well-known structures and components are shown in block diagram form for clarity of presentation.

[0041] The present disclosure generally relates to providing or participating in authorized shared access between two or more wireless communication systems (also referred to as wireless communication networks). In various embodiments, the technology and apparatus can be used for wireless communication networks, such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single carrier FDMA (SC-FDMA) networks, LTE networks, global system for mobile communications (GSM) networks, 5th generation (5G) or new radio (NR) networks (sometimes referred to as "5G NR" networks / systems / devices), and other communication networks. As described herein, the terms "network" and "system" can be used interchangeably.

[0042] OFDMA networks can implement radio technologies such as Evolved UTRA (E-UTRA), IEEE 802.11, IEEE802.16, IEEE802.20, flash-OFDM, etc. UTRA, E-UTRA, and GSM are part of the Universal Mobile Telecommunications System (UMTS). In particular, Long Term Evolution (LTE) is a version of UMTS that uses E-UTRA. UTRA, E-UTRA, GSM, UMTS, and LTE are described in documents provided by an organization named "3rd Generation Partnership Project" (3GPP), while cdma2000 is described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). These various radio technologies and standards are known or under development. For example, the 3rd Generation Partnership Project (3GPP) is a collaboration between a group of telecommunications associations to define globally applicable third generation (3G) mobile phone specifications. 3GPP Long Term Evolution (LTE) is a 3GPP project aimed at improving the Universal Mobile Telecommunications System (UMTS) mobile phone standard. 3GPP may define specifications for next generation mobile networks, mobile systems, and mobile devices. The present disclosure relates to the evolution of wireless technologies according to LTE, 4G, 5G, NR and above, which share access to wireless spectrum between networks using a set of new and different radio access technologies or radio air interfaces.

[0043] 5G networks contemplate multiple deployments, multiple spectrums, and multiple services and devices that can be implemented using a unified OFDM-based air interface. To achieve these goals, in addition to developing new radio technologies for 5G NR networks, further enhancements to LTE and LTE-A are also being considered. 5G NR will be able to scale to provide the following coverage: (1) Ultra-high density (e.g., about 1M nodes / km) 2), ultra-low complexity (e.g., about 10s of bits / second), ultra-low energy consumption (e.g., about 10+ years of battery life), and deep coverage to reach challenging locations; (2) including mission-critical control with strong security to protect sensitive personal, financial, or confidential information, ultra-high reliability (e.g., about 99.9999% reliability), ultra-low latency (e.g., about 1ms), and users with extensive mobility or lack of mobility; and (3) with enhanced mobile broadband, including extremely high capacity (e.g., about 10Tbps / km 2 ), extremely high data rates (e.g., multiple Gbps rates, 100+Mbps user experience rates), and deep perception with advanced discovery and optimization.

[0044] 5G NR devices, networks, and systems can be implemented to use optimized OFDM-based waveform features. These features can include scalable parameter sets and transmission time intervals (TTIs); a common, flexible framework to efficiently multiplex services and functions through dynamic, low-latency time division duplex (TDD) / frequency division duplex (FDD) designs; and advanced wireless technologies such as massive multiple-input multiple-output (MIMO), robust millimeter wave (mmWave) transmission, advanced channel coding, and device-centric mobility. The scalability of parameter sets in 5G NR, as well as the extension of subcarrier spacing, can effectively handle multiple services running across multiple spectrums and multiple deployments. For example, in various outdoor and macro coverage deployments of less than 3GHz FDD / TDD implementations, the subcarrier spacing may appear as 15kHz, such as bandwidths exceeding 1, 5, 10, 20MHz, etc. For other various outdoor and small cell coverage deployments of TDD greater than 3GHz, the subcarrier spacing may appear as 30kHz, exceeding 80 / 100MHz bandwidth. For various other indoor broadband implementations, using TDD in the unlicensed portion of the 5 GHz band, the subcarrier spacing may appear as 60 kHz, over 160 MHz of bandwidth. Finally, for various deployments using millimeter wave components to transmit with TDD at 28 GHz, the subcarrier spacing may appear as 120 kHz, over 500 MHz of bandwidth.

[0045] 5G NR's scalable parameter set facilitates scalable TTI for multiple latency and quality of service (QoS) requirements. For example, shorter TTIs can be used for low latency and high reliability, while longer TTIs can be used for higher spectral efficiency. Efficient multiplexing of long TTIs and short TTIs to allow transmission to start on symbol boundaries. 5G NR also considers a self-contained integrated subframe design with uplink / downlink scheduling information, data, and acknowledgment in the same subframe. The self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, adaptive uplink / downlink (which can be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet current business needs).

[0046] Various other aspects and features of the present disclosure are further described below. Obviously, the teachings of this article can be embodied in a variety of forms, and any specific structure, function, or both disclosed herein are only representative and non-restrictive. Based on the teachings of this article, it should be understood by those of ordinary skill in the art that one aspect disclosed herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement a device or practice a method. In addition, in addition to one or more of the aspects set forth herein, or different from one or more of the aspects set forth herein, other structures, functions, or structures and functions can be used to implement such a device or such a method can be practiced. For example, the method can be implemented as a part of a system, device, device, and / or implemented as instructions stored on a computer-readable medium for running on a processor or computer. In addition, an aspect can include at least one element of a claim.

[0047] Figure 1 is a block diagram illustrating a 5G network 100 including various base stations and UEs configured according to aspects of the present disclosure. The 5G network 100 includes multiple base stations 105 and other network entities. A base station may be a station that communicates with a UE and may also be referred to as an evolved Node B (eNB), a next generation eNB (gNB), an access point, etc. Each base station 105 may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to this particular geographic coverage area of ​​a base station and / or a base station subsystem serving that coverage area, depending on the context in which the term is used.

[0048] A base station may provide communication coverage for a macro cell or a small cell (such as a pico cell or a femto cell) and / or other types of cells. A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs that have a service subscription with a network provider. A small cell, such as a pico cell, will typically cover a relatively small geographic area and may allow unrestricted access by UEs that have a service subscription with a network provider. A small cell, such as a femto cell, will typically also cover a relatively small geographic area (e.g., a home) and, in addition to unrestricted access, may also provide restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of home users, etc.). A base station for a macro cell may be referred to as a macro base station. A base station for a small cell may be referred to as a small cell base station, a pico base station, a femto base station, or a home base station. In Figure 1 In the example shown. Figure 1 , base station 105d and base station 105e are conventional macro base stations, while base stations 105a-105c are macro base stations that implement one of 3-dimensional (3D), full-dimensional (FD), or massive MIMO. Base stations 105a-105c utilize their higher-dimensional MIMO capabilities to increase coverage and capacity using 3D beamforming in elevation and azimuth beamforming. Base station 105f is a small cell base station, which can be a home node or a portable access point. The base station can support one or more (e.g., two, three, four, etc.) cells.

[0049] The 5G network 100 may support synchronous or asynchronous operation. For synchronous operation, the base stations may have similar frame timing, and transmissions from different base stations may be approximately aligned in time. For asynchronous operation, the base stations may have different frame timing, and transmissions from different base stations may not be aligned in time.

[0050] UE 115 is scattered throughout the wireless network 100, and each UE can be stationary or mobile. UE can also be referred to as a terminal, a mobile station, a subscriber unit, a station, etc. UE can be a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a tablet computer, a laptop computer, a cordless phone, a wireless local loop (WLL) station, etc. In one aspect, the UE can be a device including a universal integrated circuit card (UICC). In another aspect, the UE can be a device that does not include a UICC. In some aspects, a UE that does not include a UICC can also be referred to as an Internet of Everything (IoE) or Internet of Things (IoT) device. UE 115a-115d is an example of a mobile smart phone type device that accesses the 5G network 100. UE can also be a machine that is specifically configured for connecting communications (including machine type communications (MTC), enhanced MTC (eMTC), narrowband Internet of Things (NB-IoT), etc.). UE 115e-115k is an example of various machines configured for accessing communications of the 5G network 100. The UE may be able to communicate with any type of base station (whether macro base station, small cell, etc.). Figure 1 In the present invention, lightning (e.g., communication link) indicates wireless transmission between the UE and a serving base station (the serving base station is a base station designated to serve the UE on the downlink and / or uplink), or expected transmission between base stations, and backhaul transmission between base stations.

[0051] In operation at the 5G network 100, base stations 105a-105c use 3D beamforming and coordinated spatial techniques (such as coordinated multipoint (CoMP) or multi-connectivity) to serve UE 115a and UE 115b. Macro base station 105d performs backhaul communications with base stations 105a-105c and small cell base station 105f. Macro base station 105d also transmits multicast services that are subscribed to and received by UE 115c and UE 115d. Such multicast services may include mobile TV or streaming video, or may include other services for providing community information, such as weather emergencies or alerts (such as Amber Alerts or Gray Alerts).

[0052] The 5G network 100 also supports mission-critical communications with ultra-reliable and redundant links for mission-critical devices, such as UE 115e, which is a drone. The redundant communication links with UE 115e include from macro base stations 105d and 105e and small cell base station 105f. Other machine-type devices, such as UE 115f (thermometer), UE 115g (smart meter), and UE 115h (wearable device), can communicate directly with base stations, such as small cell base station 105f and macro base station 105e, through the 5G network 100, or in a multi-hop configuration by communicating with another user device that relays its information to the network, such as UE 115f transmitting temperature measurement information to smart meter UE 115g, which is then reported to the network through small cell base station 105f. The 5G network 100 may also provide additional network efficiencies through dynamic, low-latency TDD / FDD communications, such as in a vehicle-to-vehicle (V2V) mesh network between UEs 115i-115k communicating with a macro base station 105e.

