Power headroom estimation for multi-panel simultaneous uplink transmission and related device

Abstract

The invention provides a power headroom (PH) estimation method for simultaneous uplink (UL) transmission of a plurality of panels, and a related device. In one embodiment, the method is performed by a user equipment (UE), including: a panel specific maximum power configured to have a plurality of different panels; the PH can be the UE special PH, namely, the sum of the panel special maximum power of each panel minus the panel special scheduling power of uplink transmission of each panel, or the PH can be the panel special PH of a certain panel, namely, the panel special maximum power of the panel minus the panel special scheduling power of UL transmission of the panel. By this method, power headroom reporting for multiple panels that perform simultaneous UL transmissions in the UE may be implemented. In addition, the UE may also compute a UE-specific PH or a panel-specific PH for other configurations, such as where the UE is configured to have a UE-specific maximum power.

Description

Technical Field

[0001] The present invention relates to wireless communication technology, and more specifically, to a power headroom estimation method for simultaneous uplink transmission of multiple panels performed by a user equipment (UE) in a network, a power headroom reception method for simultaneous uplink transmission of multiple panels performed by a transmission-reception point (TRP) in the network, and related devices, such as UE and TRP. Background Art

[0002] Wireless communication systems, such as third-generation (3G) mobile phone standards and technologies, are well known. These 3G standards and technologies were developed by the Third Generation Partnership Project (3GPP). Third-generation wireless communications were generally developed to support macrocellular mobile phone communications. Communication systems and networks have been moving towards broadband and mobility. In a cellular wireless communication system, user equipment is connected to a radio access network (RAN) via a wireless link. The RAN consists of a group of base stations (BSs), which provide wireless links to UEs located within the cells covered by the base stations and interface with the core network (CN), which provides overall control of the entire network. The RAN and CN each perform their respective functions within the overall network.

[0003] 3GPP has developed the so-called Long-Term Evolution (LTE) system, also known as the Evolved Universal Mobile Telecommunication System Territorial Radio Access Network (E-UTRAN), for mobile access networks, in which one or more macro cells are supported by base stations called eNodeBs or eNBs (evolved Node Bs). More recently, LTE has evolved further into the so-called 5G or New Radio (NR) system, in which one or more cells are supported by base stations called next-generation NodeBs (gNodeBs) (gNBs).

[0004] The 5G New Radio (NR) standard will support a variety of services with very different requirements. These services include enhanced mobile broadband (eMBB) for high data rate transmission, ultra-reliable low latency communication (URLLC) for devices requiring low latency and high link reliability, and massive machine-type communication (mMTC) to support large numbers of low-power devices that require energy-efficient communication for long lifecycles.

[0005] Multiple-input, multiple-output (MIMO) is an effective method for increasing wireless link capacity by reusing antennas at both the transmitter and receiver ends. MIMO refers to a practical technique for simultaneously sending and receiving multiple data signals over the same wireless channel, significantly improving spectral efficiency. The following briefly summarizes the progress made in efficiently implementing multiple TRP transmission, a key MIMO technology.

[0006] MIMO is one of the key technologies in NR systems and has been successfully deployed commercially. In a MIMO communication system, both the UE and the base station contain a large number of antenna units. Especially for the UE, these antenna units can be distributed on different panels, such as Figure 1 Each panel is placed in a different position to allow the UE to better communicate with the base station.

[0007] Power headroom reporting is necessary to support power-aware packet scheduling. In NR, two types of reports are supported: the first (Type 1) is used for physical uplink shared channel (PUSCH) transmissions, and the second (Type 3) is used for sounding reference signal (SRS) transmissions. There is no Type 2 PH report in NR because simultaneous transmission of PUSCH and physical uplink control channel (PUCCH) is not allowed in NR. In LTE, Type 2 PH reports are used for both PUSCH and PUCCH transmissions.

[0008] If the UE determines that the Type 1 PH report for an activated serving cell is based on an actual PUSCH transmission, the UE shall calculate the actual PH report as the UE's maximum power minus the scheduled power of the actual PUSCH transmission. If the UE determines that the Type 1 PH report for an activated serving cell is based on a reference PUSCH transmission, the UE shall calculate the virtual PH report as the UE's maximum power minus the scheduled power of the reference PUSCH transmission.

[0009] The PH is reported via medium access control (MAC) signaling. This MAC signaling also includes the UE's maximum power and the UE's power management maximum power reduction (P-MPR). The P-MPR indicates how much the maximum power needs to be reduced to meet the FR2 maximum permissible exposure (MPE) regulations, which limit human exposure to radio frequency (RF).

[0010] In the current 3GPP specification, although the UE may have one or more panels, the UE can only perform uplink transmission on the carrier of one serving cell by one panel at a time. For uplink transmission, the UE will be configured with a maximum power and the scheduling power of the uplink transmission will be calculated based on scheduling parameters such as P0, alpha, closed-loop index, path loss, number of physical resource blocks (PRBs), etc. For PH, the UE only needs to calculate the PH of the uplink transmission on the panel. It should be noted that in a single TRP scenario, the UE reports one PH; in a multi-TRP scenario, the UE reports two PHs. At the same time, the UE only needs to report one maximum power and one P-MPR.

