Apparatus and method of communication

Abstract

The embodiment of the invention relates to equipment and a method for communication. A terminal device determines a set of beams for STxMP. Based on the information of the beam set, the terminal device determines power limit information for the STxMP, and performs the STxMP based on the power limit information. In this manner, a suitable UL PC for STxMP may be implemented.

Description

Technical Field

[0001] The exemplary embodiments of this disclosure relate generally to the telecommunications field, and more specifically to communication methods, apparatus and computer-readable media for uplink (UL) power control (PC) of simultaneous transmission across multi-panel (STxMP). Background Technology

[0002] Currently, two power limiting assumptions for STxMP have been discussed: the power limit per panel of STxMP, and the total power limit per UE across all user equipment (UE) panels used for STxMP. However, how to implement UL PC for STxMP in these scenarios remains unclear. Summary of the Invention

[0003] Generally speaking, the exemplary embodiments of this disclosure provide methods, apparatus, and computer storage media for communication with a UL PC for STxMP.

[0004] In a first aspect, a terminal device is provided. The terminal device includes a processor configured to cause the terminal device to: determine a beam set for simultaneous transmission across panels; determine power limiting information for simultaneous transmission across panels based on information of the beam set; and perform simultaneous transmission across panels based on the power limiting information.

[0005] In a second aspect, a method for communication is provided. The method includes: determining at a terminal device a beam set for simultaneous transmission across panels; determining power limiting information for simultaneous transmission across panels based on information from the beam set; and performing simultaneous transmission across panels based on the power limiting information.

[0006] In a third aspect, a computer-readable medium is provided on which instructions are stored. When executed on at least one processor, these instructions cause the at least one processor to perform the method according to the second aspect of this disclosure.

[0007] It should be understood that the summary portion is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0008] The above and other objects, features and advantages of this disclosure will become more apparent from a more detailed description of some embodiments thereof in the accompanying drawings, wherein:

[0009] Figure 1A Example communication networks in which embodiments of this disclosure can be implemented are illustrated;

[0010] Figure 1B Another example communication network in which embodiments of this disclosure can be implemented is illustrated;

[0011] Figure 1C Another example communication network in which the embodiments of this disclosure can be implemented is illustrated;

[0012] Figure 2 A schematic diagram is illustrated, illustrating an example of a beam set of a panel in which embodiments of the present disclosure may be implemented;

[0013] Figure 3 A schematic diagram is illustrated, which illustrates a communication process according to some example embodiments of the present disclosure;

[0014] Figure 4 A schematic diagram is illustrated, which illustrates an example power headroom report (PHR) medium access control (MAC) control element (CE) according to some example embodiments of the present disclosure.

[0015] Figure 5 Flowcharts illustrating example methods performed by a terminal device according to some embodiments of the present disclosure are shown; and

[0016] Figure 6 This is a simplified block diagram of an apparatus suitable for implementing embodiments of this disclosure.

[0017] Throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. Detailed Implementation

[0018] The principles of this disclosure will now be described with reference to some embodiments. It should be understood that these embodiments are described for illustrative purposes only and are intended to assist those skilled in the art in understanding and implementing this disclosure, and are not intended to limit the scope of this disclosure. The disclosure described herein can be implemented in various ways other than those described below.

[0019] In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains.

[0020] As used herein, the term "terminal device" refers to any device with wireless or wired communication capabilities. Examples of terminal devices include, but are not limited to: user equipment (UE); personal computers; desktop computers; mobile phones; cellular phones; smartphones; personal digital assistants (PDAs); portable computers; tablets; wearable devices; Internet of Things (IoT) devices; Ultra-reliable and Low-Latency Communication (URLLC) devices; Internet of Everything (IoE) devices; machine-type communication (MTC) devices; devices on vehicles for V2X communication, where X refers to pedestrians, vehicles, or infrastructure / networks; devices for Integrated Access and Backhaul (IAB); devices for Small Data Transmission (SDT); mobility devices; devices for Multicast and Broadcast Service (MBS); devices for location services; devices for dynamic / flexible duplexing in commercial networks; RedCap (red-cap) devices; and non-terrestrial networks (NTNs). In the context of a non-terrestrial network, spacecraft or aircraft vehicles are included. These non-terrestrial networks include satellites and high-altitude platforms (HAPs) encompassing unmanned aircraft systems (UAS); extended reality (XR) devices that include different types of reality (such as augmented reality (AR), mixed reality (MR), and virtual reality (VR)); unmanned aerial vehicles (UAVs), often referred to as drones (aircraft without any human pilots); equipment on high-speed trains (HSTs); or image capture devices such as digital cameras and sensors; gaming devices; music storage and playback devices; or internet devices that enable wireless or wired internet access and browsing.The "terminal device" may also have "multicast / broadcast" capabilities to support public safety and mission-critical applications, V2X applications, transparent IPv4 / IPv6 multicast delivery, IPTV, smart TV, radio services, wireless software delivery, group communications, and IoT applications. The "terminal device" may also incorporate one or more Subscriber Identity Modules (SIMs), a latter case referred to as multi-SIM. The term "terminal device" is used interchangeably with UE, mobile station, subscriber station, mobile terminal, user terminal, or wireless device.

[0021] The term "network device" refers to a device that provides or hosts a cell or coverage area for terminal devices to communicate. Examples of network devices include, but are not limited to, NodeBs (or NBs), evolved NodeBs (eNodeBs or eNBs), next-generation NodeBs (gNBs), transmission reception points (TRPs), remote radio units (RRUs), radioheads (RHs), remote radio heads (RRHs), IAB nodes, low-power nodes (such as femtonodes and piconodes), reconfigurable intelligent surfaces (RISs), and network-controlled repeaters.

[0022] Terminal devices or network devices may have artificial intelligence (AI) or machine learning capabilities. Terminal devices or network devices typically include models that have been trained on specific functions based on a large amount of collected data and can be used to predict some information.

[0023] Terminal or network devices can operate within several frequency ranges, such as FR1 (410MHz to 7125MHz), FR2 (24.25GHz to 71GHz), bands above 100GHz, and terahertz (THz). They can also operate on licensed / unlicensed / shared spectrum. In Multi-Radio Dual Connectivity (MR-DC) applications, terminal devices can be connected to more than one network device. Terminal or network devices can operate in full-duplex, flexible-duplex, and cross-division duplex modes.

[0024] Network devices may feature network energy saving and self-organizing network (SON) / minimization of drive test (MDT) capabilities. Terminals may feature power saving capabilities.

[0025] The embodiments disclosed herein can be implemented in test equipment (e.g., signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal equipment, test network equipment, channel simulator).

[0026] The embodiments of this disclosure can be implemented according to any generation of communication protocols currently known or to be developed in the future. Examples of communication protocols include, but are not limited to, first-generation (1G), second-generation (2G), 2.5G, 2.75G, third-generation (3G), fourth-generation (4G), 4.5G, fifth-generation (5G), 5.5G, 5G-Advanced Networks, or sixth-generation (6G) networks.

[0027] In one embodiment, the terminal device may be connected to a first network device and a second network device. One of the first and second network devices may be a master node, and the other may be a slave node. The first and second network devices may use different Radio Access Technologies (RATs). In one embodiment, the first network device may be a first RAT device, and the second network device may be a second RAT device. In one embodiment, the first RAT device is an eNB, and the second RAT device is a gNB. Information related to different RATs may be sent to the terminal device from at least one of the first or second network devices. In one embodiment, first information may be sent from the first network device to the terminal device, and second information may be sent from the second network device directly or via the first network device to the terminal device. In one embodiment, configuration-related information configured by the second network device for the terminal device may be sent from the second network device via the first network device. Reconfiguration-related information configured by the second network device for the terminal device may be sent from the second network device directly or via the first network device to the terminal device.

[0028] As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The term “comprising” and its variations should be understood as open terms meaning “including, but not limited to.” The term “based on” should be understood as “at least partially based on.” The terms “one implementation” and “implementation” should be understood as “at least one implementation.” The term “another implementation” should be understood as “at least one other implementation.” The terms “first,” “second,” etc., may refer to different or the same objects. Other explicit and implicit definitions are given below.

[0029] In some examples, values, programs, or devices are described as “best,” “lowest,” “highest,” “smallest,” “maximum,” etc. It should be understood that such descriptions are intended to indicate that a choice can be made among many alternative functionalities used, and that such a choice is not necessarily better, smaller, higher, or otherwise preferred than other choices.