[0053] Figure 2 It shows that it can be Figure 1 1 and 115. A block diagram of a design of a base station 105 and a UE 115 for one of the base stations and one of the UEs in the base station 105. At the base station 105, a transmit processor 220 may receive data from a data source 212 and control information from a controller / processor 240. The control information may be for a PBCH, a PCFICH, a PHICH, a PDCCH, an EPDCCH, an MPDCCH, etc. The data may be for a PDSCH, etc. The transmit processor 220 may process (e.g., encode and symbol map) the data and the control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols, e.g., for PSS, SSS, and a cell-specific reference signal. A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols (if applicable), and may provide output symbol streams to modulators (MODs) 232a to 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (eg, convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a through 232t may be transmitted via antennas 234a through 234t, respectively.

[0054] At the UE 115, antennas 252a to 252r can receive downlink signals from the base station 105 and can provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator 254 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. The MIMO detector 256 can obtain received symbols from all demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. The receive processor 258 can process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 115 to the data sink 260, and provide decoded control information to the controller / processor 280.

[0055] On the uplink, at the UE 115, a transmit processor 264 may receive and process data from a data source 262 (e.g., for PUSCH) and control information from a controller / processor 280 (e.g., for PUCCH). The transmit processor 264 may also generate reference symbols for reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for SC-FDM, etc.), and transmitted to the base station 105. At the base station 105, the uplink signal from the UE 115 may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 115. The processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the controller / processor 240.

[0056] The controller / processors 240 and 280 may direct the operation at the base station 105 and the UE 115, respectively. The controller / processor 240 and / or other processors and modules at the base station 105 may perform or direct the execution of various processes for the techniques described herein, such as performing or directing Figure 9-10 The controller / processor 280 and / or other processors and modules at the UE 115 may also execute or direct the execution of the functional blocks shown in FIG. Figure 7-Figure 8 105 and UE 115. The execution of the functional blocks shown in the and / or other processes of the technology described herein. Memories 242 and 282 can store data and program codes for base station 105 and UE 115, respectively. Scheduler 244 can schedule UEs for data transmission on the downlink and / or uplink.

[0057] Wireless communication systems operated by different network operating entities (e.g., network operators) may share spectrum. In some cases, a network operating entity may be configured to use all of a designated shared spectrum for at least a period of time before another network operating entity uses all of a designated shared spectrum for a different period of time. Thus, to allow network operating entities to use the full designated shared spectrum, and to mitigate interfering communications between different network operating entities, certain resources (e.g., time) may be divided and allocated to different network operating entities for certain types of communications.

[0058] For example, a network operating entity may be allocated certain time resources reserved for exclusive communication by the network operating entity using the entire shared spectrum. A network operating entity may also be allocated other time resources where the entity is given a higher priority than other network operating entities to communicate using the shared spectrum. These time resources prioritized for use by the network operating entity may be used by other network operating entities on an opportunistic basis if the prioritized network operating entity does not use the resources. Additional time resources may be allocated to any network operator for use on an opportunistic basis.

[0059] Access to shared spectrum and arbitration of time resources between different network operating entities may be centrally controlled by a separate entity, autonomously determined by a predefined arbitration scheme, or dynamically determined based on interactions between wireless nodes of a network operator.

[0060] In some cases, the UE 115 and the base station 105 may operate in a shared radio band, which may include licensed or unlicensed (e.g., contention-based) spectrum. In the unlicensed frequency portion of the shared radio band, the UE 115 or the base station 105 may traditionally perform a medium sensing process to compete for access to the spectrum. For example, the UE 115 or the base station 105 may perform a listen-before-talk (LBT) process (such as a clear channel assessment (CCA)) before communicating to determine whether the shared channel is available. CCA may include an energy detection process for determining whether there are any other active transmissions. For example, a device may infer that a change in a received signal strength indicator (RSSI) of a power meter indicates that the channel is occupied. Specifically, a signal power concentrated in a certain bandwidth and exceeding a predetermined noise floor may indicate another wireless transmitter. CCA may also include detection of a specific sequence indicating channel use. For example, another device may send a specific preamble before sending a data sequence. In some cases, the LBT process may include a wireless node adjusting its own backoff window as a proxy for collisions based on the amount of energy detected on the channel and / or acknowledgement / negative acknowledgement (ACK / NACK) feedback for its own transmitted packets.

[0061] Using a medium sensing process to contend for access to an unlicensed shared spectrum may result in communication inefficiencies. This may be particularly evident when multiple network operating entities (e.g., network operators) attempt to access shared resources. In a 5G network 100, base stations 105 and UEs 115 may be operated by the same or different network operating entities. In some examples, a single base station 105 or UE 115 may be operated by more than one network operating entity. In other examples, each base station 105 and UE 115 may be operated by a single network operating entity. Requiring each base station 105 and UE 115 of different network operating entities to contend for shared resources may result in increased signaling overhead and communication delays.

[0062] Figure 3 An example of a timing diagram 300 for coordinating resource partitioning is shown. The timing diagram 300 includes a superframe 305, which may represent a fixed duration (e.g., 20 ms). The superframe 305 may repeat for a given communication session and may be used by a processor such as a reference processor. Figure 1 The wireless system of the described 5G network 100 uses. The superframe 305 can be divided into intervals such as an acquisition interval (A-INT) 310 and an arbitration interval 315. As described in more detail below, the A-INT 310 and the arbitration interval 315 can be subdivided into sub-intervals, designated for certain resource types, and allocated to different network operating entities to facilitate coordinated communication between different network operating entities. For example, the arbitration interval 315 can be divided into a plurality of sub-intervals 320. In addition, the superframe 305 can also be divided into a plurality of subframes 325 having a fixed duration (e.g., 1 ms). Although the timing diagram 300 shows three different network operating entities (e.g., operator A, operator B, operator C), the number of network operating entities using the superframe 305 for coordinated communication can be greater or less than the number illustrated in the timing diagram 300.

[0063] A-INT 310 can be a dedicated interval of superframe 305, which is reserved for exclusive communication of network operating entities. In some examples, each network operating entity can be allocated certain resources within A-INT 310 for exclusive communication. For example, resources 330-a can be reserved for exclusive communication of operator A (such as through base station 105a), resources 330-b can be reserved for exclusive communication of operator B (such as through base station 105b), and resources 330-c can be reserved for exclusive communication of operator C (such as through base station 105c). Since resource 330-a is reserved for exclusive communication of operator A, neither operator B nor operator C can communicate during resource 330-a, even if operator A chooses not to communicate during these resources. That is, access to proprietary resources is limited to designated network operators. Similar restrictions apply to resources 330-b of operator B and resources 330-c of operator C. Operator A's wireless nodes (eg, UE 115 or base station 105) may transmit any desired information, such as control information or data, during their exclusive resources 330-a.

[0064] When communicating via exclusive resources, the network operating entity does not need to perform any medium sensing procedures (e.g., listen before talk (LBT) or clear channel assessment (CCA)) because the network operating entity knows that the resources are reserved. Because only designated network operating entities can communicate via exclusive resources, the likelihood of interfering communications is reduced compared to relying solely on medium sensing techniques (e.g., no hidden node problem). In some examples, A-INT 310 is used to send control information, such as synchronization signals (e.g., SYNC signals), system information (e.g., system information blocks (SIBs)), paging information (e.g., physical broadcast channel (PBCH) messages), or random access information (e.g., random access channel (RACH) signals). In some examples, all wireless nodes associated with the network operating entity can transmit simultaneously during their exclusive resources.

[0065] In some examples, resources can be classified as being prioritized for certain network operation entities. Resources that are assigned priority for a certain network operation entity can be referred to as a guaranteed interval (G-INT) for the network operation entity. The resource interval used by the network operation entity during the G-INT can be referred to as a priority sub-interval. For example, resource 335-a can be prioritized for use by operator A and can therefore be referred to as operator A's G-INT (e.g., G-INT-OpA). Similarly, resource 335-b can be prioritized for operator B, resource 335-c can be prioritized for operator C, resource 335-d can be prioritized for operator A, resource 335-e can be prioritized for operator B, and resource 335-f can be prioritized for operator C.

[0066] Figure 3 The various G-INT resources shown in the diagram appear to be interleaved to illustrate their association with their respective network operating entities, but these resources may all be on the same frequency bandwidth. Therefore, if viewed along the time-frequency grid, the G-INT resources may appear as a continuous line within the superframe 305. This division of data may be an example of time division multiplexing (TDM). In addition, when resources appear in the same subinterval (e.g., resource 340-a and resource 335-b), these resources represent the same time resource relative to the superframe 305 (e.g., the resources occupy the same subinterval 320), but the resources are designated separately to illustrate that the same time resource can be classified differently for different operators.

[0067] When resources are assigned priority for a certain network operation entity (e.g., G-INT), the network operation entity can use these resources for communication without waiting or performing any medium sensing procedures (e.g., LBT or CCA). For example, the wireless node of operator A can freely transmit any data or control information during resource 335-a without interference from the wireless nodes of operator B or operator C.

[0068] The network operation entity may also signal another operator that it intends to use a particular G-INT. For example, referring to resource 335-a, operator A may signal operator B and operator C that it intends to use resource 335-a. Such signaling may be referred to as an activity indication. In addition, since operator A has priority on resource 335-a, operator A may be considered an operator with a higher priority than operator B and operator C. However, as described above, operator A does not have to send a signaling entity to other network operation entities to ensure interference-free transmission during resource 335-a because resource 335-a is preferentially allocated to operator A.