[0011] The 3GPP Release 18 Work Item Description (WID) introduced the concept of multiple panels in a UE performing simultaneous UL transmissions. Two issues needed to be addressed: the first involved the calculation of the PH; the second involved the reporting of PH, maximum power, and P-MPR. Summary of the Invention

[0012] The purpose of the present invention is to provide a power headroom estimation method for simultaneous uplink transmission of multiple panels performed by user equipment in a network, a power headroom reception method for simultaneous uplink transmission of multiple panels performed by a transceiver point in a network, and related equipment, so as to solve the problems in the prior art, realize power headroom reporting when multiple panels perform uplink transmission simultaneously, or provide good communication performance.

[0013] In a first aspect, an embodiment of the present invention provides a power headroom estimation method for simultaneous uplink transmission of multiple panels, which is performed by a user equipment in a network, the method comprising: being configured to have a panel-specific maximum power of multiple different panels; and calculating the power headroom, wherein the PH can be a UE-specific PH, i.e., the sum of the panel-specific maximum powers of each panel minus the sum of the panel-specific scheduling powers of the uplink transmission of each panel, or the PH is a panel-specific PH of a certain panel, i.e., the panel-specific maximum power of the panel minus the panel-specific scheduling power of the UL transmission of the panel.

[0014] In a second aspect, an embodiment of the present invention provides a power headroom estimation method for simultaneous uplink transmission of multiple panels, which is performed by a user equipment in a network, the method comprising: being configured to have a UE-specific maximum power; and calculating the power headroom, wherein the PH can be a UE-specific PH, i.e., the UE-specific maximum power minus the sum of the panel-specific scheduling powers of the uplink transmissions of each panel, or the PH is a panel-specific PH of a certain panel, i.e., the UE-specific maximum power minus the panel-specific scheduling power of the UL transmission of the panel.

[0015] In a third aspect, an embodiment of the present invention provides a method for receiving power headroom for simultaneous uplink transmission of multiple panels, which is executed by a transceiver point in a network, the method comprising: receiving a power headroom reported by a user equipment based on panel-specific maximum powers of multiple different panels, wherein the PH may be a UE-specific PH, i.e., the sum of the panel-specific maximum powers of each panel minus the sum of the panel-specific scheduling powers for uplink transmission of each panel, or the PH is a panel-specific PH of a certain panel, i.e., the panel-specific maximum power of the panel minus the panel-specific scheduling power for UL transmission of the panel.

[0016] In a fourth aspect, an embodiment of the present invention provides a method for receiving power headroom for simultaneous uplink transmission of multiple panels, which is executed by a transceiver point in the network, the method comprising: receiving a power headroom reported by a user equipment based on a UE-specific maximum power, wherein the PH may be a UE-specific PH, i.e., the UE-specific maximum power minus the sum of the panel-specific scheduling powers for uplink transmission of each panel, or the PH is a panel-specific PH of a certain panel, i.e., the UE-specific maximum power minus the panel-specific scheduling power for UL transmission of the panel.

[0017] In a fifth aspect, an embodiment of the present invention provides a power headroom reporting method for simultaneous uplink transmission of multiple panels, which is executed by a user equipment in a network, the method comprising: being configured to have a panel-specific maximum power of multiple different panels; and reporting a UE-specific PH or a panel-specific PH of multiple different panels to the network, wherein the UE-specific PH is the sum of the panel-specific maximum powers of each panel minus the sum of the panel-specific scheduling powers of the uplink transmission of each panel, or the panel-specific PH is the panel-specific maximum power of the panel minus the panel-specific scheduling power of the UL transmission of the panel.

[0018] In the sixth aspect, an embodiment of the present invention provides a power headroom reporting method for simultaneous uplink transmission of multiple panels, which is executed by a user equipment in the network, the method comprising: being configured to have a UE-specific maximum power; and reporting to the network a UE-specific PH or panel-specific PHs of multiple different panels, wherein the UE-specific PH is the UE-specific maximum power minus the sum of the panel-specific scheduling powers of the uplink transmissions of each panel, or the panel-specific PH is the UE-specific maximum power minus the panel-specific scheduling power of the UL transmission of the panel.

[0019] In a seventh aspect, an embodiment of the present invention provides a UE, comprising a processor and a transmitter, wherein the processor is configured to call and run program instructions stored in a memory to execute any one of the methods of the first and second aspects.

[0020] In an eighth aspect, an embodiment of the present invention provides a TRP comprising a processor and a transmitter, wherein the processor is configured to call and run program instructions stored in a memory to execute any one of the methods of the third and fourth aspects.

[0021] In a ninth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing a computer program, enabling a computer to execute any one of the methods of the first to fourth aspects.

[0022] In a tenth aspect, an embodiment of the present invention provides a computer program product comprising computer program instructions, enabling a computer to execute any one of the methods of the first to fourth aspects.

[0023] In an eleventh aspect, an embodiment of the present invention provides a computer program which, when executed on a computer, enables the computer to execute any one of the methods of the first to fourth aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or related technologies, the following briefly introduces the drawings that will be described in the embodiments. Obviously, these drawings are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without inventive work.

[0025] Figure 1 is a diagram schematically showing a multi-TRP scenario.