[0030] As is well known, the UE can configure its maximum output power. For carrier f of serving cell c, the configured maximum output power of the UE is... It can be defined as the power available at a reference point for a given transmitter branch, which corresponds to the reference point for the reference signal receiving power (RSRP) measurement of higher-layer filtering. For carrier f of serving cell c, the configured maximum output power of the UE is... It should be set so that the corresponding measured peak EIRP Within the boundaries of the following formula (1): P Powerclass + DP IBE – MAX(MAX(MPR f,c A- MPR f,c ,) + ΔMB P,n P-MPR f,c ) – MAX{T(MAX(MPR f,c A- MPR f,c ,)), T(P-MPR f,c )} ≤ P UMAX,f,c ≤ EIRP max (1) At the same time, the corresponding measured total radiated power P TMAX,f,c Defined by formula (2): P TMAX,f,c ≤ TRP max (2) Among them, P PowerclassEIRP represents the minimum peak effective isotropic radiated power of the UE. max Indicates the applicable maximum EIRP, MPR f,c This indicates that the maximum output power of carrier f in serving cell c has decreased, A-MPR f,c This indicates that the additional maximum output power of carrier f in serving cell c is reduced, ΔMB P,n Indicates peak EIRP tolerance, P-MPR f,c This indicates that the power management of carrier f in serving cell c reduces the maximum power of the UE, T( P) indicates that it applies to The tolerance T of the P-value ( P), and TRP max Indicates the maximum TRP for the UE's power level. This is when the UE declares support... mpr-PowerBoost-FR2- r16 UL transmission is QPSK modulated, MPR f,c = 0, and when NS_200 is applied and the network is configured for the UE to mpr-PowerBoost- FR2-r16 During runtime, DP IBE 1.0dB; otherwise DP IBE The value is 0.0 dB. This requirement is verified in the beam peak direction. mpr- PowerBoost-FR2-r16 Indicates whether the UE is allowed to increase uplink transmit power by suspending in-band emission (IBE) requests.

[0031] One consensus is that for STxMP, power limits per panel and total power limits per UE should be applied to the same UE. The beam variation between different panels transmitting simultaneously may be greater or less, so even if the EIRP requirements are the same for each panel, the maximum output power of the UE per panel may be different.

[0032] In view of this, the embodiments of this disclosure provide a solution for communication of a UL PC to overcome the above-mentioned or other potential problems. In this solution, a terminal device determines a beam set for STxMP. Based on the information of the beam set, the terminal device determines power limiting information for the STxMP and performs the STxMP based on the power limiting information. In this way, a suitable UL PC can be achieved for STxMP. Thus, while meeting the maximum EIRP requirements, the highest possible transmission power can be guaranteed, thereby ensuring the quality of UL transmission.

[0033] The principles and specific implementations of this disclosure will now be described in detail with reference to the accompanying drawings.

[0034] In this disclosure, some terms may refer to the same or similar physical meanings and are used interchangeably. Some exemplary examples are given below. • The terms “port for uplink transmission”, “port for physical uplink shared channel (PUSCH) transmission”, “port with non-zero PUSCH transmission power” and “port with non-zero uplink transmission power” are used interchangeably. • The terms “panel for uplink transmission”, “panel for PUSCH transmission”, “panel with non-zero PUSCH transmission power” and “panel with non-zero uplink transmission power” are used interchangeably. • The terms “transmission capability information”, “UE capability information”, “capability-related information”, “capability value set”, “panel information” and “panel-related information” are used interchangeably; • The terms “precoder,” “precoding,” “precoding matrix,” “beam,” “spatial relation information,” “spatial relation data,” “precoding information,” “precoding information and layer number,” “precoding matrix indicator (PMI),” “precoding matrix indicator,” “transmit precoding matrix indicator,” “precoding matrix indicator,” “transmission configuration indicator (TCI) status,” “transmission configuration indicator,” “quasi co-location (QCL),” “QCL ​​parameters,” “QCL ​​assumptions,” “QCL ​​relation,” and “spatial relation” are used interchangeably. • The terms “single TRP”, “single TCI state”, “single TCI”, “S-TCI”, “single control resource set (CORESET)”, “single CORESET pool”, “S-TRP” and “S-TCI state” are used interchangeably. • The terms “multiple TRPs”, “multiple TCI states”, “multiple CORESETs” and “multiple control resource sets”, “multiple TRPs”, “multiple TCI states”, “multiple TCIs”, “multiple CORESETs” and “multiple control resource sets”, “multiple transmission reception points (MTRPs)” and “M-TCI” and “M-TPRs” are used interchangeably. • The terms “resources,” “resources in a resource pool,” and “resource set” are used interchangeably; The terms “group,” “subset,” and “set” are used interchangeably. • A panel discussed in this article refers to one or more antenna elements deployed in a specific area of ​​a terminal device. The panel discussed in this article may refer to a downlink panel, an uplink panel, a panel type, a panel state, a capability set, a reference signal (RS) resource, an RS resource set, an antenna port, an antenna port group, a beam, or a beam group. For this purpose, the terms (and their equivalents) “panel,” “panel type,” “antenna port set,” “antenna element,” and “antenna array” are used interchangeably. The panel information discussed in this article can refer to UE panel index / identification (ID), downlink panel ID, uplink panel ID, panel type indicator, panel status indicator, capability set index, RS resource ID, RS resource set ID, antenna port ID, antenna port group ID, beam ID, and beam group ID. The terms "per panel" are used interchangeably with "per capability value index," "per capability value set index," "per RF chain," "per transmit (Tx) RF chain," "per branch," and "per Tx branch." As used herein, the term "TRP" refers to an antenna array (having one or more antenna elements) available to network devices located in a specific geographic area. Although some embodiments of this disclosure are described with reference to multi-TRP scenarios (or single-TRP scenarios), these embodiments are for illustrative purposes only and are intended to assist those skilled in the art in understanding and implementing this disclosure, and are not intended to limit the scope of this disclosure in any way. It should be understood that this disclosure described herein can be implemented in various ways other than those described below. As used herein, the term "sounding reference signal (SRS) transmission" refers to the transmission of an SRS resource identified by the SRS signal resource indicator (SRI) in a downlink control information (DCI) message used for uplink granting. Therefore, the term "recent SRS transmission" refers to the most recent transmission of an SRS resource identified by the SRI in a DCI message used for uplink granting. As used herein, the term “network” / “network device” refers to one or more network devices. Therefore, the terms “network,” “network device,” and “one or more network devices” are used interchangeably. • The terms “panel with lower capability”, “panel with higher capability”, “panel corresponding to the lower / higher capability value set index”, “recently used panel”, “old panel used in initial access / least PRACH”, and “panel used in initial access / least PRACH” can be used interchangeably. In other words, it can be any predefined rule that is known at both the network (NW) and UE sides or that is signaled to each other by the NW / UE through configuration / capability reports / requests. • The “Bandwidth Part (BWP) ID / index” and “BWP / Component Carrier (CC) ID / index”, “CC Identifier / index”, “Cell Identifier / index”, “Physical Cell Identifier / index” and “Serving Cell Identifier / index” can be used interchangeably. • Uplink (UL) beam, spatial relationship, spatial Tx, spatial domain filter, RS, resource, and TCI status can refer to the same thing. UL beams (or UL beam IDs) and downlink (DL) beams (or DL ​​beam IDs) may or may not have a beam correspondence. UL beams (or UL beam IDs) can be determined based on measurements of DL RS. UL beams or UL beam IDs can be reflected as RSID, resource ID, beam ID, etc. UL beam pairs can refer to a set of UL beams (more than 2), beams generated by different panels, or beams directed towards different TRPs. The terms "beam" are also used interchangeably with "QCL parameter set," "QCL type," "QCL typeD," "spatial receive parameters," "spatial domain parameters," "spatial domain transmit filter," "spatial domain receive filter," "spatial receive parameters," or "spatial relationship information." • Panel or panel ID can be replaced by capability index. The term “panel” can also be used interchangeably with “DL panel,” “UL panel,” “panel type,” “panel status,” “capability set,” “RS resource,” “RS resource set,” “antenna port,” “antenna port group,” “beam,” or “beam group.” The term “panel ID” can also be used interchangeably with “DL panel ID,” “UL panel ID,” “panel type indicator,” “panel status indicator,” “capability set index,” “RS resource ID,” “RS resource set ID,” “antenna port ID,” “antenna port group ID,” “beam ID,” or “beam group ID.” The term “per panel” can also be used interchangeably with “per capability [set] index,” “per [Tx] RF chain,” “per [Tx] branch,” etc. • UL's MTRP TCI status can be either a combined TCI status or a UL TCI status. UL's MTRP TCI status can be one indicated combined TCI status + one indicated combined TCI status. UL's MTRP TCI status can be one pair of indicated DL and ULTCI statuses + one pair of indicated DL and UL TCI statuses. As used herein, a unified TCI status can refer to a pair of DL and UL TCI statuses. For path loss (PL) RS and PL estimation, the path loss of the active UL BWP b on carrier f is based on the PL RS on the active DL BWP of serving cell c, and is calculated by the UE in dB as referenceSignalPower – RSRP of the higher-layer filter in dBm. If the UE is not configured with periodic Channel State Information (CSI)-RS reception, referenceSignalPower is provided by ss-PBCH-BlockPower. If the UE is not configured with periodic CSI-RS reception, referenceSignalPower is provided either by ss-PBCH-BlockPower or by powerControlOffsetSS (which provides the offset of CSI-RS transmit power relative to the SS / PBCH block transmit power). If powerControlOffsetSS is not provided to the UE, the UE assumes an offset of 0 dB. The term "for STxMP" can include both "for STxMP spatial division multiplexing (SDM)" and "for STxMP single-frequency network (SFN)". Other STxMP schemes are not excluded, including STxMP repetition and STxMP frequency division multiplexing (FDM). The term "for STxMP" can include both "for STxMP PUSCH" and "for STxMP physical uplink control channel (PUCCH)". Other channels / signals or combinations of channels / signals are not excluded, including PRACH, SRS, and PUSCH+PUCCH. • The term “for STxMP” can include “for STxMP based on single DCI” and “for STxMP based on multiple DCI” respectively. • The term “for STxMP” can include “for dynamic grant (DG) / configured grant (CG) STxMP” and “for DG / CG + DG / CG STxMP”, respectively.