[0069] Similarly, a network operating entity may signal another network operating entity that it does not intend to use a particular G-INT. The signaling may also be referred to as an activity indication. For example, with reference to resource 335-b, operator B may signal operator A and operator C that it does not intend to use resource 335-b for communication, even if the resource is preferentially allocated to operator B. For resource 335-b, operator B may be considered to be a network operating entity with a higher priority than operator A and operator C. In this case, operators A and C may attempt to use the resources of subinterval 320 on an opportunistic basis. Therefore, from the perspective of operator A, the subinterval 320 containing resource 335-b may be considered to be an opportunity interval (O-INT) of operator A (e.g., O-INT-OpA). For purposes of illustration, resource 340-a may represent the O-INT of operator A. In addition, from the perspective of operator C, the same subinterval 320 may represent the O-INT of operator C with corresponding resource 340-b. Resources 340-a, 335-b, and 340-b all represent the same time resource (e.g., a particular subinterval 320), but are individually identified to indicate that the same resource is considered G-INT for some network operating entities but O-INT for other network operating entities.

[0070] In order to utilize resources on an opportunistic basis, operators A and C may perform a medium sensing process to check for communications on a particular channel before sending data. For example, if operator B decides not to use resource 335-b (e.g., G-INT-OpB), operator A may use those same resources (e.g., represented by resource 340-a) by first checking the channel for interference (e.g., LBT) and then sending data if the channel is clear. Similarly, if operator C wants to access resources on an opportunistic basis during subinterval 320 (e.g., using O-INT represented by resource 340-b) in response to an indication that operator B does not intend to use its G-INT, operator C may perform a medium sensing process and access the resource (if available). In some cases, two operators (e.g., operator A and operator C) may attempt to access the same resource, in which case the operators may employ a contention-based process to avoid interfering with communications. Operators may also have sub-priorities assigned to them that are designed to determine which operator can gain access to a resource if multiple operators attempt access simultaneously.

[0071] In some examples, a network operating entity may not intend to use a particular G-INT allocated to it, but may not issue an active indication conveying an intent not to use the resource. In this case, for a particular subinterval 320, a lower priority operating entity may be configured to monitor the channel to determine whether a higher priority operating entity is using the resource. If a lower priority operating entity determines, through LBT or a similar method, that a higher priority operating entity does not intend to use its G-INT resource, the lower priority operating entity may attempt to access the resource on an opportunistic basis, as described above.

[0072] In some examples, access to G-INT or O-INT may be followed by a reservation signal (eg, request to send (RTS) / clear to send (CTS)) and a contention window (CW) may be randomly selected between one and the total number of operating entities.

[0073] In some examples, the operating entity may employ or be compatible with coordinated multipoint (CoMP) communications. For example, the operating entity may use CoMP and dynamic time division duplexing (TDD) in G-INT and opportunistically use CoMP in O-INT as needed.

[0074] Figure 3 In the example shown, each subinterval 320 includes a G-INT of one of operators A, B, or C. However, in some cases, one or more subintervals 320 may include resources that are neither reserved for exclusive use nor reserved for priority use (e.g., unallocated resources). Such unallocated resources may be considered an O-INT for any network operating entity and may be accessed on an opportunistic basis as described above.

[0075] In some examples, each subframe 325 can contain 14 symbols (e.g., 250-μs for 60 kHz tone spacing). These subframes 325 can be independent, self-contained Interval-Cs (ITCs), or the subframes 325 can be part of a longer ITC. An ITC can be a self-contained transmission that starts with a downlink transmission and ends with an uplink transmission. In some embodiments, an ITC can contain one or more subframes 325 that operate continuously while the medium is occupied. In some cases, assuming 250-μs transmission opportunities, there can be up to eight network operators in an A-INT 310 (e.g., with a duration of 2 ms).

[0076] although Figure 3Three operators are shown in the figure, but it should be understood that fewer or more network operating entities may be configured to operate in a coordinated manner as described above. In some cases, the position of each operator's G-INT, O-INT, or A-INT within the superframe 305 is autonomously determined based on the number of network operating entities active in the system. For example, if there is only one network operating entity, each subinterval 320 may be occupied by the G-INT of that single network operating entity, or the subinterval 320 may alternate between the G-INT and O-INT of the network operating entity to allow other network operating entities to enter. If there are two network operating entities, the subinterval 320 may alternate between the G-INT of the first network operating entity and the G-INT of the second network operating entity. If there are three network operating entities, the G-INT and O-INT of each network operating entity may be designed as follows. Figure 3 As shown. If there are four network operating entities, the first four subintervals 320 may include consecutive G-INTs for the four network operating entities, while the remaining two subintervals 320 may contain O-INTs. Similarly, if there are five network operating entities, the first five subintervals 320 may include consecutive G-INTs for the five network operating entities, while the remaining subintervals 320 may contain O-INTs. If there are six network operating entities, all six subintervals 320 may include consecutive G-INTs for each network operating entity. It should be understood that these examples are for illustration purposes only, and other autonomously determined interval allocations may be used.

[0077] It should be understood that reference Figure 3 The coordination framework described is for illustration purposes only. For example, the duration of superframe 305 can be more or less than 20 ms. In addition, the number, duration, and location of subintervals 320 and subframes 325 can be different from the configuration shown. In addition, the type of resource designation (e.g., exclusive, priority, unallocated) can be different or include more or fewer sub-designations.

[0078] Figure 4An example of a wireless communication system 400 supporting sidelink TX power control according to aspects of the present disclosure is shown. In some examples, the wireless communication system 400 can implement aspects of the wireless communication system 100. For example, the wireless communication system 400 may include a UE 115, a base station 105, and an electronic device 415. The electronic device 415 may include another UE. Although one UE and one base station are shown, in other implementations, the wireless communication system 400 may include multiple UEs 115, multiple base stations 105, or both. The UE 115 and the base station 105 may be configured to communicate via one or more access links (such as a representative first access link 480 and a representative second access link 482). The UE and the electronic device 415 may be configured to communicate via a side link 486.

[0079] UE 115 includes a processor 402, a memory 404, a transmitter 410, a receiver 412, a beam relationship calculator 413, and a sidelink open-loop power controller 414. Processor 402 may be configured to execute instructions stored at memory 404 to perform operations described herein. In some implementations, processor 402 includes or corresponds to controller / processor 280, and memory 404 includes or corresponds to memory 282. Memory 404 may also be configured to store sidelink TX power values ​​406 and beam information 408, such as one or more beam patterns, one or more beam gains, one or more beamforming directions, etc.

[0080] The transmitter 410 is configured to send data to one or more other devices, and the receiver 412 is configured to receive data from one or more other devices. For example, the transmitter 410 can send data via a network (e.g., a wired network, a wireless network, or a combination thereof), and the receiver 412 can receive data via a network (e.g., a wired network, a wireless network, or a combination thereof). For example, the UE 115 can be configured to send and / or receive data via: a direct device-to-device connection, a local area network (LAN), a wide area network (WAN), a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the above, or any other communication network now known or later developed that allows two or more electronic devices to communicate therein. In some implementations, the transmitter 410 and the receiver 412 can be replaced with a transceiver. Additionally or alternatively, the transmitter 410, the receiver 412, or both may include or correspond to reference Figure 2 One or more components of UE 115 are described.

[0081] The beam relationship calculator 413 is configured to determine the relationship information between two or more links or beams (e.g., beam patterns). In some aspects, the relationship information may include or correspond to a relationship parameter (e.g., a spatial relationship parameter, an interference parameter, etc.) or a relationship value (e.g., a spatial degree, an amount of interference, etc.). For example, the beam relationship calculator 413 is configured to determine the relationship information. The relationship may be based on the radiation pattern of the downlink (DL) beam (also referred to as an access link beam or access beam) corresponding to the first access link, the radiation pattern of the side link beam corresponding to the side link, or both. Additionally or alternatively, the relationship may be based on the direction of the peak gain of the DL beam, the direction of the peak gain of the side link beam, or both. In some aspects, the beam relationship calculator 413 determines which access link beam in the multiple beams corresponding to the multiple access links is closest to the side link beam. For example, the beam relationship calculator 413 may determine which access link beam in the multiple beams corresponding to the multiple access links is closest to the side link beam based on the spatial relationship between each access link beam and the side link beam. The spatial relationship between two beams may be determined using beam information 408 .

[0082] The sidelink open loop power controller 414 is configured to determine the sidelink TX power value 406. Additionally, the sidelink open loop power controller 414 is configured to determine the sidelink transmission power based on an access link beam of the first access link 480 (eg, the selected access link).

[0083] The base station 105 includes a processor 430, a memory 432, a transmitter 434, a receiver 436, and an interference calculator 438. The processor 430 may be configured to execute instructions stored at the memory 432 to perform the operations described herein. In some implementations, the processor 430 includes or corresponds to the controller / processor 240, and the memory 432 includes or corresponds to the memory 242. The memory 432 may also be configured to store one or more adjustment values ​​433, as further described herein. The one or more adjustment values ​​433 may be provided to the UE 115 for use by the UE 115 in determining the sidelink TX power value 406.

[0084] The transmitter 434 is configured to send data to one or more other devices, and the receiver 436 is configured to receive data from one or more other devices. For example, the transmitter 434 can send data via a network (such as a wired network, a wireless network, or a combination thereof), and the receiver 436 can receive data via a network (such as a wired network, a wireless network, or a combination thereof). For example, the base station 105 can be configured to send and / or receive data via: a direct device-to-device connection, a local area network (LAN), a wide area network (WAN), a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the above, or any other communication network now known or later developed that allows two or more electronic devices to communicate therein. In some implementations, the transmitter 434 and the receiver 436 can be replaced with a transceiver. Additionally or alternatively, the transmitter 434, the receiver 436, or both may include or correspond to reference Figure 2 One or more components of base station 105 are described.

[0085] The interference calculator 438 is configured to determine interference corresponding to (eg, experienced by) one or more access links. For example, the interference calculator 438 may be configured to determine an amount of interference for the first access link 480, the second access link 482, or both.