[0026] Figure 2 FIG. 4 is a block diagram of a communication network system according to an embodiment of the present invention.

[0027] Figure 3 It is a diagram schematically showing the wireless protocol architecture within the TRP (or gNB) and the UE.

[0028] Figure 4 The figure schematically shows that the gNB further includes a centralized unit (CU) and multiple distributed units (DU).

[0029] Figure 5 FIG. 4 is a flow chart of a method for estimating power headroom for simultaneous uplink transmission of multiple panels according to a first embodiment of the present invention.

[0030] Figure 6 FIG. 4 is a flow chart of a method for estimating power headroom for simultaneous uplink transmission of multiple panels according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0031] The embodiments of the present invention will be described in detail with reference to the technical content, structural features, implementation objectives and effects thereof in conjunction with the accompanying drawings. It should be noted that the terms in the embodiments of the present invention are only used for the purpose of describing specific embodiments and should not be regarded as limiting the present invention.

[0032] In this document, the term " / " should be understood to mean "and / or". Combinations such as "at least one A, B, or C", "one or more A, B, or C", "at least one A, B and C", "one or more A, B, and C", or "A, B and / or C" may mean only A, only B, only C, A and B, A and C, B and C, or A, B and C, where any combination may include one or more members of A, B, or C.

[0033] The present invention relates to wireless communication systems operating in a multiple-input, multiple-output (MIMO) system. More specifically, it aims to provide solutions for calculating and reporting power headroom, maximum power, and power management maximum power reduction for simultaneous uplink transmissions from multiple panels in a user equipment (UE). Furthermore, related transceiver points or base stations (e.g., gNBs) are also provided.

[0034] For power headroom calculation, the UE may calculate a UE-specific PH or a panel-specific PH according to different configurations. For PH, maximum power, and P-MPR reporting, the UE may report a UE-specific PH, maximum power, and P-MPR, or a panel-specific PH, maximum power, and P-MPR, or any combination thereof according to different configurations.

[0035] The present invention can be summarized as follows, but is not limited thereto:

[0036] 1. A calculation method for UE-specific PH or panel-specific PH with different configurations is proposed.

[0037] 2. A reporting method for UE-specific PH, maximum power and P-MPR, or panel-specific PH, maximum power and P-MPR, or any combination thereof, for different configurations is proposed.

[0038] 3. Different Media Access Control Element (MAC CE) are designed to meet different reporting requirements.

[0039] Figure 2The present invention illustrates, in certain embodiments, one or more user equipment (UEs) 10, a first transceiver point (TRP) 20, and a second TRP 30 for wireless communication in a communication network system according to an embodiment of the present invention. The communication network system includes one or more UEs 10, a first TRP 20, and a second TRP 30. The one or more UEs 10 may include a memory 12, a transceiver 13, and a processor 11 connected to the memory 12 and the transceiver 13. The first TRP 20 may include a memory 22, a transceiver 23, and a processor 21 connected to the memory 22 and the transceiver 23. The second TRP 30 may include a memory 32, a transceiver 33, and a processor 31 connected to the memory 32 and the transceiver 33. The processors 11, 21, or 31 may be configured to implement the functions, processes, and / or methods described herein. The various layers of the radio interface protocol may be implemented in the processors 11, 21, or 31. The memories 12, 22, or 32 are operatively connected to the processors 11, 21, or 31 to store various information for execution by the processors 11, 21, or 31. The transceiver 13, 23 or 33 is operatively connected to the processor 11, 21 or 31, and the transceiver 13, 23 or 33 is used to send and / or receive wireless signals. The first TRP 20 (and the second TRP 30) can also communicate with the next generation core network (5GCN) in a wireless or wired manner. When the communication network system complies with the New Radio (NR) standard of the 3rd Generation Partnership Project (3GPP), the next generation core network is a backend service network system and may include an Access and Mobility Management Function (AMF), a User Plane Function (UPF), and a Session Management Function (SMF). In one aspect, the user equipment may include almost any consumer electronic device or home device that can be connected to a wireless access network and a core network, for 3GPP release versions and higher, such as but not limited to NR networks.

[0040] The processor 11, 21 or 31 may include an application-specific integrated circuit (ASIC), other chipsets, logic circuits and / or data processing devices. The memory 12, 22 or 32 may include a read-only memory (ROM), a random access memory (RAM), flash memory, a memory card, a storage medium and / or other storage devices. The transceiver 13, 23 or 33 may include a baseband circuit for processing radio frequency signals. When the various embodiments are implemented in software, the technology described herein may be implemented by modules (such as procedures, functions, etc.) that perform related functions. These modules may be stored in the memory 12, 22 or 32 and executed by the processor 11, 21 or 31. The memory 12, 22 or 32 may be implemented within the processor 11, 21 or 31, or may be implemented independently of the processor 11, 21 or 31. In this case, they may be communicatively connected to the processor 11, 21 or 31 in various ways known in the art. Figure 3 The user plane radio protocol architecture within the TRP (or gNB) and UE is shown, including the optional Service Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), and Media Access Control. In the RAN functional split, such as Figure 4 As shown in Figure 1, the gNB further consists of a centralized unit (CU) and multiple distributed units (DUs). The CU's protocol stack includes the RRC layer, optional SDAP layer, and PDCP layer, while the DU's protocol stack includes the RLC layer, MAC layer, and physical (PHY) layer. The F1 interface between the CU and DU is established between the PDCP layer and the RLC layer.