[0035] Figure 1A An example communication network 100A is illustrated, in which embodiments of the present disclosure can be implemented. Communication network 100A includes network device 110-1 and optional network device 110-2 (collectively or individually referred to as network device 110). Network device 110 can provide services to terminal device 120. For purposes of discussion, network device 110-1 is referred to as first network device 110-1, and network device 110-2 is referred to as second network device 110-2. Furthermore, first network device 110-1 and second network device 110-2 can communicate with each other.

[0036] In communication network 100A, the link from network device 110 (e.g., first network device 110-1 or second network device 110-2) to terminal device 120 is called a downlink, while the link from terminal device 120 to network device 110 (e.g., first network device 110-1 or second network device 110-2) is called an uplink. In the downlink, first network device 110-1 or second network device 110-2 is a Tx device (or transmitter), and terminal device 120 is a receiving (Rx) device (or receiver). In the uplink, terminal device 120 is a transmitting Tx device (or transmitter), and first network device 110-1 or second network device 110-2 is an Rx device (or receiver).

[0037] In some implementations, network device 110 and terminal device 120 may communicate using a direct link / channel.

[0038] In some implementations, terminal device 120 may be deployed with more than one panel. For example... Figure 1A As illustrated, terminal device 120 is equipped with panels 125-1 and 125-2. In the following text, panels 125-1 and 125-2 may be referred to as first panel 125-1 and second panel 125-2, respectively.

[0039] In some embodiments, the first panel 125-1 and the second panel 125-2 correspond to different groups of antenna ports / antenna elements / antenna arrays. As a specific example, the first panel 125-1 corresponds to a first antenna port set, and the second panel 125-2 corresponds to a second antenna port set. In some embodiments, panels 125-1 and 125-2 may each correspond to different sets of capability values. In some embodiments, panels 125-1 and 125-2 may each correspond to different RS resource sets. In some embodiments, the RS resource set may be an SRS resource set. Each resource set may include one or more resources.

[0040] In the communication network 100A, PUSCH STxMP can be supported. Specifically, the terminal device 120 can perform PUSCH simultaneously on both panels 125-1 and 125-2.

[0041] In some implementations, MTRP transmission may also be supported. For example... Figure 1A As shown, terminal device 120 can communicate with two TRPs (i.e., TRP 130-1 and 130-2) (collectively referred to as TRP 130 or individually). For the purposes of discussion, TRP 130-1 is referred to as the first TRP 130-1, and TRP 130-2 is referred to as the second TRP 130-2.

[0042] Furthermore, to support MTRPs and / or multiple panels, network device 110 may be equipped with one or more TRPs. For example, network device 110 may be coupled with multiple TRPs in different geographical locations to achieve better coverage. In one specific example embodiment, the first network device 110-1 is equipped with a first TRP 130-1 and a second TRP 130-2. Alternatively, in another specific example embodiment, the first network device 110-1 and the second network device 110-2 are equipped with a first TRP 130-1 and a second TRP 130-2, respectively.

[0043] In some implementations, the first TRP 130-1 and the second TRP 130-2 are associated with different control resource set pools (CORESET pools). For example, the first TRP 130-1 is associated with a first control resource set pool, while the second TRP 130-2 is associated with a second control resource set pool.

[0044] also, Figure 1ASpecific examples can support both single TRP mode transmission and MTRP transmission. Specifically, in single TRP mode, terminal device 120 communicates with the network via first TRP 130-1 / second TRP 130-2. Alternatively, in MTRP mode, terminal device 120 communicates with the network via both first TRP 130-1 and second TRP 130-2.

[0045] As a specific example implementation, during PUSCH STxMP, terminal device 120 communicates with first TRP 130-1 via panel 125-1 and simultaneously communicates with second TRP 130-2 via panel 125-2.

[0046] Furthermore, network device 110 can provide one or more serving cells, and the first TRP 130-1 and the second TRP 130-2 can be included in the same serving cell or different serving cells. In other words, Figure 1A Specific examples support both inter-cell transmission and intra-cell transmission.

[0047] Figure 1B As shown Figure 1A The example scenario shown is a communication network 100A. Figure 1B In a specific example, the first TRP 130-1 and the second TRP 130-2 are included in the same serving cell 140. In this case, MTRP transmission is performed as an intra-cell transmission.

[0048] Figure 1C As shown Figure 1A Another example scenario of the communication network 100A shown. In Figure 1C In a specific example, the first TRP 130-1 and the second TRP 130-2 are included in different serving cells 140-1 and 140-2. In this case, MTRP transmission is performed as inter-cell transmission.

[0049] The communications in communication network 100A may conform to any suitable standard, including but not limited to Long Term Evolution (LTE), LTE-Evolution, LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), and Global System for Mobile Communication (GSM). Furthermore, these communications may be performed according to any generation of communication protocols currently known or to be developed in the future. Examples of communication protocols include, but are not limited to, first-generation (1G), second-generation (2G), 2.5G, 2.75G, third-generation (3G), fourth-generation (4G), 4.5G, fifth-generation (5G), 5.5G, 5G-Advanced, or sixth-generation (6G) protocols.

[0050] It should be understood that Figures 1A to 1C The number, connection relationships, and types of the elements shown (i.e., terminal device 120, panel 125, network device 110, TRP 130, and cell 140) are for illustrative purposes only and do not imply any limitation. The communication network 100A may include any suitable number of elements suitable for implementing embodiments of this disclosure.

[0051] In some scenarios, the panel can beamform in the same or similar directions. In other scenarios, the panel can beamform in different directions. Figure 2 A schematic diagram 200 is illustrated, which illustrates an example of a beam set of a panel in which embodiments of the present disclosure may be implemented. Figure 2 As shown in Example 210, the beam 1 of panel 1 and the beam 2 of panel 2 have almost opposite directions. Figure 2 As shown in Example 220, the beam 1 of panel 1 and the beam 2 of panel 2 have similar directions.

[0052] EIRP is defined per UE, not per panel. An EIRP measured when two panels are beamforming in the same or similar directions may be higher than an EIRP measured when the two panels are beamforming in different directions. In other words, the maximum output power per panel may differ. For example, in Example 210, a higher maximum output power per panel or beam may be assumed. In Example 220, a lower maximum output power per panel or beam may be assumed.

[0053] In view of this, the embodiments of this disclosure provide a communication solution for UL PCs to optimize UL PCs used for STxMPs. This solution will be referenced below. Figure 3 and Figure 4 Describe it.

[0054] Figure 3 A schematic diagram is illustrated, which illustrates a communication process 300 according to some example embodiments of this disclosure. For discussion purposes, reference will be made to... Figures 1A to 1C Describe the process.

[0055] Process 300 may involve terminal device 120, network device 110 (either or both of first network device 110-1 and second network device 110-2), and optionally may involve TRP 130 (including first TRP 130-1 and second TRP 130-2). In other words, the specific implementation of some embodiments does not depend on TRP 130. Terminal device 120 may be deployed with first panel 125-1 and second panel 125-2. Furthermore, first panel 125-1 corresponds to a first antenna port set, and second panel 125-2 corresponds to a second antenna port set.

[0056] In addition, the first TRP 130-1 is connected to the first network device 110-1, while the second TRP 130-2 is connected to both the first network device 110-1 and the second network device 110-2. Furthermore, the first TRP 130-1 and the second TRP may be in the same serving cell or in different serving cells.

[0057] In the following description, although some embodiments of this disclosure are illustrated with reference to two TRPs and two panels, these embodiments are for illustrative purposes only and are intended to assist those skilled in the art in understanding and implementing this disclosure, and are not intended to limit the scope of this disclosure in any way. It should be understood that this disclosure described herein can be implemented in various ways other than those described below.

[0058] Furthermore, it should be understood that the operations at terminal device 120 and network device 110 should be coordinated. In other words, network device 110 and terminal device 120 should have a common understanding regarding configurations, parameters, etc. This common understanding can be achieved through any suitable interaction between network device 110 and terminal device 120, or by both network device 110 and terminal device 120 applying the same rules / policies. Although some operations are described below from the perspective of terminal device 120, it should be understood that the corresponding operations should be performed by network device 110. Similarly, although some operations are described from the perspective of network device 110, it should be understood that the corresponding operations should be performed by terminal device 120. For the sake of brevity, some identical or similar content is omitted here.