[0086] The electronic device 415 may be configured to communicate with the UE 115 and the base station 105. Note that the electronic device 415 may include one or more components and / or be configured to perform one or more operations as described with respect to the UE 115 and the base station 105.

[0087] During operation of the wireless communication system 400, one or more access links (e.g., 480, 482) can be used for communication between the UE 115 and the base station 105. Additionally, a side link 486 can be used for communication between the UE 115 and the electronic device 415. In some implementations, the frequency range used for the side link 486 is within the same frequency range that can be used for communication via the one or more access links. The UE 115 can determine and use a side link TX power value 406 for communication via the side link 486. In some implementations, the UE 115 can use a side link open loop power controller 414 to determine the side link TX power value 406.

[0088] In some implementations, the UE 115 may communicate with the base station 105 via a single access link, such as the first access link 480. In such implementations, the UE 115 may determine the side link TX power value 406 based on a target receive (RX) power, a downlink (DL) path loss, and a side link (SL) path loss. For illustration, the target RX power may be determined by the UE 115, determined by the electronic device 415, determined by the base station 105 (and provided to the UE 115 by the base station 105), or negotiated between the UE 115 and the electronic device 415, as illustrative, non-limiting examples. The DL path loss may include or correspond to a path loss corresponding to the first access link 480, and the SL path loss may include or correspond to a path loss corresponding to the side link 486. The DL path loss may be determined by the UE 115, or determined by the base station 105 and communicated to the UE 115. The SL path loss may be determined by the UE 115, or determined by the electronic device 415 and communicated to the UE 115. The sidelink open-loop power controller 414 may be configured to determine the sidelink TX power value 406 as:

[0089] SL Tx power = min{target Rx power + DL path loss, target Rx power + SL path loss}, where SL TX power is the side link TX power value 406, and min{} is the minimum value selection operation.

[0090] As an illustrative first example, target Rx power = -80dBm, DL path loss = 100dB, SL path loss = 80dB. Note that such values ​​are used herein for illustration and are not intended to be limiting. In the first example, the side link open-loop power controller 414 calculates the side link TX power 406 as: SL Tx power = min{target Rx power + DL path loss, target Rx power + SL path loss} = min{-80dBm + 100dB, -80dBm + 80dB} = min{20dBm, 0dBm}. In the first example, the SL Tx power (e.g., 406) is 0dBm (using the minimum of the two power values). Note that in the first example, the DL path loss is much greater than the SL path loss, and transmitting at a power that "matches" the SL path loss does not cause significant interference to the DL; this is because the downlink path loss is much greater than the side link path loss.

[0091] As an illustrative second example, target Rx power = -80dBm, DL path loss = 80dB, SL path loss = 100dB. Note that such values ​​are used herein for illustration and are not intended to be limiting. In the second example, the side link open-loop power controller 414 calculates the side link TX power 406 as: SL Tx power = min{target Rx power + DL path loss, target Rx power + SL path loss} = min{-80dBm + 80dB, -80dBm + 100dB} = min{0dBm, 20dBm}. In this case, the SL Tx power is also 0dBm, but does not correspond to a transmit power that "matches" the SL path loss, because if so, then interference (e.g., significant interference) will be generated to the access link 480. Note that if only the SL path loss is considered, the SL Tx power will be 20dBm, and interference may occur to the first access link 480.

[0092] Reference Figure 5 , shows an example of a system 400 in which multiple access links (e.g., a first access link 480 and a second access link 482) exist between a UE 115 and a base station 105. For example, Figure 5 It can be understood to illustrate the use of millimeter waves, where the base station 105 and the UE 115 have multiple beam pairs for access links (e.g., two, three or more access links).

[0093] like Figure 5 As shown in , a first access link 480 between UE 115 and base station 105 uses UE beam 2 (B2) of UE 115 and a corresponding base station beam of base station 105. The first access link 480 may have a corresponding DL path loss 580 (e.g., a beamformed DL path loss). A second access link 482 between UE 115 and base station 105 uses UE beam 3 (B3) of UE 115 and a corresponding base station beam of base station 105. The second access link 482 may have a corresponding DL path loss 582 (e.g., a beamformed DL path loss). Because access links 480, 482 have different beamforming, they have different corresponding downlink path losses. A side link 486 between UE 115 and electronic device 415 uses UE beam 1 (B1) of UE 115 and a corresponding device beam of electronic device 415. The side link 486 may have a corresponding SL path loss 586 (eg, a beamformed SL path loss), which may correspond to a degree of signal attenuation when the UE 115 and the electronic device 415 transmit and receive via the side link 486 using their respective beams.

[0094] The sidelink open-loop power controller 414 may be configured to determine the sidelink TX power value 406 using a selected one of the first access link 480 and the second access link 482. The selection of a particular access link from the plurality of access links may be determined based on a relationship between each access link beam (e.g., B2, B3) in the plurality of beams corresponding to the plurality of access links and a side link beam (e.g., B1) corresponding to the side link 486. For example, the beam relationship calculator 413 may determine a relationship between each access link beam in the plurality of beams corresponding to the plurality of access links and the side link beam corresponding to the side link 486. In some implementations, the relationship may be a spatial relationship as described herein. For example, the beam relationship calculator 413 may determine an angular spatial relationship between each access link beam and the side link beam, and may select a particular access link having an access beam corresponding to or having the lowest angular spatial relationship value - identifying and selecting which access link is "closest" to the side link 486 in angular space. In some implementations, the angular spatial relationship value between two links (eg, two beams) can be determined based on the directions of the peak gains of the two links (eg, the two beams).

[0095] like Figure 5 , the first access link 480 may be determined to be “closest” to the side link 486. For example, a first angular spatial relationship value between a first access link beam (B2) of the first access link 480 and a side link beam (B1) of the side link 486 may be less than a second angular spatial relationship value between a second access link beam (B3) of the second access link 482 and a side link beam (B1) of the side link 486. In this case, the side link open-loop power controller 414 calculates the side link TX power 406 as: SL Tx power = min{target Rx power + DL path loss, target Rx power + SL path loss}, where the DL path loss is the first DL path loss 580.

[0096] Reference Figure 4In some implementations, where there are multiple access links (e.g., a first access link 480 and a second access link 482) between the UE 115 and the base station 105, the base station 105 provides an indication 422 (e.g., data or a message) indicating which access link the sidelink open-loop power controller 414 is to use to determine the sidelink TX power value 406. For example, the base station 105 (e.g., the interference calculator 438) can determine an interference measurement at the base station 105 for each access link. The base station 105 can select a particular access link that receives the greatest amount of interference from the side link. Alternatively, the base station 105 can select a particular access link as an active or primary access link for communications between the base station 105 and the UE 115. Although the use of interference measurements at the base station 105 is described, it should be noted that the UE 115 can also calculate interference measurements for one or more access links at the UE 115, and a particular access link can be selected based on the interference measurements calculated at the UE 115, as described with reference to the base station 105.

[0097] Reference Figure 6 , shows an example of a system 400 in which an adjustment amount is used to determine a side link TX power value 406. The "adjustment amount" (e.g., adjustment value 433) can correspond to the signal power that will leak from the side link beam into the direction to which the access link beam is pointed, as described herein. Figure 6 As shown in , a side link beam 602 (e.g., B1) of a side link 486 overlaps an access link beam (e.g., B2) of an access link 480. The access link beam (e.g., DL beam) has a peak gain 608 in a first direction (e.g., a first angular position). In some implementations, the adjustment amount may be determined as a difference between the peak gain 608 of the access link beam and a gain 610 of the side link beam in a direction of the peak gain 608 of the access link beam (e.g., the first direction). The gain 610 may be determined using the beam information 408 and a spatial difference (e.g., an angle) between the first direction and the second direction. If the peak gain 604 of the side link beam 602 is 8 dB, the peak gain 608 of the access link beam is 16 dB, and the gain 610 of the side link beam 602 in the second direction is 3 dB, then the adjustment amount = peak gain 608 - gain 610 = 16 dB - 3 dB = 13 dB. A signal beamformed with the side link beam 602 propagating in the direction of the peak gain 608 will be received 13 dB weaker than a signal beamformed with the access link beam propagating in the same direction. The side link open loop power controller 414 may be configured to determine the side link TX power value 406 as:

[0098] SL TX power = min{target Rx power + DL path loss + adjustment value, target Rx power + SL path loss}.

[0099] As an illustrative third example, target Rx power = -80dBm, DL path loss = 80dB, SL path loss = 100dB and adjustment value = 13dB. It should be noted that such values ​​are used herein for illustration and are not intended to be limiting. In the third example, the side link open-loop power controller 414 calculates the side link TX power 406 as: SL TX power = min{target Rx power + DL path loss + "adjustment value", target Rx power + SL path loss} = min{-80dBm + 80dB + 13dB, -80dBm + 100dB} = min{13dBm, 20dBm} = 13dBm. When the third example is compared with the second example in which the SL TX power (e.g., 406) is 0dBm (using the minimum of the two power values), the third example with a SL TX power of 13dBm (e.g., 406) is greater than 0dBm, which means that the UE 115 can transmit at a higher power.

[0100] Reference Figure 4 In some implementations, the base station 105 provides an indication 422 (e.g., data or a message) indicating an adjustment amount to be used by the UE 115 to determine the sidelink TX power value 406. In some implementations, the base station 105 may select the adjustment amount to be a predetermined value such as a default amount. In some implementations, if the side link 486 and the access link (e.g., 480) are using different beams, the base station 105 may select the adjustment amount to be a default value such as a non-zero value. Alternatively, if the side link 486 and the access link (e.g., 480) are using the same beam, the base station 105 may select the adjustment amount to be zero (or no adjustment).