[0041] Figure 5 FIG1 is a flow chart of a method for estimating power headroom for simultaneous uplink transmission of multiple panels according to a first embodiment of the present invention. Figure 5 and Figure 2, method 100 is performed by a user equipment, and includes the following steps: in step 110, the UE is configured to have panel-specific maximum powers for multiple different panels. The panel-specific maximum power is a specific maximum power for each panel. The configuration can be pre-configured or self-contained. In step 120, based on the configuration, the UE calculates the power headroom. The power headroom represents the remaining transmission power that the UE can use in addition to the power used for current transmission. Specifically, the PH can be a UE-specific PH, that is, the sum of the panel-specific maximum powers of each panel minus the sum of the panel-specific scheduling powers for uplink transmission of each panel; or the PH can be a panel-specific PH for a certain panel, that is, the panel-specific maximum power of the panel minus the panel-specific scheduling power for UL transmission on the panel. After the PH calculation is completed, the UE can perform a power headroom report to the transceiver point or base station. Through this method, power headroom reporting for simultaneous uplink transmission of multiple panels in the UE can be achieved.

[0042] Figure 6 FIG2 is a flow chart of a method for estimating power headroom for simultaneous uplink transmission of multiple panels according to a second embodiment of the present invention. Figure 6 and Figure 2 , method 200 is performed by a user equipment, and includes the following steps: in step 210, the UE is configured to have a UE-specific maximum power. The UE-specific maximum power is a specific maximum power for the UE. The configuration can be pre-configured or self-contained. In step 220, based on the configuration, the UE calculates the power headroom. The power headroom represents the remaining transmission power that the UE can use in addition to the power used for the current transmission. Specifically, the PH can be a UE-specific PH, that is, the UE-specific maximum power minus the sum of the panel-specific scheduling powers for uplink transmission of each panel; or the PH can be a panel-specific PH for a certain panel, that is, the UE-specific maximum power minus the panel-specific scheduling power for UL transmission on the panel. After the PH calculation is completed, the UE can perform a power headroom report to the transceiver point (or base station). Through this method, power headroom reporting for simultaneous uplink transmission of multiple panels in the UE can be achieved.

[0043] In a first aspect of the present invention, a method for calculating a UE-specific power headroom (PH) or a panel-specific PH is proposed.

[0044] Configuration 1: The UE is configured with panel-specific maximum powers for multiple (eg, two) different panels.

[0045] The actual UE-specific PH of a UE is calculated based on the actual uplink transmissions on the panel. The actual UE-specific PH calculated by the UE is the sum of the panel-specific maximum powers of each panel minus the sum of the panel-specific scheduled powers of the actual UL transmissions. The panel-specific scheduled power of the actual UL transmission is calculated based on the scheduling parameters of the actual UL transmission, such as target power, number of RBs, path loss compensation factor, path loss, power offset, closed-loop control adjustments, etc. The virtual UE-specific PH of a panel is calculated based on the reference UL transmission on that panel. The virtual UE-specific PH calculated by the UE is the sum of the virtual panel-specific maximum powers of each panel minus the sum of the panel-specific scheduled powers of the reference UL transmission. The virtual panel-specific maximum power of a panel is calculated assuming that all types of Maximum Power Reduction (MPR) are zero. The panel-specific scheduled power of the reference UL transmission is calculated based on the scheduling parameters of the reference UL transmission, such as target power, path loss compensation factor, path loss, closed-loop control adjustments, etc.

[0046] The actual panel-specific PH for a panel is calculated based on the actual uplink transmission on the panel. The actual panel-specific PH calculated by the UE is the panel-specific maximum power of the panel minus the panel-specific scheduled power of the actual UL transmission. The panel-specific scheduled power of the actual UL transmission is calculated based on the scheduling parameters of the actual UL transmission, such as target power, number of RBs, path loss compensation factor, path loss, power offset, closed-loop control adjustment, etc. The virtual panel-specific PH for a panel is calculated based on the reference UL transmission on the panel. The virtual panel-specific PH calculated by the UE is the virtual panel-specific maximum power of the panel minus the panel-specific scheduled power of the reference UL transmission. The virtual panel-specific maximum power for a panel is calculated assuming that the maximum power of each type is reduced to zero. The panel-specific scheduled power of the reference UL transmission is calculated based on the scheduling parameters of the reference UL transmission, such as target power, path loss compensation factor, path loss, closed-loop control adjustment, etc.

[0047] Configuration 2: The UE is configured with a UE-specific maximum power.

[0048] The actual UE-specific PH of the UE is calculated based on the actual UL transmissions on each panel. The actual UE-specific PH calculated by the UE is the UE-specific maximum power minus the sum of the panel-specific scheduled powers for the actual UL transmissions of each panel. The panel-specific scheduled power for the actual UL transmissions is calculated based on the scheduling parameters of the actual UL transmissions, such as target power, number of RBs, path loss compensation factor, path loss, power offset, closed-loop control adjustments, etc. The virtual UE-specific PH of the UE is calculated based on the reference UL transmissions on each panel. The virtual UE-specific PH calculated by the UE is the virtual UE-specific maximum power minus the sum of the panel-specific scheduled powers for the reference UL transmissions of each panel. The virtual UE-specific maximum power is calculated assuming that the maximum power reductions of various types are zero. The panel-specific scheduled power for the reference UL transmissions is calculated based on the scheduling parameters of the reference UL transmissions, such as target power, path loss compensation factor, path loss, closed-loop control adjustments, etc.