[0059] Furthermore, in the following description, some interactions (such as exchanging capability-related information, configuring / scheduling / activating resources / transmitting, etc.) are performed between terminal device 120 and network device 110. It should be understood that these interactions can be implemented in a single signaling / message or multiple signaling / messages, including system information, radio resource control (RRC) messages, DCI, uplink control information (UCI), MAC CE, etc. This disclosure is not limited thereto.

[0060] In some implementations, the one or more interactions can be specific to a particular panel, TRP, capability value, CORESET, etc. This allows for flexible configuration or activation of PUSCH STxMP.

[0061] Furthermore, it should be understood that although the features / operations are discussed separately in the specific example implementations, any suitable combination of the features / operations described in the different example implementations may be used unless explicitly stated otherwise.

[0062] refer to Figure 3 Terminal device 120 can transmit UE capability information to network device 110. For example, network device 110 can send RRC configuration regarding UE capability reports to terminal device 120. Terminal device 120 can report its capabilities to network device 110 based on the RRC configuration.

[0063] In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports power limiting information for beamforming. In some embodiments, the power limiting information may indicate maximum output power. In some embodiments, the power limiting information may indicate maximum power reduction (MPR). In some embodiments, the power limiting information may indicate maximum permitted emission (MPE). It should be understood that any combination of this information is also feasible.

[0064] In some implementations, the capabilities of terminal device 120 may include information about whether terminal device 120 supports the maximum output power (denoted as Pcmax) per panel or beam. For example, the capabilities of terminal device 120 may include information about whether terminal device 120 supports Pcmax1 for panel 125-1 and Pcmax2 for panel 125-2 for calculating the Tx power of terminal device 120. For example, can it be assumed that... Where t represents the panel / beam. In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports information based on the number of beams in the beam set (i.e., the number of panels) and reference power limitation information (e.g., ...). This information is used to determine the power limiting information for beams in the beam set. For example, does each panel assume 1 / N? , where N represents the number of panels used for transmission. In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports reference power limit information (e.g., The information used to determine the power limiting information for that beam includes the scaling factor of the beams in the beam set. For example, whether to assume β for panel 1 and panel 2 respectively. and β β1 represents the scaling factor of beam 1 of panel 1, and β2 represents the scaling factor of beam 2 of panel 2. In some embodiments, β and β The sum can be greater than or equal to .

[0065] In other words, the capabilities of terminal device 120 may include information about whether terminal device 120 supports Pcmax per beam or per TCI. Alternatively, the capabilities of terminal device 120 may include information about whether terminal device 120 supports more than one Pcmax for STxMP. Alternatively, the capabilities of terminal device 120 may include information about the number of Pcmaxes supported by terminal device 120 for STxMP.

[0066] In some implementations, the capabilities of terminal device 120 may include information about whether terminal device 120 supports power limiting information dedicated to STxMP. For example, the capabilities of terminal device 120 may include information about whether terminal device 120 supports additional Pcmax for STxMP. That is, for UL multi-input multi-output (MIMO) transmission on a single panel, it can be assumed that... If UL STxMP is used, an additional Pcmax can be assumed (e.g., In some implementation schemes, This can be applied to the total power of all panels used in STxMP. In some implementations, It can be applied to every panel used for STxMP.

[0067] In some implementations, the capabilities of terminal device 120 may include information about whether terminal device 120 supports the same power limiting information for STxMP and transmission across a single panel. For example, the capabilities of terminal device 120 may include information about whether terminal device 120 supports the same Pcmax for STxMP and other single-panel UL transmissions. For example, to calculate the Tx power of terminal device 120, assumptions may be made... Regardless of the UL proposal.

[0068] In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports MPR per UE, per beam, or per panel. In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports MPE per UE, per beam, or per panel. In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports additional MPR for STxMP. In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports additional MPE for STxMP. In some embodiments, additional MPE for STxMP may be applied to the total power reduction for all panels used for STxMP. In some embodiments, additional MPE for STxMP may be applied to the power reduction for each panel used for STxMP. In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports the same MPR for STxMP and other individual panel UL transmissions. In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports the same MPE for STxMP and other individual panel UL transmissions.

[0069] Based on the capabilities of terminal device 120, network device 110 can be configured to apply one or more of the Pcmax assumption, MPR assumption, and MPE assumption at terminal device 120.

[0070] In some embodiments, the capabilities of terminal device 120 may include information regarding the reporting of power limiting information. In some embodiments, this includes information about whether terminal device 120 supports CSI reporting that includes power limiting information. In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports reporting of power limiting information associated with an SRI set. In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports reporting of power limiting information associated with a TCI state set. In some embodiments, the capabilities of terminal device 120 may include information about whether terminal device 120 supports PHR that includes power limiting information for STxMP. It should be understood that any combination of the above capabilities is also feasible.

[0071] Continue to refer to Figure 3Network device 110 may send an instruction 320 to terminal device 120 to enable STxMP. For STxMP, terminal device 120 may determine 330 a beam set for STxMP, i.e., a beam set corresponding to the panels of terminal device 120 to be transmitted simultaneously. In some embodiments, terminal device 120 may receive a DL RS set from network device 110. Based on measurements of the DL RS set, terminal device 120 may determine the beam set for STxMP.

[0072] In some implementations, terminal device 120 may send a UL RS set to network device 110. Network device 110 may measure the UL RS set and determine the beam set for STxMP based on the measurement results. Network device 110 may indicate the beam set to terminal device 120. Accordingly, terminal device 120 may determine the beam set based on the indication from network device 110.

[0073] Continue to refer to Figure 3 Terminal device 120 can determine power limiting information for STxMP 340 based on information from the beam set. In some embodiments, the beam set information may include the orientation of the beams in the beam set. In some embodiments, the beam set information may include the gain of the beams in the beam set. In some embodiments, the beam set information may include the width of the beams in the beam set. In some embodiments, the beam set information may include the RSRP or path loss corresponding to the beams in the beam set. It should be understood that any combination of the above information is also feasible.

[0074] Based on the beam set information, terminal device 120 can determine appropriate power limiting information for STxMP. In some embodiments, terminal device 120 can determine power limiting information for each beam or panel used in STxMP. For example, if the beam set includes a first beam and a second beam, terminal device 120 can determine first power limiting information for the first beam and second power limiting information for the second beam. For example, terminal device 120 can assume... , where t represents panel / beam.

[0075] In some implementations, terminal device 120 may determine reference power limitation information for terminal device 120 (e.g., Furthermore, based on the number of beams in the beam set and reference power limiting information, the power limiting information for the beams in the beam set is determined. For example, terminal device 120 can use 1 / N Determine the maximum output power for each panel, where N represents the number of beams.

[0076] In some implementations, terminal device 120 may determine reference power limitation information for terminal device 120 (e.g., And based on the reference power limiting information and the scaling factor of the beams in the beam set, the power limiting information for that beam is determined. For example, the terminal device 120 can use β and β The maximum output power of panel 1 and panel 2 is determined, where β1 represents the scaling factor of beam 1 of panel 1 and β2 represents the scaling factor of beam 2 of panel 2.

[0077] In some implementations, terminal device 120 can determine power limiting information dedicated to STxMP as power limiting information for beamforming. For example, terminal device 120 can... The total maximum output power of all beams in the beam set is determined. In some alternative implementations, It can be applied to every panel used for STxMP.

[0078] In some implementations, terminal device 120 may determine the same power limiting information for STxMP and transmission across a single panel. In some implementations, terminal device 120 may determine reference power limiting information for terminal device 120 (e.g., And determine the reference power limiting information as the power limiting information for each beam in the beam set (e.g., each beam).

[0079] Continue to refer to Figure 3 Terminal device 120 can perform 350 STxMP based on determined power limitation information. In some embodiments where STxMP is performed using two panels, terminal device 120 can determine a first Tx power for a first channel or RS based on the determined power limitation information, and determine a second Tx power for a second channel or RS based on the determined power limitation information and the first Tx power. Terminal device 120 can simultaneously transmit the first channel or RS at the first Tx power and transmit the second channel or RS at the second Tx power.

[0080] Continue to refer to Figure 3 Terminal device 120 can send power limitation information determined by 360 to network device 110. In this way, terminal device 120 can report power limitation information for STxMP to the network. In some embodiments, the reporting of power limitation information can be performed before STxMP execution. In some embodiments, the reporting of power limitation information can be performed after STxMP execution.

[0081] In some implementations, terminal device 120 may transmit its capability, including power limiting information. In other words, terminal device 120 may transmit power limiting information in a UE capability report. For example, power limiting information associated with maximum output power may be reported, depending on different Pcmax assumptions. N, scaling factor or .

[0082] In some implementations, terminal device 120 may send power limiting information in the CSI report. This allows for more dynamic reporting of power limiting information for STxMP. The power limiting information (e.g., maximum output power assumptions) may vary depending on the choice of UL beam.

[0083] In some implementations, network device 110 may be configured with beam reporting quantities and resources for beam measurement and reporting, and terminal device 120 may send power limiting information in the CSI report based on this configuration. In some implementations, terminal device 120 may report information about the beam set and power limiting information for the beam set. Reporting may be performed at different granularities.