[0101] In some aspects, the base station 105 may indicate or the UE 115 may determine to selectively apply the adjustment amount. For example, the base station 105 may indicate that the UE 115 uses the adjustment amount for a period of time. Alternatively, the UE 115 may determine to use the adjustment amount within the time period independently of the base station 105. In some implementations, the base station 105 may indicate the adjustment amount to be used by the UE 115 and may then indicate that the UE 115 no longer uses the adjustment amount, such as when the interference measured at the base station 105 about the access link is greater than or equal to a threshold. In some aspects, if a particular access link is selected by the UE 115 for calculating the side link TX power value 406, the base station 105 may indicate the use of the adjustment value 433 (e.g., the adjustment amount). For example, the base station 105 may indicate to the UE 115 the use of the adjustment value when the primary access link is selected, or alternatively, instruct the UE 115 to use the adjustment value when a non-primary access link (e.g., a secondary or backup access link) is selected. In some implementations, the indication 422 from the base station 105 to the UE 115 may indicate which access link to use to calculate the sidelink TX power value 406, the adjustment amount to apply, the time period for which the sidelink TX power value 406 is to be applied, or a combination thereof.

[0102] therefore, Figure 4-Figure 6 Sidelink TX power control is described. For example, sidelink power control can be used with mmWave, such as when beamforming is used and there are multiple access links between base station 105 and UE 115. Techniques described herein can enable UE 115 to use higher sidelink TX power compared to conventional approaches. For example, UE 115 can consider the relationship (such as the relationship of angle or radiation pattern) between side link 486 (e.g., side link beam) and access link (e.g., access link beam) to determine the sidelink TX power.

[0103] Figure 7 and 8 is a block diagram illustrating example blocks executed by a UE configured according to aspects of the present disclosure. The example blocks will also be related to Fig.11 A UE 115 is shown for description. Fig.11 1 is a block diagram illustrating a UE 115 configured according to one aspect of the present disclosure. The UE 115 includes Figure 2115. For example, the UE 115 includes a controller / processor 280 that operates to execute logic or computer instructions stored in a memory 282 and controls the components of the UE 115 that provide the features and functions of the UE 115. The UE 115 sends and receives signals via wireless radios 1100a-r and antennas 252a-r under the control of the controller / processor 280. The wireless radios 1100a-r include the following: Figure 2 104, and 106. The various components and hardware shown for UE 115 in FIG. 104 include modulators / demodulators 254a-r, MIMO detectors 256, receive processors 258, transmit processors 264, and TX MIMO processors 266. As shown, memory 282 may include access link selection logic 1102, beam information 1103, side link open loop power control logic 1104, beam relationship calculation logic 1105, and timer 1106. Access link selection logic 1102 may include or correspond to (multiple) processors, beam relationship calculator 413, or both. Beam information 1103 may include or correspond to beam information 408. Side link open loop power control logic 1104 may include or correspond to side link open loop power controller 414. Beam relationship calculation logic 1105 may include or correspond to beam relationship calculator 413. UE 115 may receive a beam from a base station such as Fig.12 The base station 105 shown in FIG. 1 receives signals and / or sends signals to the base station.

[0104] Reference Figure 7 , at block 700, the UE selects a first access link from a plurality of access links, each of which may be used for communication between the UE and the base station. For illustration, the plurality of access links may include or correspond to the access links 480, 482. For example, the UE 115 may communicate with the base station 105 using the plurality of access links via the wireless radios 1100a-r and the antennas 252a-r. Communication via the plurality of access links may be controlled by the controller / processor 280. In some implementations, each of the plurality of access links may be active and used for communication between the UE and the base station. For illustration, the plurality of access links may include a first access link and a second access link that are simultaneously active and used for communication between the UE and the base station.

[0105] In some aspects, the first access link is selected based on a relationship between a first access link beam of the first access link and a side link beam of a side link (e.g., 486). For example, the UE 115 may execute access link selection logic 1102 stored in the memory 282 under the control of the controller / processor 240 to select the first access link. The UE 115 may communicate with an electronic device (e.g., 415) via the side link. The electronic device may include another UE.

[0106] In some aspects, the relationship may include or correspond to a relationship parameter (e.g., a spatial relationship parameter, an interference parameter, etc.) or a relationship value (e.g., a spatial degree, an amount of interference, etc.). For example, the UE 115 may execute the beam relationship calculation logic 1105 stored in the memory 282 under the control of the controller / processor 240 to determine the relationship. The beam relationship calculation logic 1105 may include or correspond to the beam relationship calculator 413. The relationship may be based on a radiation pattern of a UE access link beam corresponding to the first access link, a radiation pattern of a side link beam corresponding to the side link, or both. Additionally or alternatively, the relationship may be based on a direction of a peak gain of the UE access link beam, a direction of a peak gain of the side link beam, or both.

[0107] In some aspects, the UE determines which of a plurality of access links (e.g., a plurality of UE access link beams) is closest to a side link (e.g., a side link beam). For example, the beam relationship calculation logic 1105 may determine which of the plurality of access links is closest to the side link based on a spatial relationship between each UE access link beam and the side link beam. The spatial relationship between the two links may be determined using beam information 1103. The beam information may include or correspond to beam information 408. As an example of determining a spatial relationship, the beam relationship calculation logic 1105 may determine a first value corresponding to a first angular distance between a first UE access link beam of a first access link (e.g., 480) and a side link beam of a side link (e.g., 486), and may determine a second value corresponding to a second angular distance between a second UE access link beam of a second access link (e.g., 482) among a plurality of UE beams corresponding to the plurality of access links and a side link beam corresponding to the side link (e.g., 486). In a specific implementation, the first value is determined based on a first direction of a peak gain of a first UE access link beam corresponding to a first access link and a second direction of a peak gain of a side link beam corresponding to a side link. Additionally or alternatively, the second value may be determined based on a third direction of a peak gain of a second UE access link beam corresponding to a second access link and based on the second direction of the peak gain of the side link beam.

[0108] The beam relationship calculation logic 1105, the access link selection logic 1102, or both may select the link closest to the side link based on one or more comparisons. For example, the beam relationship calculation logic 1105, the access link selection logic 1102, or both may determine whether the first value is less than the second value. If the first value is less than the second value, the first access link may be determined to be closer to the side link than the second access link.

[0109] At block 701, the UE determines a sidelink transmission power based on a first access link. For example, the UE 115 may execute a sidelink open-loop power control logic 1104 stored in the memory 282 under the control of the controller / processor 240 to determine the sidelink transmission power. The sidelink open-loop power control logic 1104 may include or correspond to the sidelink open-loop power controller 414. The sidelink open-loop power control logic 1104 may determine the sidelink transmission power based on a first access link (e.g., a selected access link). Additionally or alternatively, the sidelink open-loop power control logic 1104 may not determine the sidelink transmission power based on an unselected access link in the plurality of links.

[0110] In some aspects, determining the sidelink transmission power (e.g., 406) includes performing sidelink open-loop power control. As an illustrative, non-limiting example, determining the sidelink transmission power may include determining a first candidate value based on a target received power (e.g., target RX power) and a downlink (DL) path loss (e.g., 580), determining a second candidate value based on the target received power and the sidelink path loss (e.g., 586), and selecting a minimum of the first candidate value and the second candidate value as the sidelink transmission power (e.g., 406). In such an implementation, the sidelink open-loop power control logic 1104 may be configured to determine a DL path loss, which may include a DL beamforming path loss, and determine a sidelink path loss, which may include a sidelink beamforming path loss.

[0111] At block 702, the UE transmits data to the electronic device via a side link based on the side link transmission power. For example, the UE 115 may communicate with an electronic device (such as the electronic device 415) using a side link via the wireless radio 1100a-r and the antenna 252a-r. Communication via the side link may be controlled by the controller / processor 280.

[0112] In some aspects, the UE may receive an indication of the first access link from the base station 105. In such an implementation, the access link selection logic 1102 may select the first access link in response to the indication. Additionally or alternatively, the UE may receive an indication of the adjustment value from the base station 105. In such an implementation, the sidelink transmission power (e.g., 406) may be determined based on the adjustment value.

[0113] Reference Figure 8 At block 800, the UE determines an adjustment value based on an access link used for communication between the UE and the base station and based on a side link used for communication between the UE and the electronic device. The electronic device (e.g., 415) may include another UE. For example, the UE 115 may communicate with an electronic device (such as the electronic device 415) using a side link via the wireless radio 1100a-r and the antenna 252a-r. Communication via the side link may be controlled by the controller / processor 280. In some aspects, the UE 115 may receive an indication of the adjustment value from the base station.

[0114] In some aspects, the UE 115 may execute beam relationship calculation logic 1105 stored in the memory 282 under the control of the controller / processor 240 to determine the adjustment value. The adjustment value may be determined based on a relationship between an access link and a side link. As an illustrative, non-limiting example, the relationship includes a spatial relationship between an access link (e.g., 480) corresponding to a UE access link beam having a peak gain (e.g., 608) and a side link (e.g., 486) corresponding to a side link beam having a peak gain (e.g., 604). The beam relationship calculation logic 1105 may determine the gain of the side link beam (e.g., 610) in the direction of the peak gain of the access link beam. For example, the beam relationship calculation logic 1105 may use beam information 1103 (such as beam pattern information) to perform one or more calculations to determine the gain (e.g., 610). The adjustment value corresponds to the difference between the peak gain of the access link beam and the gain of the side link beam in the direction of the peak gain of the access link beam.