[0049] The actual panel-specific PH of the UE is calculated based on the actual UL transmission on the panel. The actual panel-specific PH calculated by the UE is the UE-specific maximum power minus the panel-specific scheduling power of the actual UL transmission. The panel-specific scheduling power of the actual UL transmission is calculated based on the scheduling parameters of the actual UL transmission, such as target power, number of RBs, path loss compensation factor, path loss, power offset, closed-loop control adjustment, etc. The virtual panel-specific PH of the UE is calculated based on the reference UL transmission on each panel. The virtual panel-specific PH calculated by the UE is the virtual UE-specific maximum power minus the panel-specific scheduling power of the reference UL transmission. The virtual UE-specific maximum power is calculated assuming that the MPR of each type is zero. The panel-specific scheduling power of the reference UL transmission is calculated based on the scheduling parameters of the reference UL transmission, such as target power, path loss compensation factor, path loss, closed-loop control adjustment, etc.

[0050] In a second aspect of the present invention, it is proposed how to report a UE-specific PH or a panel-specific PH.

[0051] Configuration 1: The UE is configured with panel-specific maximum power for multiple panels.

[0052] In a first alternative embodiment, one UE-specific PH is reported to the network. For example, only one actual UE-specific PH based on actual UL transmission is reported to the network, or only one virtual UE-specific PH based on reference UL transmission is reported to the network.

[0053] In a second alternative embodiment, the panel-specific PHs of multiple (eg, two) different panels are reported to the network. The reported panel-specific PHs may be actual panel-specific PHs, virtual panel-specific PHs, or a combination thereof.

[0054] Configuration 2: The UE is configured with a UE-specific maximum power.

[0055] In a first alternative embodiment, one UE-specific PH is reported to the network. For example, only one actual UE-specific PH based on actual UL transmission is reported to the network, or only one virtual UE-specific PH based on reference UL transmission is reported to the network.

[0056] In a second alternative embodiment, the panel-specific PHs of multiple (eg, two) different panels are reported to the network. The reported panel-specific PHs may be actual panel-specific PHs, virtual panel-specific PHs, or a combination thereof.

[0057] In a third aspect of the present invention, it is proposed how to report a UE-specific P-MPR or a panel-specific P-MPR.

[0058] Configuration 1: The UE is configured with panel-specific maximum powers for multiple (eg, two) different panels.

[0059] In a first alternative embodiment, a UE-specific P-MPR is reported to the network, so that the network knows that the actual transmission power of the UE cannot exceed the sum of the panel-specific maximum powers of different panels minus the UE-specific P-MPR.

[0060] In a second alternative embodiment, a panel-specific P-MPR for a certain panel is reported to the network. The panel-specific P-MPRs of other panels are not reported. The network can know that the actual transmission power of the panel cannot exceed the panel-specific maximum power of the panel minus the panel-specific P-MPR of the panel, and the actual transmission power of other panels cannot exceed their respective panel-specific maximum powers. For example, the UE has two panels, such as Panel-1 and Panel-2. If the panel-specific P-MPR of Panel-1 is reported, the network knows that the panel-specific maximum power of Panel-1 minus the panel-specific P-MPR of Panel-1 is the power remaining available for transmission on Panel-1.

[0061] In a third alternative embodiment, the panel-specific P-MPRs of multiple (e.g., two) different panels are reported to the network. The network can know that the actual transmission power of each panel cannot exceed its panel-specific maximum power minus its panel-specific P-MPR. For example, for three panels, such as Panel-1, Panel-2, and Panel-3. If the panel-specific P-MPRs of Panel-1 and Panel-2 are reported, the network knows that the panel-specific maximum power of Panel-1 minus the panel-specific P-MPR of Panel-1 is the power remaining available for transmission on Panel-1, and the panel-specific maximum power of Panel-2 minus the panel-specific P-MPR of Panel-2 is the power remaining available for transmission on Panel-2.

[0062] Configuration 2: The UE is configured with a UE-specific maximum power.

[0063] In a first alternative embodiment, a UE-specific P-MPR is reported to the network, so that the network knows that the actual transmission power of the UE cannot exceed the UE-specific maximum power minus the UE-specific P-MPR.

[0064] In a second alternative embodiment, a panel-specific P-MPR for a certain panel is reported to the network. The panel-specific P-MPRs of other panels are not reported. The network can know that the actual transmission power of the UE cannot exceed the UE-specific maximum power minus the panel-specific P-MPR of the panel. If the power overflows, the UE will reduce the power of the panel but not the power of other panels. For example, the UE has two panels, such as Panel-1 and Panel-2. If the panel-specific P-MPR of Panel-1 is reported, the network knows that the UE-specific maximum power minus the panel-specific P-MPR of Panel-1 is the power remaining for the UE to transmit.