[0084] For example, Pcmax is assumed to be per UE. In this case, terminal device 120 can report information about whether beams in the beam set can be transmitted simultaneously via the same Pcmax. For example, this information can be indicated via a 1-bit or 2-bit indicator. In this way, higher-level reporting can be achieved. Furthermore, scaling factors (e.g., β1, β2, etc.) used for beams in the beam set can be reported. In this way, more granular reporting can be achieved.

[0085] In some implementations, terminal device 120 may send group-based beam reports including power limiting information. In some implementations, network device 110 may be configured for group-based beam reports for STxMP to report power limiting information. In some implementations, based on the capabilities of terminal device 120, network device 110 may be configured to simultaneously receive DL RS reports corresponding to beams in the beam set.

[0086] In some implementations, group-based beam reporting may include an indicator of power limiting information. In some implementations, the indicator may be per resource group. In some implementations, the power limiting information may be associated with a beam set. For example, example group-based beam reporting can be configured as shown in Table 1. Table 1

[0087] In the context of this disclosure, it is assumed that the beam sets used for STxMP correspond to CRI / SSBRI #1 and #2. It should be understood that reporting four resource groups is merely an example, and the number of resource groups can be any suitable number, depending on the configuration from the network.

[0088] As shown in Table 1, the field "Indicator for Resource Group 1" indicates the power limiting information for CRI / SSBRI #1 and #2 of Resource Group 1. The field "Indicator for Resource Group 2" indicates the power limiting information for CRI / SSBRI #1 and #2 of Resource Group 2. The field "Indicator for Resource Group 3" indicates the power limiting information for CRI / SSBRI #1 and #2 of Resource Group 3. The field "Indicator for Resource Group 4" indicates the power limiting information for CRI / SSBRI #1 and #2 of Resource Group 4.

[0089] In some implementations, power limiting information can be associated with beams in a beam set. For example, example group-based beam reporting can be configured as shown in Table 2. Table 2

[0090] As shown in Table 2, the field "Indicator for CRI / SSBRI #1 of Resource Group 1" indicates the power limiting information for CRI / SSBRI #1 of Resource Group 1. The field "Indicator for CRI / SSBRI #2 of Resource Group 1" indicates the power limiting information for CRI / SSBRI #2 of Resource Group 1. The field "Indicator for CRI / SSBRI #1 of Resource Group 2" indicates the power limiting information for CRI / SSBRI #1 of Resource Group 2. The field "Indicator for CRI / SSBRI #2 of Resource Group 2" indicates the power limiting information for CRI / SSBRI #2 of Resource Group 2. The field "Indicator for CRI / SSBRI #1 of Resource Group 3" indicates the power limiting information for CRI / SSBRI #1 of Resource Group 3. The field "Indicator for CRI / SSBRI #2 of Resource Group 3" indicates the power limiting information for CRI / SSBRI #2 of Resource Group 3. The field "Indicator for CRI / SSBRI #1 of Resource Group 4" indicates the power limiting information for CRI / SSBRI #1 of Resource Group 4. The field "Indicator for CRI / SSBRI #2 of Resource Group 4" indicates the power limiting information for CRI / SSBRI #2 of Resource Group 4.

[0091] In some alternative or additional embodiments, the indicator may report per group-based beam rather than per resource group. In some alternative or additional embodiments, the scaling factor may also be reported per beam (i.e., per CRI / SSBRI).

[0092] In some alternative or additional implementations, the bit length of the indicator for power limiting information may depend on the number of supported assumptions. For example, if only two maximum power assumptions are supported, then it is 1 bit per resource group.

[0093] In some implementations, if group-based beam reporting is configured to report UL beam pairs for STxMP, RSRP and differential RSRP related information may not be reported, as this report is used to indicate UL beam pairs. This saves signaling overhead.

[0094] In some implementations, if group-based beam reporting is configured to report UL beam pairs for STxMP, RSRP and differential RSRP related information can be replaced with path loss and differential path loss information. This saves signaling overhead.

[0095] In some implementations, if group-based beam reporting is configured to report UL beam pairs for STxMP, RSRP and differential RSRP related information can be replaced with Pcmax information. This saves signaling overhead.

[0096] It should be noted that although the above examples are described in conjunction with RSRP reports, this disclosure is not limited thereto, and signal to interference plus noise ratio (SINR) reports are also feasible.

[0097] In some implementations, terminal device 120 may send a panel information report (i.e., a capability index report) that includes power limiting information. In some implementations, network device 110 may be configured for STxMP capability index reporting to report power limiting information. In some implementations, based on the capabilities of terminal device 120, network device 110 may be configured to simultaneously receive DL RS reports corresponding to different capability indices.

[0098] In some implementations, the capability index report may include an indicator of power limitation information. In some implementations, the indicator may be per beam set (i.e., per panel). In some implementations, the power limitation information may be associated with a panel. For example, an example capability index report may be configured as shown in Table 3. Table 3

[0099] As shown in Table 3, the field "Indicator of Set 1" indicates the power limitation information of beam set 1 for panel 1. Beam set 1 includes the beams of panel 1 and panel 2. The field "Indicator of Set 2" indicates the power limitation information of beam set 2 for panel 2. Beam set 2 includes the beams of panel 1 and panel 2. It should be noted that UL beam sets corresponding to different capability indices can be transmitted simultaneously.

[0100] In some implementations, power limiting information can be associated with the panel's beam. For example, an example capability index report can be configured as shown in Table 4. Table 4

[0101] As shown in Table 4, the field "Indicator for CRI / SSBRI #1" indicates the power limit information for CRI / SSBRI #1. The field "Indicator for CRI / SSBRI #2" indicates the power limit information for CRI / SSBRI #2. The field "Indicator for CRI / SSBRI #3" indicates the power limit information for CRI / SSBRI #3. The field "Indicator for CRI / SSBRI #4" indicates the power limit information for CRI / SSBRI #4.

[0102] In some alternative or additional embodiments, the indicator may be reported per capability index rather than per beam set. In some alternative or additional embodiments, the scaling factor may also be reported per beam (i.e., per CRI / SSBRI).

[0103] In some alternative or additional implementations, the bit length of the indicator for power limiting information may depend on the number of assumptions supported. For example, if only two maximum power assumptions are supported, then it is 1 bit per beam set.

[0104] In some implementations, if the capability index report is configured to report UL beam pairs for STxMP, RSRP and differential RSRP related information may not be reported, as this report is used to indicate UL beam pairs. This saves signaling overhead.

[0105] In some implementations, if the capability index report is configured to report UL beam pairs for STxMP, RSRP and differential RSRP related information can be replaced with path loss and different path loss information. This saves signaling overhead.

[0106] In some implementations, if the capability index report is configured to report UL beam pairs used for STxMP, RSRP and differential RSRP related information can be replaced with Pcmax information. This saves signaling overhead.

[0107] It should be noted that although the above examples are described in conjunction with RSRP reports, this disclosure is not limited thereto, and SINR reports are also feasible.

[0108] In some implementations, terminal device 120 may transmit power limiting information associated with an SRI set (i.e., an SRI combination). The SRI set corresponds to a beam set used for STxMP. In other words, based on the transmitted SRS, terminal device 120 may report the supported SRI combinations and associated power limiting information for STxMP.

[0109] In some implementations, power limitation information associated with the SRI set may be transmitted via RRC signaling. In some implementations, power limitation information associated with the SRI set may be transmitted via MAC CE. In some implementations, power limitation information associated with the SRI set may be transmitted via UCI. In some implementations, the scaling factor of the beams in the beam set may also be reported.

[0110] In some implementations, for a given power assumption, the supported SRI combinations can be reported. For example, an SRI combination could be {SRS Resource Set 1 SRS Resource 1, SRS Resource Set 2 SRS Resource 2}; {SRS Resource Set 1 SRS Resource 3, SRS Resource Set 2 SRS Resource 4}; with the same Pcmax. That is, the UL beams corresponding to SRI 1 / 3 from SRS Resource Set 1 and SRI 2 / 4 from SRS Resource Set 2 can be used in STxMP, and the maximum output power of each beam is Pcmax.

[0111] Alternatively or otherwise, terminal device 120 may send power limiting information unrelated to another SRI set. In other words, for a power assumption, it may report unsupported SRI combinations.

[0112] In some implementations, supported power assumptions may be reported for a SRI combination. Alternatively or otherwise, unsupported power assumptions may be reported for a SRI combination.

[0113] In some implementations, terminal device 120 may transmit power limiting information associated with a TCI state set. In other words, based on the activated or configured TCI state / TCI state combination, terminal device 120 may report the TCI state set (i.e., the TCI state combination) and the associated power limiting information for STxMP. In this way, the configured or activated TCI state / TCI state combination may reflect the NW selection of the UL beam combination, and terminal device 120 may further select or report some or all of the power assumptions in those UL beam combinations.

[0114] In some implementations, power limiting information associated with the TCI state set can be transmitted via RRC signaling. In some implementations, power limiting information associated with the TCI state set can be transmitted via MAC CE. In some implementations, power limiting information associated with the TCI state set can be transmitted via UCI. In some implementations, the scaling factor of the beams in the beam set can also be reported.