[0115] At block 801, the UE determines a sidelink transmission power based on the adjustment value. For example, the UE 115 may execute a sidelink open-loop power control logic 1104 stored in the memory 282 under the control of the controller / processor 240 to determine the sidelink transmission power (e.g., 406). The sidelink open-loop power control logic 1104 may include or correspond to the sidelink open-loop power controller 414. The sidelink open-loop power control logic 1104 may perform a sidelink open-loop sidelink power control based on the adjustment value. In some implementations, in order to determine the sidelink transmission power, the sidelink open-loop power control logic 1104 may determine a first candidate value based on a target received power, a downlink (DL) path loss, and an adjustment value, and determine a second candidate value based on the target received power and the sidelink path loss. The sidelink open-loop power control logic 1104 may select a minimum value of the first candidate value and the second candidate value as the sidelink transmission power. In such an implementation, the sidelink open loop power control logic 1104 or the beam relationship calculation logic 1105 may determine a DL path loss including a path loss for DL ​​beamforming, and determine a sidelink path loss including a path loss for sidelink beamforming.

[0116] At block 802, the UE transmits data to the electronic device via a side link based on the side link transmission power. For example, the UE 115 may communicate with an electronic device (such as the electronic device 415) using a side link via the wireless radio 1100a-r and the antenna 252a-r. Communication via the side link may be controlled by the controller / processor 280.

[0117] In some aspects, the UE 115 may determine the third candidate value based on the target received power and the downlink (DL) path loss. In such an implementation, if the third candidate value is less than the selected minimum value, the UE 115 may adjust the sidelink transmission power to the third candidate value. For example, the UE 115 may adjust the sidelink transmission power to the third candidate value in response to a notification from the base station that interference on the access link from the sidelink transmission is greater than or equal to a threshold.

[0118] It should be noted that reference Figures 7 and 8 One or more blocks (or operations) described in Figures 7 and 8 A combination of one or more blocks (or operations) with another in. For example, Figure 7 One or more blocks in the Figure 8 Additionally or alternatively, the above reference Figures 1 to 6 One or more of the operations described may be combined with reference to Figure 7 , Figure 8 ,or Figure 7 and Figure 8 A combination describes a combination of one or more operations.

[0119] Fig. 9 and 10 is a block diagram illustrating example blocks executed by a base station configured according to aspects of the present disclosure. Fig.12 The example blocks are described with reference to the base station 105 shown in FIG. Fig.12 1 is a block diagram illustrating a base station 105 configured according to one aspect of the present disclosure. The base station 105 includes Figure 2 1. The base station 105 of FIG. 105 is a schematic diagram of a base station 105. For example, the base station 105 includes a controller / processor 240 that operates to execute logic or computer instructions stored in a memory 242 and controls components of the base station 105 that provide the features and functions of the base station 105. The base station 105 transmits and receives signals via wireless radios 1200a-t and antennas 234a-t under the control of the controller / processor 240. The wireless radios 1200a-t include, for example, Figure 2 The various components and hardware of the base station 105 are shown, including modulators / demodulators 232a-t, transmit processors 220, TX MIMO processors 230, MIMO detectors 236, and receive processors 238. As shown, memory 242 may include one or more adjustment values ​​1202, interference calculator 1203, and link selection logic 1204. The one or more adjustment values ​​1202 may include or correspond to one or more adjustment values ​​433. Interference calculator 1203 may include or correspond to interference calculator 438. Link selection logic 1204 may include or correspond to processor(s) 430. The base station 105 may receive a UE (such as Fig.11 115) shown in the figure receives signals and / or sends signals to the UE.

[0120] Reference Fig. 9 , at box 900, the base station selects a first access link from a plurality of access links, each of which can be used for communication between the base station and a user equipment (UE). For example, the base station 105 can execute link selection logic 1204 stored in the memory 242 under the control of the controller / processor 240 to select the first access link (e.g., 480). In some implementations, the link selection logic 1204 can select the first access link based on a determination that the first access link is designated as a primary access link (of the plurality of access links). In some implementations, each of the plurality of access links can be active and used for communication between the UE and the base station. For illustration, the plurality of access links can include a first access link and a second access link that are simultaneously active and used for communication between the UE and the base station.

[0121] In some aspects, the first access link is selected based on the interference corresponding to the first access link. For example, the base station 105 can execute the interference calculator 1203 stored in the memory 242 under the control of the controller / processor 240 to determine the interference corresponding to the access link for each of the one or more access links. For illustration, the interference calculator 1203 can be configured to determine a first interference value corresponding to the first access link and determine a second interference value corresponding to the second access link in the plurality of access links. The link selection logic 1204 can be configured to perform a comparison between the first interference value and the second interference value. For example, the link selection logic 1204 can select the first access link based on the first interference value being greater than the second interference value.

[0122] At block 901, a base station sends an indication of a first access link to a UE, the indication corresponding to a determination of a sidelink transmission power based on the first access link. For example, the base station 105 can communicate with the UE 115 using the access link via the wireless radio 1200a-r and the antennas 234a-r. The communication via the access link can be controlled by the controller / processor 240. In some aspects, the indication also includes an adjustment value to be applied by the UE to determine the sidelink transmission power (e.g., 406).

[0123] At block 902, a base station transmits data with a UE via one of a plurality of access links while the UE communicates with the electronic device via a sidelink channel based on a sidelink transmission power. For example, the UE 115 may communicate with an electronic device such as an electronic device (e.g., 415) using a sidelink via wireless radios 1100a-r and antennas 252a-r.

[0124] Reference Fig.10 , at block 1000, the base station selects an adjustment value for a user equipment (UE) communicating with the base station via an access link. For example, the base station 105 may execute link selection logic 1204 stored in memory 242 under the control of the controller / processor 240 to select an adjustment value (e.g., 406) from one or more adjustment values ​​1202. In some aspects, the adjustment value is a predetermined value such as 1 dB, 2 dB, 3 dB, 5 dB, 10 dB, or other values. Additionally or alternatively, the adjustment value may be determined based on an amount of interference corresponding to the access link. For example, the base station 105 may execute an interference calculator stored in memory 242 under the control of the controller / processor 240 to determine the amount of interference. In some implementations, the link selection logic 1204 may select a default value based on the amount of interference. For example, the base station 105 may select a predetermined value that is closest to the interference value.

[0125] At block 1001, the base station sends an indication corresponding to the adjustment value to the UE via the access link, the indication corresponding to the determination of the sidelink transmission power based on the adjustment value. The UE may perform sidelink open-loop link power control based on the adjustment value. For example, the UE 115 may execute the sidelink open-loop power control logic 1104 stored in the memory 282 under the control of the controller / processor 240 to perform sidelink open-loop power control based on the adjustment value. For illustration, the UE 115 (e.g., the sidelink open-loop power control logic 1104) may determine a first candidate value based on a target received power, a downlink (DL) path loss, and an adjustment value, and determine a second candidate value based on the target received power and the downlink (DL) path loss.

[0126] In some aspects, the indication indicates that the UE uses the first candidate value for a period of time. The UE 115 may use the first candidate value for the period of time based on the timer 1106. For example, the UE 115 may execute the timer 1106 stored in the memory 282 under the control of the controller / processor 240 to use the first candidate value for the period of time.

[0127] At block 1002, a base station transmits data with a UE via an access link while the UE communicates with the electronic device via a sidelink channel based on a sidelink transmission power. For example, a UE 115 may communicate with an electronic device such as an electronic device (e.g., 415) using a sidelink via wireless radios 1100a-r and antennas 252a-r.

[0128] In some aspects, the base station receives a request from the UE to provide an adjustment value. Additionally or alternatively, the indication (e.g., 422) identifies a first access link of a plurality of access links to which the adjustment value is to be applied, each of the plurality of access links being used for communication between the UE and the base station. In some implementations, after sending the indication, the base station may send another indication to the UE to instruct the UE not to use the adjustment value to determine the sidelink transmission power. In some implementations, the other indication may instruct the UE to use a second candidate value, such as a second candidate value based on the target received power and the downlink (DL) path loss, which is not determined based on the adjustment value.

[0129] It should be noted that reference Figures 9 and 10 One or more blocks (or operations) described in Figures 9 and 10 A combination of one or more blocks (or operations) with another in. For example, Fig. 9 One or more blocks in the Fig.10 Additionally or alternatively, the above reference Figures 1 to 6 One or more of the operations described may be combined with reference to Fig. 9 , Fig.10 ,or Fig. 9 and Fig.10 A combination describes a combination of one or more operations.

[0130] Those skilled in the art will appreciate that any of a variety of different technologies and techniques may be used to represent information and signals. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced in the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0131] The functional blocks and modules described herein (eg, Figure 2 and Figure 4 The functional blocks and modules in the present invention may include processors, electronic devices, hardware devices, electronic components, logical circuits, memories, software codes, firmware codes, etc., or any combination thereof.

[0132] Figures 7 to 10 The functional blocks and modules in may include processors, electronic devices, hardware devices, electronic components, logical circuits, memories, software codes, firmware codes, etc., or any combination thereof.

[0133] Although the side link between UE 115 and an electronic device (eg, another UE) has been described with reference to Figures 4 to 12 , but it should be noted that in other cases, the side link may be in an integrated access and backhaul (IAB) node (e.g., a first IAB and a second IAB node). For example, the first IAB node may be configured to be coupled to the base station 105 via one or more access links. Therefore, referring to Figures 1 to 12 The operations and / or components described with respect to the UE 115 in the example embodiment should be understood to be performed by and / or incorporated into the IAB node.

[0134] In some aspects, the technology for implementing sidelink communication may include additional aspects, such as any single aspect or any combination of aspects described below or in combination with one or more other processes or devices described elsewhere herein. In some aspects, implementing sidelink communication may include determining an adjustment value based on an access link for communication between a UE and a base station and based on a sidelink for communication between a UE and an electronic device; determining a sidelink transmission power based on the adjustment value; and sending data to an electronic device via a sidelink based on the sidelink transmission power. In some implementations, the device includes a wireless device such as a UE. In some implementations, the device may include at least one processor and a memory coupled to the processor. The processor may be configured to perform operations described herein with respect to a wireless device. In some other implementations, the device may include a non-transitory computer-readable medium having a program code recorded thereon, and the program code may be executed by a computer to cause the computer to perform operations described herein with reference to a wireless device. In some implementations, the device may include one or more components configured to perform operations described herein.