[0065] In a third alternative embodiment, the panel-specific P-MPRs of multiple (e.g., two) panels are reported to the network. The network can know that the actual transmission power of the UE cannot exceed the UE-specific maximum power minus the sum of the panel-specific P-MPRs of the different panels. For example, for three panels, such as Panel-1, Panel-2, and Panel-3. If the panel-specific P-MPRs of Panel-1 and Panel-2 are reported, the network knows that the UE-specific maximum power minus the sum of the panel-specific P-MPRs of Panel-1 and Panel-2 is the power remaining for the UE to transmit.

[0066] In a fourth aspect of the present invention, it is proposed how to report a UE-specific maximum power or a panel-specific maximum power.

[0067] Configuration 1: The UE is configured with panel-specific maximum powers for multiple (eg, two) different panels.

[0068] In a first alternative embodiment, a UE-specific maximum power is reported to the network. The UE-specific maximum power is equal to the sum of the panel-specific maximum powers of different panels.

[0069] In a second alternative embodiment, the panel-specific maximum powers of multiple (e.g., two) different panels are reported to the network. If the panel-specific maximum powers of different panels are equal, only one of them can be reported. If all panel-specific maximum powers associated with a UE are reported, the network can derive the UE-specific maximum power by summing these panel-specific maximum powers. Furthermore, the panel-specific maximum power can be an actual panel-specific maximum power based on an actual UL transmission, or a virtual panel-specific maximum power based on a reference UL transmission.

[0070] Configuration 2: The UE is configured with a UE-specific maximum power.

[0071] In a first alternative embodiment, a UE-specific maximum power is reported to the network.

[0072] In a second alternative embodiment, a panel-specific maximum power for a panel is reported to the network. The panel-specific maximum power may be a portion of the UE-specific maximum power. Furthermore, the panel-specific maximum power may be an actual panel-specific maximum power based on actual UL transmissions, or a virtual panel-specific maximum power based on a reference UL transmission.

[0073] In a fifth aspect of the present invention, a design of MAC CE is proposed.

[0074] The MAC CE contains at least one of the following:

[0075] UE-specific maximum power or panel-specific maximum power.

[0076] UE-specific PH or panel-specific PH.

[0077] PH type indication, used to indicate whether the PH is real or virtual.

[0078] UE-specific P-MPR or panel-specific P-MPR.

[0079] P-MPR indication, used to indicate whether P-MPR is enabled.

[0080] The following shows an example of MAC CE mode. UE or PH paneli Respectively represent the UE-specific PH of UE or the panel-specific PH of panel i. cmax,UE or P cmax,paneliRepresents the UE-specific maximum power of the UE or the panel-specific maximum power of panel i respectively. UE or P-MPR paneli Respectively represents the UE-specific P-MPR of the UE or the panel-specific P-MPR of panel i. V indicates whether the corresponding PH is real or virtual. P indicates whether P-MPR is enabled.

[0081] First alternative embodiment:

[0082]

[0083] Second alternative embodiment:

[0084]

[0085] Third Alternative Embodiment:

[0086]

[0087] Fourth Alternative Embodiment:

[0088]

[0089] Fifth Alternative Embodiment:

[0090]

[0091] Sixth Alternative Embodiment:

[0092]

[0093] Seventh Alternative Embodiment:

[0094]

[0095]

[0096] Eighth Alternative Embodiment:

[0097]

[0098] The commercial value of certain embodiments is as follows: 1. Solve the problems in the prior art. 2. Implement the reporting of PH, maximum power and P-MPR. 3. Implement power margin reporting for simultaneous UL transmission of multiple panels. 4. Provide good communication performance. Some embodiments of the present invention can be used by 5G-NR chipset suppliers, V2X communication system developers, automobile manufacturers (including cars, trains, trucks, buses, bicycles, motorcycles, helmets, etc.), drones (unmanned aerial vehicles), smartphone manufacturers, public safety communication equipment manufacturers, AR / VR equipment manufacturers (for example, for games, conferences / seminars, and educational purposes). Some embodiments of the present invention are a combination of "technology / process" that can be adopted into 3GPP specifications to develop final products. Some embodiments of the present invention can also be applied to 5G NR unlicensed frequency band communications. Some embodiments of the present invention propose technical mechanisms.

[0099] Embodiments of the present invention further provide a computer-readable storage medium for storing a computer program. This computer-readable storage medium enables a computer to execute the corresponding processes of the methods implemented by a UE / base station (BS) / TRP in the embodiments of the present invention. For the sake of brevity, the specific details are not repeated herein.

[0100] An embodiment of the present invention further provides a computer program product comprising computer program instructions. The computer program product enables a computer to execute the corresponding processes implemented by the UE / BS / TRP in each method of the embodiments of the present invention. For the sake of brevity, the specific details are not repeated herein.

[0101] The embodiments of the present invention further provide a computer program. The computer program enables a computer to execute the corresponding processes implemented by the UE / BS / TRP in the various methods of the embodiments of the present invention. For the sake of brevity, the specific details are not repeated herein.

[0102] The non-transitory computer-readable medium may include at least one of the following: a hard disk, a CD-ROM, an optical storage device, a magnetic storage device, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory, and a flash memory. In some embodiments where each element is implemented in software, the software may be stored in a computer-readable medium and loaded into a computing system via, for example, a removable storage drive. When a processor in the computer system executes the control module (e.g., software instructions or executable computer program code), the processor performs the functions of the invention described herein.