[0115] In some implementations, for a power assumption, supported TCI state combinations can be reported. For example, a TCI state combination could be {TCI state 1, TCI state 2}; {TCI state 3, TCI state 4}; with the same Pcmax. That is, the UL beams corresponding to TCI states 1 / 3 and TCI states 2 / 4 can be used in STxMP, and the maximum output power of each beam is Pcmax. As another example, a TCI state combination could be TCI code point 000; TCI code point 001; with the same Pcmax. That is, the UL beams corresponding to TCI code points 000 and 001 can be used in STxMP, and the maximum output power of each beam is Pcmax. As yet another example, a TCI state combination could be the first activated TCI state combination in the MAC CE; with the same Pcmax. That is, the UL beams in the MAC CE corresponding to the first activated TCI state combination can be used in STxMP, and the maximum output power of each beam is Pcmax.

[0116] Alternatively or otherwise, terminal device 120 may send power limiting information that is not associated with another TCI state set. In other words, for a power assumption, an unsupported TCI state combination may be reported.

[0117] In some implementations, supported power assumptions may be reported for a combination of TCI states. Alternatively or otherwise, unsupported power assumptions may be reported for a combination of TCI states.

[0118] In some implementations, terminal device 120 may transmit a Power Headroom (PHR) that includes power limiting information for STxMP. For example, terminal device 120 may report Pcmax and MPR per panel / beam or per UE in the PHR. Since the power headroom is based on actual transmission or reference transmission, the power headroom can better reflect the situation on the UE side.

[0119] Figure 4A schematic diagram 400 is illustrated, which illustrates an example PHR MAC CE according to some example embodiments of the present disclosure. For illustration purposes, a single-entry PHR MAC CE is shown. It should be understood that the single-entry PHR is merely an example, and the present disclosure can also be applied to multiple-entry PHRs, enhanced single-entry PHRs, enhanced multiple-entry PHRs, enhanced single-entry PHRs for multiple TRPs, or enhanced multiple-entry PHRs for multiple TRPs.

[0120] like Figure 4 As shown, the R field indicates a reserved bit set to 0. The PH field indicates the power headroom level. The P field indicates the power headroom level if configured. mpe-Reporting-FR2 If the serving cell is running on FR2, and the P-MPR value applied to meet MPE requirements is less than P-MPR_00, the MAC entity should set this field to 0; otherwise, it should be set to 1. If not configured... mpe- Reporting-FR2 If the serving cell is operating on FR1, the P field indicates whether power backoff is applied due to power management. If no power backoff is applied due to power management, then if the corresponding P... CMAX,f,c The fields will have different values, and the MAC entity should set the P field to 1. CMAX,f,c The field indicates the information used to calculate the previous PH field. If configured mpe-Reporting-FR2 The serving cell operates on FR2, and if the P field is set to 1, the MPE field indicates the power backoff applied to meet MPE requirements. If not configured... mpe-Reporting-FR2 Alternatively, if the serving cell is operating on FR1, or if the P field is set to 0, the R bit may be present instead. mpe-Reporting-FR2 Indicates whether the UE should report MPE P-MPR in the PHR MAC CE.

[0121] like Figure 4 As shown, field 401 may indicate the power assumptions (e.g., maximum output power) used for STxMP. In some embodiments, if the terminal device 120 supports per-panel / beam Pcmax for STxMP, field 401 may indicate Where t corresponds to panel / beam. In some implementations, field 401 may indicate if the terminal device 120 supports additional Pcmax for STxMP. In some implementations, if terminal device 120 supports the same Pcmax for STxMP and other single-panel UL transmissions, field 401 may indicate... .

[0122] like Figure 4As shown, field 402 can indicate the MPR / MPE for STxMP. In some embodiments, if terminal device 120 supports per-panel / beam MPR / MPE for STxMP, then field 402 can indicate the MPE. t , where t corresponds to the panel / beam. MPE t This indicates the power back-off applied to meet the MPE requirements of the panel / beam. Additionally, information about the applied panel / beam / beamset can be reported. In some embodiments, if the terminal device 120 supports additional MPR / MPE for STxMP, field 402 can indicate the MPE. STxMP MPE STxMP Indicates the power back-off applied to meet the MPE requirements of STxMP. MPE STxMP This can be an absolute value or an accumulated value. In some implementations, if the terminal device 120 supports the same Pcmax for STxMP and other single-panel UL transmissions, field 402 can indicate MPE. STxMP This refers to the total power reduction for all panels used in STxMP. In some implementations, the additional MPE for STxMP may be the power reduction for each panel used in STxMP. In some implementations, MPE can be reported or configured. STxMP Is this information for the total power reduction across all panels used in STxMP, or for the power reduction per panel used in STxMP?

[0123] In some implementations, terminal device 120 may transmit a PHR including power limiting information if the conditions for triggering a PHR are met for at least one beam in the beam set. In some implementations, terminal device 120 may transmit a PHR if the conditions for triggering a PHR are met for one beam in the beam set. In some implementations, terminal device 120 may transmit a PHR if the conditions for triggering a PHR are met for all beams in the beam set.

[0124] For example, the condition for triggering a PHR could be: since the last PHR was sent in the MAC entity, for each panel / beam, or for all panels / beams, the measured periodic-MPR (P-MPR) applied to meet the FR2 MPE requirement is equal to or greater than the value of at least one active FR2 serving cell. mpe-Threshold . mpe-ThresholdThis indicates the threshold, in dB, used for reporting MPE P-MPR when FR2 is configured. For example, a PHR trigger condition could be: since the last PHR was sent due to an MPR issue, for each panel / beam, or for all panels / beams, the measured P-MPR applied to meet FR2 MPE requirements for at least one active FR2 serving cell has changed by more than [percentage missing]. phr-Tx- PowerFactorChange dB. phr-Tx-PowerFactorChange Indicates the value used in PHR reports, in dB. Value dB1 corresponds to 1 dB, dB3 corresponds to 3 dB, and so on.

[0125] In some implementations, based on the capabilities of terminal device 120, network device 110 may be configured to apply one or more Pcmax assumptions or MPR assumptions at terminal device 120. Terminal device 120 may generate PHR based on this configuration.

[0126] This concludes the description of a solution for a UL PC used in STxMP. Using process 300, a suitable UL PC for STxMP can be implemented. This ensures high transmission power while meeting maximum EIRP requirements, thereby guaranteeing the quality of UL transmission. It should be understood that the operations described in process 300 can be performed in any suitable order and combination, and this disclosure is not limiting in this regard.

[0127] Therefore, embodiments of this disclosure provide a method for communication implemented at a terminal device. This method will be referenced below. Figure 5 Describe it.

[0128] Figure 5 Example communication method 500 implemented at a terminal device according to some embodiments of the present disclosure is illustrated. For example, method 500 may be implemented as follows: Figures 1A to 1C The method is executed at the terminal device 120 shown. It should be understood that method 500 may include additional boxes not shown and / or some boxes as shown may be omitted from the execution, and the scope of this disclosure is not limited in this respect.

[0129] At box 510, terminal device 120 determines the beam set for STxMP.

[0130] At block 520, terminal device 120 determines power limiting information for STxMP based on information about the beam set. In some embodiments, the beam set information may include at least one of the following: the direction of the beams in the beam set; the gain of the beams in the beam set; or the width of the beams in the beam set.

[0131] In some embodiments where the beam set includes a first beam and a second beam, the terminal device 120 may determine first power limiting information for the first beam and second power limiting information for the second beam.

[0132] In some implementations, terminal device 120 may determine reference power limiting information for terminal device 120, and determine power limiting information for beams in beam set based on the number of beams in beam set and the reference power limiting information.

[0133] In some implementations, terminal device 120 may determine reference power limiting information for the terminal device and determine power limiting information for the beam based on the reference power limiting information and the scaling factor of the beam in the beam set.

[0134] In some implementations, terminal device 120 may determine power limiting information dedicated to simultaneous transmission across panels as power limiting information for beam sets.

[0135] In some implementations, terminal device 120 may determine reference power limiting information for terminal device 120 and determine the reference power limiting information as power limiting information for beams in the beam set.

[0136] At box 530, terminal device 120 performs STxMP based on power limiting information.

[0137] In some implementations, terminal device 120 may transmit its capabilities to network device 110. The capabilities of terminal device 120 may include at least one of the following: information regarding whether terminal device 120 supports power limiting information for beamforming; information regarding whether terminal device 120 supports power limiting information dedicated to STxMP; information regarding whether terminal device 120 supports the same power limiting information for STxMP and transmission across a single panel; information regarding whether terminal device 120 supports CSI reporting including power limiting information; information regarding whether terminal device 120 supports reporting power limiting information associated with an SRI set; information regarding whether terminal device 120 supports reporting power limiting information associated with a TCI status set; or information regarding whether terminal device 120 supports PHR including power limiting information.

[0138] In some implementations, terminal device 120 may send power limiting information to network device 110. In some implementations, terminal device 120 may transmit its own power limiting information.