[0135] In the first aspect, the adjustment value is further determined based on the relationship between the access link and the side link.

[0136] In a second aspect, alone or in combination with the first aspect, the relationship comprises a spatial relationship between the access link and the side link.

[0137] In a third aspect, alone or in combination with one or more of the first to second aspects, the access link corresponds to a UE access link beam with a peak gain, and the side link corresponds to a side link beam with a peak gain.

[0138] In a fourth aspect, either alone or in combination with the third aspect, the apparatus determines a gain of a side link beam in a peak gain direction of a UE access link beam.

[0139] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the apparatus performs sidelink open-loop sidelink power control based on the adjustment value.

[0140] In a sixth aspect, alone or in combination with one or more of the first to fourth aspects, the apparatus determines a first candidate value based on a target received power, a downlink (DL) path loss, and an adjustment value.

[0141] In a seventh aspect, alone or in combination with the sixth aspect, the apparatus determines a second candidate value based on a target received power and a side link path loss.

[0142] In an eighth aspect, alone or in combination with one or more of the sixth to seventh aspects, the apparatus selects a minimum value of a first candidate value and a second candidate value as the side link transmission power.

[0143] In a ninth aspect, alone or in combination with the eighth aspect, the apparatus determines a DL path loss, and wherein the DL path loss comprises a DL beamformed path loss.

[0144] In a tenth aspect, alone or in combination with one or more of the eighth to ninth aspects, the apparatus determines a sidelink path loss, wherein the sidelink path loss comprises a sidelink beamforming path loss.

[0145] In an eleventh aspect, alone or in combination with the eighth aspect, the apparatus determines a third candidate value based on a target received power and a downlink (DL) path loss.

[0146] In a twelfth aspect, alone or in combination with the eleventh aspect, if the third candidate value is less than the selected minimum value, the apparatus adjusts the sidelink transmission power to the third candidate value.

[0147] In a thirteenth aspect, either alone or in combination with one or more of the first to twelfth aspects, the apparatus uses each of a plurality of concurrent access links for communication between the apparatus and a base station.

[0148] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the electronic device includes a UE.

[0149] In a fifteenth aspect, either alone or in combination with one or more of the first to fourteenth aspects, the apparatus receives an indication of an adjustment value from a base station.

[0150] In some aspects, a device configured for wireless communication, such as a UE, is configured to select a first access link among multiple access links, each of which can be used for communication between the UE and a base station; determine a side link transmission power based on the first access link; and send data to an electronic device via a side link based on the side link transmission power. In some implementations, the device includes a wireless device such as a base station. In some implementations, the device may include at least one processor and a memory coupled to the processor. The processor may be configured to perform operations described herein with respect to the wireless device. In some other implementations, the device may include a non-transitory computer-readable medium having a program code recorded thereon, and the program code may be run by a computer to cause the computer to perform operations described herein with reference to the wireless device. In some implementations, the device may include one or more components configured to perform the operations described herein.

[0151] In the sixteenth aspect, the first access link is selected based on the relationship between the first access link and the side link.

[0152] In the seventeenth aspect, alone or in combination with one or more of aspects sixteen to seventeen, the relationship is based on a radiation pattern of a UE access link beam corresponding to the first access link, a radiation pattern of a side link beam corresponding to the side link, or both.

[0153] In the eighteenth aspect, alone or in combination with the seventeenth aspect, the relationship is also based on the direction of the peak gain of the UE access link beam, the direction of the peak gain of the side link beam, or both.

[0154] In a nineteenth aspect, alone or in combination with one or more of the sixteenth to eighteenth aspects, the apparatus is further configured to determine which of the plurality of access links is closest to the side link.

[0155] In the twentieth aspect, alone or in combination with the nineteenth aspect, the apparatus is further configured to determine which access link among the plurality of access links is closest to the side link based on a spatial relationship between each access link and the side link.

[0156] In a twenty-first aspect, alone or in combination with the twentieth aspect, the apparatus is further configured to determine a first value corresponding to a first angular distance between the first access link and the side link.

[0157] In the twenty-second aspect, alone or in combination with the twenty-first aspect, the apparatus is further configured to have a second value corresponding to a second angular distance between a second access link among the plurality of access links and the side link.

[0158] In a twenty-third aspect, alone or in combination with the twenty-second aspect, the apparatus is further configured to determine whether the first value is less than the second value.

[0159] In aspect twenty-four, alone or in combination with aspect twenty-three, the first value is determined based on a first direction of a peak gain of a first UE access link beam corresponding to the first access link and based on a second direction of a peak gain of a side link beam corresponding to the side link.

[0160] In aspect twenty-fifth, alone or in combination with aspect twenty-fourth, the second value is determined based on a third direction of a peak gain of a second UE access link beam corresponding to a second access link and based on a second direction of a peak gain of a side link beam.

[0161] In a twenty-sixth aspect, alone or in combination with one or more of aspects sixteen to twenty-fifth, the apparatus is further configured to determine the sidelink transmission power by performing sidelink open-loop power control.

[0162] In a twenty-seventh aspect, alone or in combination with one or more of aspects sixteen to twenty-six, in order to determine a side link transmission power, the apparatus is configured to determine a first candidate value based on a target received power and a downlink (DL) path loss.

[0163] In a twenty-eighth aspect, either alone or in combination with the twenty-seventh aspect, in order to determine the side link transmission power, the apparatus is configured to determine a second candidate value based on the target received power and the side link path loss.

[0164] In the twenty-ninth aspect, alone or in combination with the twenty-eighth aspect, in order to determine the side link transmission power, the device is configured to select a minimum value between the first candidate value and the second candidate value as the side link transmission power.

[0165] In a thirtieth aspect, alone or in combination with the twenty-ninth aspect, the apparatus is further configured to determine a DL path loss.

[0166] In a thirty-first aspect, alone or in combination with the thirtieth aspect, the DL path loss comprises a DL beamforming path loss.

[0167] In a thirty-second aspect, alone or in combination with one or more of aspects 30 to 31, the apparatus is further configured to determine a side link path loss.

[0168] In a thirty-third aspect, alone or in combination with the thirty-second aspect, the sidelink path loss comprises a sidelink beamforming path loss.

[0169] In a thirty-fourth aspect, alone or in combination with one or more of aspects sixteen to thirty-fourth, the apparatus is further configured to use each of a plurality of access links for communication between the UE and the base station.

[0170] In a thirty-fifth aspect, alone or in combination with the thirty-third aspect, the first access link is selected in response to an indication.

[0171] In a thirty-sixth aspect, alone or in combination with one or more of aspects sixteen to thirty-fifth, the apparatus is further configured to receive an indication of an adjustment value from a base station.

[0172] In a thirty-seventh aspect, alone or in combination with the thirty-sixth aspect, the side link transmission power is determined based on the adjustment value.

[0173] In aspect thirty-eight, alone or in combination with one or more aspects from sixteen to thirty-seven, the apparatus is further configured to determine an adjustment value based on an access link for communication between the UE and a base station and based on a side link for communication between the UE and an electronic device.

[0174] In the thirty-ninth aspect, alone or in combination with the thirty-eighth aspect, the UE is further configured to determine the sidelink transmission power based on the adjustment value.

[0175] In the 40th aspect, alone or in combination with the 38th aspect, the UE is further configured to determine a second transmission power based on the adjustment value; and send data to the electronic device via the side link based on the second side link transmission power.

[0176] In the forty-first aspect, alone or in combination with one or more of the thirty-eighth to fortieth aspects, the adjustment value is further determined based on the relationship between the access link and the side link.

[0177] In a 42nd aspect, either alone or in combination with the 41st aspect, the relationship comprises a spatial relationship between the access link and the side link.

[0178] In a forty-third aspect, either alone or in combination with one or more of aspects thirty-eight to forty-two, the access link corresponds to a UE access link beam having a peak gain, and the side link corresponds to a side link beam having a peak gain.

[0179] In a 44th aspect, either alone or in combination with the 43rd aspect, the apparatus is further configured to determine a gain of a side link beam in a direction of a peak gain of a UE access link beam.

[0180] In a forty-fifth aspect, either alone or in combination with the forty-fourth aspect, the adjustment value corresponds to a difference between a peak gain of a UE access link beam and a gain of a side link beam in the direction of the peak gain of the UE access link beam.

[0181] In a forty-sixth aspect, alone or in combination with one or more of aspects sixteen to forty-fifth, the apparatus is further configured to perform sidelink open-loop sidelink power control based on the adjustment value.

[0182] In aspect 47, alone or in combination with one or more of aspects 16 to 46, the apparatus is further configured to determine a first candidate value based on a target received power, a downlink (DL) path loss, and an adjustment value; determine a second candidate value based on the target received power and the side link path loss; and select a minimum value between the first candidate value and the second candidate value as the side link transmission power.

[0183] In the 48th aspect, alone or in combination with the 47th aspect, the apparatus is further configured to determine a DL path loss, the DL path loss comprising a DL beamforming path loss; and determine a side link path loss, the side link path loss comprising a side link beamforming path loss.

[0184] In aspect 49, alone or in combination with aspect 47, the apparatus is further configured to determine a third candidate value based on the target received power and the downlink (DL) path loss; and if the third candidate value is less than the selected minimum value, the side link transmission power is adjusted to the third candidate value.

[0185] In the fiftieth aspect, alone or in combination with one or more of aspects 38 to 49, the apparatus is further configured to use each of a plurality of concurrent access links for communication between the UE and the base station.

[0186] In the fifty-first aspect, alone or in combination with the fiftieth aspect, the electronic device includes a UE different from the apparatus.