[0103] Furthermore, the innovative concept can be applied to any circuit that performs signal processing functions within a network element. It is further envisioned that, for example, semiconductor manufacturers could employ the innovative concept in the design of standalone devices (e.g., microcontrollers, application-specific integrated circuits (ASICs)), digital signal processors (DSPs), and / or any other subsystem components.

[0104] Those skilled in the art will appreciate that, in conjunction with the examples described in the embodiments of this specification, the units and algorithm steps can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are implemented by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may adopt different methods to implement the functions to suit specific applications, but this should not be considered to exceed the scope of the present invention.

[0105] While the present invention has been described in connection with what is considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiment, but is intended to cover various arrangements that may be made without departing from the broadest interpretation of the appended claims.

Claims

1. A method for estimating power headroom for simultaneous uplink transmission of multiple panels, executed by a user equipment (UE) in a network, characterized in that: The method comprises: A panel-specific maximum power configured with multiple different panels; and Calculate the power margin PH, Among them, the PH is a UE-specific PH, which is the sum of the panel-specific maximum power of the panel minus the sum of the panel-specific scheduling power of the uplink UL transmission of the panel, or the PH is a panel-specific PH of a panel, which is the panel-specific maximum power of the panel minus the panel-specific scheduling power of the UL transmission of the panel.

2. The method according to claim 1, characterized in that The UE-specific PH is an actual UE-specific PH, and the actual UE-specific PH is the sum of the panel-specific maximum powers of the panel minus the sum of the panel-specific scheduling powers of actual UL transmission on the panel.

3. The method according to claim 2, characterized in that The panel-specific scheduling power of an actual UL transmission is calculated according to the scheduling parameters of the actual UL transmission.

4. The method according to claim 1, wherein The UE-specific PH is a virtual UE-specific PH, and the virtual UE-specific PH is the sum of the virtual panel-specific maximum powers of the panel minus the sum of the panel-specific scheduling powers of the reference UL transmission on the panel.

5. The method according to claim 4, characterized in that Each virtual panel-specific maximum power of a panel is calculated assuming that each type of maximum power reduction MPR is zero, and each panel-specific scheduling power of a reference UL transmission is calculated based on the scheduling parameters of the reference UL transmission.

6. The method according to claim 1, characterized in that The panel-specific PH is an actual panel-specific PH, which is the panel-specific maximum power of the panel minus the panel-specific scheduling power of the actual UL transmission on the panel, or the panel-specific PH is a virtual panel-specific PH, which is the virtual panel-specific maximum power of the panel minus the panel-specific scheduling power of the reference UL transmission on the panel.

7. The method according to claim 1, characterized in that Also includes: reporting a UE-specific PH of the UE to the network; or Panel-specific PHs for a plurality of different panels are reported to the network.

8. The method according to claim 1, characterized in that Also includes: reporting a UE-specific maximum power of the UE to the network, wherein the UE-specific maximum power is equal to the sum of panel-specific maximum powers of different panels; or The panel-specific maximum powers of the plurality of different panels are reported to the network, wherein if the panel-specific PHs of the different panels are equal, one of the panel-specific PHs is reported.

9. The method according to claim 1, characterized in that Also includes: reporting a UE-specific power management maximum power reduction P-MPR of the UE to the network; or reporting a panel-specific P-MPR of the panel to the network, wherein panel-specific P-MPRs of other panels are not reported; or The panel-specific P-MPRs of the plurality of different panels are reported to the network.

10. The method according to claim 1, characterized in that The PH is reported through media access control MAC signaling, and the related MAC control element MAC CE includes at least one of the following: The UE-specific maximum power or the panel-specific maximum power, The UE-specific PH or the panel-specific PH, PH type indication, used to indicate whether the PH is real or virtual, UE-specific P-MPR or panel-specific P-MPR, or P-MPR indication, used to indicate whether P-MPR is enabled.

11. A method for estimating power headroom for simultaneous uplink transmission of multiple panels, executed by a user equipment (UE) in a network, characterized in that: The method comprises: Configure UE-specific maximum power; and Calculate the power margin PH, The PH is a UE-specific PH, which is the UE-specific maximum power minus the sum of the panel-specific scheduling powers of the uplink UL transmission on the panel, or the PH is a panel-specific PH of a panel, and the panel-specific PH is the UE-specific maximum power minus the panel-specific scheduling power of the UL transmission on the panel.

12. The method according to claim 11, characterized in that The UE-specific PH is an actual UE-specific PH, and the actual UE-specific PH is the sum of the panel-specific maximum powers of the panel minus the sum of the panel-specific scheduling powers of actual UL transmission on the panel.

13. The method according to claim 12, characterized in that The panel-specific scheduling power of an actual UL transmission is calculated according to the scheduling parameters of the actual UL transmission.

14. The method according to claim 11, characterized in that The UE-specific PH is a virtual UE-specific PH, and the virtual UE-specific PH is the sum of the virtual panel-specific maximum powers of the panel minus the sum of the panel-specific scheduling powers of the reference UL transmission on the panel.