[0139] In some embodiments, terminal device 120 may send a group-based beam report that includes power limiting information associated with a beam set or beams within a beam set. In some embodiments, terminal device 120 may send a panel information report that includes power limiting information associated with a panel or beams of a panel.

[0140] In some implementations, terminal device 120 may send power limiting information associated with an SRI set. In some implementations, terminal device 120 may send power limiting information not associated with another SRI set.

[0141] In some implementations, terminal device 120 may send power limiting information associated with a TCI state set. In some implementations, terminal device 120 may send power limiting information not associated with another TCI state set.

[0142] In some implementations, terminal device 120 may send a Power Headroom Report (PHR) including power limiting information. In some implementations, terminal device 120 may send a PHR including power limiting information if the conditions for triggering a power headroom report are met for at least one beam in the beam set.

[0143] Using method 500, a suitable UL PC for STxMP can be executed. This ensures the highest possible transmission power while meeting maximum EIRP requirements, thereby guaranteeing the quality of UL transmission. It should be understood that the operation of method 500 corresponds to the combination of... Figure 3 and Figure 4 The process is described here, so for the sake of brevity, other details are omitted.

[0144] Figure 6 This is a simplified block diagram of device 600 suitable for implementing embodiments of the present disclosure. Device 600 can be considered as follows: Figures 1A to 1C Another example of the implementation of the terminal device 120 or network device 110 is shown. Therefore, device 600 may be implemented at or be implemented as at least a part of the terminal device or the network device at the terminal device 120 or the network device 110.

[0145] As shown in the figure, device 600 includes a processor 610, a memory 620 coupled to the processor 610, a suitable transceiver 640 coupled to the processor 610, and a communication interface coupled to the transceiver 640. The memory 610 stores at least a portion of a program 630. Depending on the requirements, the transceiver 640 can be used for bidirectional or unidirectional communication. The transceiver 640 may include at least one of a transmitter 642 or a receiver 644. The transmitter 642 and receiver 644 may be functional modules or physical entities. The transceiver 640 has at least one antenna to facilitate communication; however, in practice, the access node mentioned in this application may have several antennas. The communication interface can represent any interface necessary for communication with other network elements, such as the X2 / Xn interface for bidirectional communication between eNBs / gNBs, the S1 / NG interface for communication between the Mobility Management Entity (MME) / Access and Mobility Management Function (AMF) / SGW / UPF and eNBs / gNBs, the Un interface for communication between eNBs / gNBs and relay nodes (RNs), or the Uu interface for communication between eNBs / gNBs and terminal equipment.

[0146] Assume that program 630 includes program instructions that, when executed by the associated processor 610, enable device 600 to operate according to embodiments of this disclosure, as referenced herein. Figures 1A to 5 The embodiments discussed herein may be implemented by computer software executable by processor 610 of device 600, or by hardware, or by a combination of software and hardware. Processor 610 may be configured to implement various embodiments of this disclosure. Furthermore, a combination of processor 610 and memory 620 may form a processing unit 650 suitable for implementing various embodiments of this disclosure.

[0147] Memory 620 can be of any type suitable for a local technology network and can be implemented using any suitable data storage technology, such as, as non-limiting examples, non-transitory computer-readable storage media, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory, and removable memory. Although only one memory 620 is shown in device 600, several physically different memory modules may exist in device 600. Processor 610 can be of any type suitable for a local technology network and may include one or more of the following: as non-limiting examples, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), and processors based on multi-core processor architectures. Device 600 may have multiple processors, such as application-specific integrated circuit (ASIC) chips, which are time-dependent on a clock that synchronizes the main processor.

[0148] In some implementations, a terminal device includes circuitry configured to: determine a beam set for simultaneous transmission across panels; determine power limiting information for simultaneous transmission across panels based on information from the beam set; and perform simultaneous transmission across panels based on the power limiting information.

[0149] As used herein, the term "circuit" can refer to hardware circuitry and / or a combination of hardware and software circuitry. For example, a circuit can be a combination of analog and / or digital hardware circuitry with software / firmware. As another example, a circuit can be any part of a hardware processor with software, including digital signal processors, software, and memory, which work together to enable a device (such as a terminal device or network device) to perform various functions. In yet another example, a circuit can be hardware circuitry and / or a processor (such as a microprocessor or a portion thereof) that requires software / firmware to operate, but which may be absent when operation is not required. As used herein, the term "circuit" also encompasses a specific implementation of hardware circuitry or a processor alone, or a portion thereof, and its accompanying software and / or firmware.

[0150] In summary, the implementation schemes disclosed herein provide the following solutions.

[0151] In one solution, a terminal device includes a processor configured to cause the terminal device to: determine a beam set for simultaneous transmission across panels; determine power limiting information for simultaneous transmission across panels based on information of the beam set; and perform simultaneous transmission across panels based on the power limiting information.

[0152] In some implementations, the information of the beam set includes at least one of the following: the direction of the beams in the beam set; the gain of the beams in the beam set; or the width of the beams in the beam set.

[0153] In some implementations, the beam set includes a first beam and a second beam, and the terminal device determines power limiting information by: determining first power limiting information for the first beam; and determining second power limiting information for the second beam.

[0154] In some implementations, the terminal device determines power limiting information by: determining reference power limiting information for the terminal device; and determining power limiting information for the beams in the beam set based on the number of beams in the beam set and the reference power limiting information.

[0155] In some implementations, the terminal device determines power limiting information by: determining reference power limiting information for the terminal device; and determining power limiting information for the beam based on the reference power limiting information and the scaling factor of the beams in the beam set.

[0156] In some implementations, the terminal device determines the power limiting information by determining power limiting information dedicated to simultaneous transmission across panels as power limiting information for beam sets.

[0157] In some implementations, the terminal device determines power limiting information by: determining reference power limiting information for the terminal device; and determining the reference power limiting information as power limiting information for beams in the beam set.

[0158] In some implementations, the terminal device is further configured to transmit to the network device the terminal device a capability including at least one of the following: information regarding whether the terminal device supports power limiting information for beamforming; information regarding whether the terminal device supports power limiting information dedicated to simultaneous transmission across panels; information regarding whether the terminal device supports the same power limiting information for simultaneous transmission across panels and transmission across a single panel; information regarding whether the terminal device supports channel state information reporting including power limiting information; information regarding whether the terminal device supports reporting power limiting information associated with a set of probe reference signal resource indicators; information regarding whether the terminal device supports reporting power limiting information associated with a set of transmission configuration indicator states; or information regarding whether the terminal device supports power clearance reporting including power limiting information.

[0159] In some implementations, the terminal device further enables the terminal device to send power limiting information to the network device.

[0160] In some implementations, a terminal device is made to transmit power limiting information by at least one of the following methods: transmitting the terminal device's ability to include power limiting information; transmitting a group-based beam report that includes power limiting information associated with a beam set or beams in a beam set; transmitting a panel information report that includes power limiting information associated with a panel or a beam of a panel; transmitting power limiting information associated with a set of probe reference signal resource indicators; transmitting power limiting information not associated with another set of probe reference signal resource indicators; transmitting power limiting information associated with a set of transmission configuration indicator states; transmitting power limiting information not associated with another set of transmission configuration indicator states; or transmitting a power clearance report that includes power limiting information.

[0161] In some implementations, the terminal device sends a power clearance report by determining that at least one beam in the beam set meets the conditions for triggering a power clearance report.

[0162] In some implementations, the power limiting information indicates at least one of the following: maximum output power; maximum power reduction; or maximum permissible transmission.

[0163] In another solution, a communication method includes: determining, at a terminal device, a beam set for simultaneous transmission across panels; determining power limiting information for simultaneous transmission across panels based on information from the beam set; and performing simultaneous transmission across panels based on the power limiting information.

[0164] In some implementations, the information of the beam set includes at least one of the following: the direction of the beams in the beam set; the gain of the beams in the beam set; or the width of the beams in the beam set.

[0165] In some implementations, the beam set includes a first beam and a second beam, and determining the power limiting information includes: determining first power limiting information for the first beam; and determining second power limiting information for the second beam.

[0166] In some implementations, determining power limiting information includes: determining reference power limiting information for the terminal device; and determining power limiting information for the beams in the beam set based on the number of beams in the beam set and the reference power limiting information.

[0167] In some implementations, determining power limitation information includes: determining reference power limitation information for the terminal device; and determining power limitation information for the beam based on the reference power limitation information and the scaling factor of the beams in the beam set.

[0168] In some implementations, determining power limiting information includes: determining power limiting information dedicated to simultaneous transmission across panels as power limiting information for beam sets.

[0169] In some implementations, determining power limitation information includes: determining reference power limitation information for the terminal device; and determining the reference power limitation information as power limitation information for beams in the beam set.

[0170] In some implementations, the method further includes sending to the network device information about the terminal device's capabilities including at least one of the following: information about whether the terminal device supports power limiting information for beams; information about whether the terminal device supports power limiting information dedicated to simultaneous transmission across panels; information about whether the terminal device supports the same power limiting information for simultaneous transmission across panels and transmission across a single panel; information about whether the terminal device supports channel state information reporting including power limiting information; information about whether the terminal device supports reporting power limiting information associated with a set of probe reference signal resource indicators; information about whether the terminal device supports reporting power limiting information associated with a set of transmission configuration indicator states; or information about whether the terminal device supports power clearance reporting including power limiting information.