[0187] In a fifty-second aspect, either alone or in combination with one or more of aspects thirty-eight to fifty-one, the apparatus is further configured to receive an indication of an adjustment value from a base station.

[0188] In some aspects, a device configured for wireless communication, such as a base station, is configured to select a first access link among multiple access links, each of which can be used for communication between the base station and a user equipment (UE). The device is also configured to send an indication of the first access link to the UE, the indication corresponding to the determination of the side link transmission power based on the first access link. The device is also configured to transmit data to the UE via one of the multiple access links while the UE communicates with the electronic device via a side link channel based on the side link transmission power. In some implementations, the device includes a wireless device such as a base station. In some implementations, the device may include at least one processor and a memory coupled to the processor. The processor may be configured to perform the operations described herein with respect to the wireless device. In some other implementations, the device may include a non-transitory computer-readable medium having a program code recorded thereon, and the program code may be executed by a computer to cause the computer to perform the operations described herein with reference to the wireless device. In some implementations, the device may include one or more components configured to perform the operations described herein.

[0189] In a fifty-third aspect, the first access link is selected based on interference corresponding to the first access link.

[0190] In aspect fifty-four, alone or in combination with one or more of aspects fifty-three to fifty-three, the apparatus is further configured to determine a first interference value corresponding to a first access link; and determine a second interference value corresponding to a second access link among the plurality of access links.

[0191] In a fifty-fifth aspect, alone or in combination with the fifty-fourth aspect, the apparatus is further configured to perform a comparison between the first interference value and the second interference value.

[0192] In a fifty-sixth aspect, either alone or in combination with the fifty-fifth aspect, the first access link is selected based on the first interference value being greater than the second interference value.

[0193] In a fifty-seventh aspect, either alone or in combination with one or more of aspects fifty-three to fifty-six, the first access link is selected based on the first access link being designated as a primary access link.

[0194] In a fifty-eighth aspect, alone or in combination with one or more of aspects one to fifty-seven, the indication further comprises an adjustment value to be applied by the UE to determine the sidelink transmission power.

[0195] In some aspects, a device configured for wireless communication, such as a base station, is configured to select an adjustment value for a user equipment (UE) communicating with the base station via an access link; an indication corresponding to the adjustment value is sent to the UE via the access link, the indication corresponding to the determination of the side link transmission power based on the adjustment value. The device is also configured to transmit data with the UE via the access link while the UE communicates with the electronic device via a side link channel based on the side link transmission power. In some implementations, the device includes a wireless device such as a base station. In some implementations, the device may include at least one processor and a memory coupled to the processor. The processor may be configured to perform operations described herein with respect to the wireless device. In some other implementations, the device may include a non-transitory computer-readable medium having a program code recorded thereon, and the program code may be executed by a computer to cause the computer to perform the operations described herein with reference to the wireless device. In some implementations, the device may include one or more components configured to perform the operations described herein.

[0196] In the fifty-ninth aspect, the adjustment value is a predetermined value.

[0197] In the sixtieth aspect, the adjustment value is determined based on the amount of interference of the side link to the access link.

[0198] In the sixty-first aspect, alone or in combination with one or more of the fifty-ninth to sixty aspects, the UE is configured to perform sidelink open-loop power control based on the adjustment value.

[0199] In a sixty-second aspect, alone or in combination with one or more of aspects fifty-ninth to sixty-first, the UE is configured to determine a first candidate value based on a target received power, a downlink (DL) path loss, and an adjustment value.

[0200] In a sixty-third aspect, alone or in combination with the sixty-second aspect, the UE is configured to determine a second candidate value based on a target received power and a downlink (DL) path loss.

[0201] In a sixty-fourth aspect, alone or in combination with the sixty-third aspect, the indication instructs the UE to use the first candidate value for a period of time.

[0202] In the sixty-fifth aspect, alone or in combination with the sixty-third aspect, the apparatus is further configured to send another indication to the UE to instruct the UE to use the second candidate value.

[0203] In a sixty-sixth aspect, alone or in combination with one or more of aspects fifty-nine to sixty-fifth, the apparatus is further configured to receive a request to provide an adjustment value from a UE.

[0204] In aspect sixty-seven, alone or in combination with one or more aspects of aspects fifty-nine to sixty-six, the apparatus is further configured to send another indication to the UE after sending the indication to instruct the UE not to use the adjustment value to determine the sidelink transmission power.

[0205] In aspect sixty-eight, alone or in combination with one or more of aspects fifty-nine to sixty-seven, the indication identifies a first access link among multiple access links to which an adjustment value is to be applied, each of the multiple access links being used for communication between a UE and a base station.

[0206] Those skilled in the art will also appreciate that the various illustrative logic blocks, modules, circuits and algorithm steps described in conjunction with the disclosure herein can be implemented as electronic hardware, computer software or a combination of the two. In order to clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits and steps have been described above generally according to their functions. Whether this function is implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system. The technician can implement the described functions in different ways for each specific application, but such implementation decisions should not be interpreted as causing deviations from the scope of the present disclosure. The technician will also easily recognize that the order or combination of the components, methods or interactions described herein are merely examples, and the components, methods or interactions of various aspects of the present disclosure can be combined or performed in ways different from those described and described herein.

[0207] The various illustrative logical blocks, modules, and circuits described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described 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, such as 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.

[0208] The steps of the method or algorithm described in conjunction with the disclosure herein can be directly embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software module can reside in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. In an alternative, the storage medium can be integrated into the processor. The processor and the storage medium can reside in an ASIC. The ASIC can reside in a user terminal. In an alternative, the processor and the storage medium can reside in a user terminal as discrete components.

[0209] In one or more exemplary designs, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, these functions may be stored or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, including any media that facilitates the transfer of computer programs from one place to another. Computer-readable storage media may be any available media that can be accessed by a general-purpose or special-purpose computer. As an example and not limitation, such a computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other medium that can be used to carry or store the required program code device in the form of an instruction or data structure, and can be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. In addition, the connection may be appropriately referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL), the coaxial cable, fiber optic cable, twisted pair, or DSL are all included in the definition of the medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0210] As used herein, including in the claims, the term "and / or," when used in a list of two or more items, means that any one of the listed items may be used alone, or any combination of two or more of the listed items may be used. For example, if a combination is described as containing ingredients A, B, and / or C, the combination may contain A alone; B alone; C alone; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C. Furthermore, as used herein, including in the claims, "or" used in a list of items beginning with "at least one" means a disjunctive 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) or any combination of any of these.

[0211] The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Therefore, the disclosure is not intended to be limited to the examples and designs described herein, but to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus configured for wireless communication, the apparatus comprising: at least one processor; as well as a memory coupled to the at least one processor, wherein the at least one processor is configured to: Selecting, by a user equipment UE, a first access link from a plurality of access links, each of the plurality of access links being usable for communication between the UE and a base station; Determining, by the UE, a side link transmission power based on the first access link; as well as The UE sends data to the electronic device via a side link based on the side link transmission power, The first access link is selected based on the relationship between the first access link and the side link.

2. An apparatus according to claim 1, wherein the relationship is based on a radiation pattern of a UE access link beam corresponding to the first access link, a radiation pattern of a side link beam corresponding to the side link, or both.

3. An apparatus according to claim 2, wherein the relationship is also based on the direction of the peak gain of the UE access link beam, the direction of the peak gain of the side link beam, or both.

4. The apparatus of claim 1, further comprising determining which of the plurality of access links is closest to the side link.

5. The apparatus of claim 1, wherein determining which access link among the plurality of access links is closest to the side link is determined based on a spatial relationship between each access link and the side link.

6. A method of wireless communication, comprising: Selecting, by a user equipment UE, a first access link from a plurality of access links, each of the plurality of access links being usable for communication between the UE and a base station; Determining, by the UE, a side link transmission power based on the first access link; as well as The UE sends data to the electronic device via a side link based on the side link transmission power, The first access link is selected based on the relationship between the first access link and the side link.

7. The method according to claim 6, further comprising: Based on a spatial relationship between each access link and the side link, it is determined which access link among the plurality of access links is closest to the side link.

8. The method according to claim 7, further comprising: determining a first value corresponding to a first angular distance between the first access link and the side link; determining a second value corresponding to a second angular distance between a second access link of the plurality of access links and the side link; and It is determined whether the first value is less than the second value.

9. The method according to claim 8, wherein: The first value is determined based on a first direction of a peak gain of a first UE access link beam corresponding to the first access link and based on a second direction of a peak gain of a side link beam corresponding to the side link; and The second value is determined based on a third direction of a peak gain of a second UE access link beam corresponding to the second access link and based on a second direction of a peak gain of the side link beam.

10. The method of claim 6, wherein determining the sidelink transmission power comprises performing sidelink open loop power control.

11. The method of claim 6, wherein determining the sidelink transmission power comprises: Determine a first candidate value based on the target received power and the downlink DL path loss; determining a second candidate value based on the target received power and the side link path loss; as well as A minimum value between the first candidate value and the second candidate value is selected as the side link transmission power.

12. The method according to claim 11, further comprising: determining the DL path loss, the DL path loss comprising a DL beamforming path loss; as well as The sidelink path loss is determined, the sidelink path loss comprising a sidelink beamforming path loss.

13. The method according to claim 6, further comprising: Using each of the multiple access links for communication between the UE and the base station; and The electronic device includes another UE.

14. The method according to claim 6, further comprising: receiving an indication of the first access link from the base station; and The first access link is selected in response to the indication.

15. The method according to claim 6, further comprising: receiving an indication of an adjustment value from the base station; and The sidelink transmission power is determined based on the adjustment value.

16. A non-transitory computer readable medium having program code recorded thereon, the program code, when executed by a processor, causing the processor to perform the method according to any one of claims 6 to 15.

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