[0171] In some implementations, the method further includes sending power limiting information to network devices.

[0172] In some implementations, transmitting power limiting information includes at least one of the following: transmitting the terminal device's capability to include power limiting information; transmitting a group-based beam report including power limiting information associated with a beam set or beams in a beam set; transmitting a panel information report including power limiting information associated with a panel or a beam of a panel; transmitting power limiting information associated with a set of probe reference signal resource indicators; transmitting power limiting information not associated with another set of probe reference signal resource indicators; transmitting power limiting information associated with a set of transmission configuration indicator states; transmitting power limiting information not associated with another set of transmission configuration indicator states; or transmitting a power clearance report including power limiting information.

[0173] In some implementations, sending a power clearance report includes sending a power clearance report, including power limitation information, based on determining that conditions for triggering a power clearance report are met for at least one beam in the beam set.

[0174] In some implementations, the power limiting information indicates at least one of the following: maximum output power; maximum power reduction; or maximum permissible transmission.

[0175] Generally, various embodiments of this disclosure can be implemented in hardware or special-purpose circuitry, software, logic, or any combination thereof. Some aspects can be implemented in hardware, while others can be implemented in firmware or software executable by a controller, microprocessor, or other computing device. Although various aspects of embodiments of this disclosure are illustrated and described using block diagrams, flowcharts, or other illustrations, it should be understood that, as non-limiting examples, the blocks, apparatuses, systems, techniques, or methods described herein can be implemented in hardware, software, firmware, special-purpose circuitry or logic, general-purpose hardware or controllers or other computing devices, or any combination thereof.

[0176] This disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product includes computer-executable instructions (such as those included in program modules) that execute on a target real or virtual processor in a device to perform the functions described above. Figures 1A to 5 The described process or method. Generally, a program module includes routines, programs, libraries, objects, classes, components, data structures, etc., that perform specific tasks or implement specific abstract data types. The functionality of a program module can be combined in various implementation schemes or split among program modules as needed. The machine-executable instructions used for a program module can be executed on a local or distributed device. In a distributed device, a program module can reside on both local and remote storage media.

[0177] Program code used to perform the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that, when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a stand-alone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0178] The aforementioned program code may be embodied on a machine-readable medium, which may be any tangible medium containing or storing a program used by or in connection with an instruction execution system, apparatus, or device. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media may include, but are not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. More specific examples of machine-readable storage media will include electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0179] Furthermore, although the operations are described in a specific order, this should not be construed as requiring such operations to be performed in the specific order shown or in sequential order, or to perform all the illustrated operations to achieve the desired result. In some environments, multitasking and parallel processing can be advantageous. While several specific implementation details are included in the foregoing discussion, these details should not be construed as limiting the scope of this disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features described in the context of individual embodiments may also be implemented in a single embodiment in combination. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments. Although this disclosure has been described using language specific to structural features and / or methodological actions, it should be understood that the disclosure as defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are disclosed as examples of implementing the claims.

Claims

1. A terminal device, the terminal device comprising: a processor configured to cause the terminal device to: determine a set of beams for simultaneous transmission across panels; determine power limitation information for the simultaneous transmission across the panels based on information of the set of beams; and perform the simultaneous transmission across the panels based on the power limitation information.

2. The terminal device of claim 1, wherein, the information of the set of beams comprises at least one of: directions of beams in the set of beams; gains of beams in the set of beams; or widths of beams in the set of beams.

3. The terminal device of claim 1, wherein, the set of beams comprises a first beam and a second beam, and the processor is configured to cause the terminal device to determine the power limitation information by: determining first power limitation information for the first beam; and determining second power limitation information for the second beam.

4. The terminal device of claim 1, wherein, the processor is configured to cause the terminal device to determine the power limitation information by: determining reference power limitation information for the terminal device; and determining the power limitation information for beams in the set of beams based on a number of beams in the set of beams and the reference power limitation information.

5. The terminal device of claim 1, wherein, the processor is configured to cause the terminal device to determine the power limitation information by: determining reference power limitation information for the terminal device; and determining the power limitation information for beams in the set of beams based on the reference power limitation information and scaling factors of beams in the set of beams.

6. The terminal device of claim 1, wherein, the processor is configured to cause the terminal device to determine the power limitation information by: determining power limitation information dedicated for the simultaneous transmission across the panels as the power limitation information for the set of beams.

7. The terminal device of claim 1, wherein, the processor is configured to cause the terminal device to determine the power limitation information by: determining reference power limitation information for the terminal device; and determining the reference power limitation information as the power limitation information for beams in the set of beams.

8. The terminal device of claim 1, wherein, the processor is further configured to cause the terminal device to: transmit, to a network device, a capability of the terminal device comprising at least one of: information on whether the terminal device supports power limitation information for beams; information on whether the terminal device supports power limitation information dedicated for the simultaneous transmission across the panels; information on whether the terminal device supports same power limitation information for the simultaneous transmission across the panels and transmission across a single panel; information on whether the terminal device supports channel state information report comprising the power limitation information; information on whether the terminal device supports reporting of the power limitation information associated with a set of sounding reference signal resource indicators; information on whether the terminal device supports reporting of the power limitation information associated with a set of transmission configuration indicator states; or information on whether the terminal device supports power headroom report comprising the power limitation information. the processor is further configured to cause the terminal device to:

9. The terminal device of claim 1, wherein, transmit, to a network device, the power limitation information. the processor is configured to cause the terminal device to transmit the power limitation information by at least one of:

10. The terminal device of claim 9, wherein, ​ transmitting, by the terminal device, a capability of the terminal device including the power limitation information; transmitting a group-based beam report including the power limitation information associated with the set of beams or a beam in the set of beams; transmitting a panel information report including the power limitation information associated with the panel or a beam of the panel; transmitting the power limitation information associated with a set of sounding reference signal resource indicators; transmitting the power limitation information unassociated with another set of sounding reference signal resource indicators; transmitting the power limitation information associated with a set of transmission configuration indicator states; transmitting the power limitation information unassociated with another set of transmission configuration indicator states; or transmitting a power headroom report including the power limitation information.

11. The terminal device of claim 10, wherein, causing the terminal device to transmit the power headroom report by: transmitting the power headroom report including the power limitation information in accordance with a determination that a condition for triggering the power headroom report is satisfied for at least one beam in the set of beams.

12. The terminal device of claim 1, wherein, the power limitation information indicates at least one of: a maximum output power; a maximum power reduction; or a maximum allowed emission.

13. A method of communication, the method comprising: determining, at a terminal device, a set of beams for simultaneous transmission across panels; determining, based on information of the set of beams, power limitation information for the simultaneous transmission across the panels; and performing the simultaneous transmission across the panels based on the power limitation information. determining the power limitation information includes:

14. The method of claim 13, wherein, determining reference power limitation information for the terminal device; and determining the power limitation information for a beam in the set of beams based on a number of beams in the set of beams and the reference power limitation information. determining the power limitation information includes:

15. The method of claim 13, wherein, determining reference power limitation information for the terminal device; and determining the power limitation information for a beam based on the reference power limitation information and a scaling factor for the beam in the set of beams. determining the power limitation information includes:

16. The method of claim 13, wherein, determining power limitation information dedicated for the simultaneous transmission across the panels as the power limitation information for the set of beams. determining the power limitation information includes:

17. The method of claim 13, wherein, determining reference power limitation information for the terminal device; and determining the reference power limitation information as the power limitation information for a beam in the set of beams.

18. The method of claim 13, further comprising: transmitting, to a network device, a capability of the terminal device including at least one of: information about whether the terminal device supports power limitation information for a beam; information about whether the terminal device supports power limitation information dedicated for the simultaneous transmission across the panels; information about whether the terminal device supports a same power limitation information for the simultaneous transmission across the panels and a transmission across a single panel; information about whether the terminal device supports a channel state information report including the power limitation information; ​ information about whether the terminal device supports reporting of the power limitation information associated with a set of sounding reference signal resource indicators; information about whether the terminal device supports reporting of the power limitation information associated with a set of transmission configuration indicator states; or information about whether the terminal device supports a power headroom report including the power limitation information.

19. The method of claim 13, the method further comprising: transmitting, to a network device, the power limitation information.

20. The method of claim 19, wherein, transmitting the power limitation information comprises at least one of: transmitting a capability of the terminal device including the power limitation information; transmitting a group-based beam report including the power limitation information associated with the set of beams or a beam in the set of beams; transmitting a panel information report including the power limitation information associated with the panel or a beam of the panel; transmitting the power limitation information associated with a set of sounding reference signal resource indicators; transmitting the power limitation information unassociated with another set of sounding reference signal resource indicators; transmitting the power limitation information associated with a set of transmission configuration indicator states; transmitting the power limitation information unassociated with another set of transmission configuration indicator states; or transmitting a power headroom report including the power limitation information.

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