15. The method according to claim 14, characterized in that Each virtual panel-specific maximum power of a panel is calculated assuming that each type of maximum power reduction MPR is zero, and each panel-specific scheduling power of a reference UL transmission is calculated based on the scheduling parameters of the reference UL transmission.

16. The method according to claim 11, characterized in that The panel-specific PH is an actual panel-specific PH, which is the panel-specific maximum power of the panel minus the panel-specific scheduling power of the actual UL transmission on the panel, or the panel-specific PH is a virtual panel-specific PH, which is the virtual panel-specific maximum power of the panel minus the panel-specific scheduling power of the reference UL transmission on the panel.

17. The method according to claim 11, characterized in that Also includes: reporting a UE-specific PH of the UE to the network; or Panel-specific PHs for a plurality of different panels are reported to the network.

18. The method according to claim 11, characterized in that Also includes: reporting a UE-specific maximum power of the UE to the network; or A panel-specific maximum power of the panel is reported to the network, wherein the panel-specific maximum power is a fraction of the UE-specific maximum power.

19. The method according to claim 11, wherein Also includes: reporting a UE-specific power management maximum power reduction P-MPR of the UE to the network; or reporting a panel-specific P-MPR of the panel to the network, wherein panel-specific P-MPRs of other panels are not reported; or The panel-specific P-MPRs of the plurality of different panels are reported to the network.

20. The method according to claim 11, characterized in that The PH is reported through media access control MAC signaling, and the related MAC control element MAC CE includes at least one of the following: The UE-specific maximum power or the panel-specific maximum power, The UE-specific PH or the panel-specific PH, PH type indication, used to indicate whether the PH is real or virtual, UE-specific P-MPR or panel-specific P-MPR, or P-MPR indication, used to indicate whether P-MPR is enabled.

21. A method for receiving power headroom for simultaneous uplink transmission of multiple panels, executed by a transceiver point (TRP) in a network, characterized in that: The method comprises: receiving a power headroom PH reported by a user equipment UE based on panel-specific maximum power reports of a plurality of different panels, Among them, the PH is a UE-specific PH, which is the sum of the panel-specific maximum power of the panel minus the sum of the panel-specific scheduling power of the uplink UL transmission on the panel, or the PH is a panel-specific PH of a panel, which is the panel-specific maximum power of the panel minus the panel-specific scheduling power of the UL transmission of the panel.

22. A method for receiving power headroom for simultaneous uplink transmission of multiple panels, executed by a transceiver point (TRP) in a network, characterized in that: The method comprises: receiving a power headroom PH reported by a user equipment UE based on a UE-specific maximum power, Among them, the PH is a UE-specific PH, which is the UE-specific maximum power minus the sum of the panel-specific scheduling powers of the uplink UL transmission on the panel, or the PH is a panel-specific PH of a panel, which is the UE-specific maximum power minus the panel-specific scheduling power of the UL transmission on the panel.

23. A method for reporting power headroom for simultaneous uplink transmission of multiple panels, executed by a user equipment (UE) in a network, characterized in that: The method comprises: Panel-specific maximum power for configuring multiple different panels; and reporting a UE-specific PH or panel-specific PHs of the multiple different panels to the network, Among them, the UE-specific PH is the sum of the panel-specific maximum power of the panel minus the sum of the panel-specific scheduling power of the uplink UL transmission on the panel, or the panel-specific PH is the panel-specific maximum power of the panel minus the panel-specific scheduling power of the UL transmission on the panel.

24. The method according to claim 23, wherein The PH is reported through medium access control (MAC) signaling, and a related MAC control element MAC CE includes at least one of the following: The PH is reported through media access control MAC signaling, and the related MAC control element MAC CE includes at least one of the following: The UE-specific maximum power or the panel-specific maximum power, The UE-specific PH or the panel-specific PH, PH type indication, used to indicate whether the PH is real or virtual, UE-specific P-MPR or panel-specific P-MPR, or P-MPR indication, used to indicate whether P-MPR is enabled.

25. A method for reporting power headroom for simultaneous uplink transmission of multiple panels, executed by a user equipment (UE) in a network, characterized in that: The method comprises: Configure UE-specific maximum power; and reporting a UE-specific PH or panel-specific PHs of the multiple different panels to the network, The UE-specific PH is the sum of the UE-specific maximum power minus the panel-specific scheduling power of the uplink UL transmission on the panel, or the panel-specific PH is the UE-specific maximum power minus the panel-specific scheduling power of the UL transmission on the panel.

26. The method according to claim 25, wherein The PH is reported through medium access control (MAC) signaling, and a related MAC control element MAC CE includes at least one of the following: The PH is reported through media access control MAC signaling, and the related MAC control element MAC CE includes at least one of the following: The UE-specific maximum power or the panel-specific maximum power, The UE-specific PH or the panel-specific PH, PH type indication, used to indicate whether the PH is real or virtual, UE-specific P-MPR or panel-specific P-MPR, or P-MPR indication, used to indicate whether P-MPR is enabled.

27. A user equipment (UE), comprising a processor and a transmitter, wherein the processor is configured to call and run program instructions stored in a memory to perform the method according to any one of claims 1 to 10.

28. A user equipment (UE), comprising a processor and a transmitter, wherein the processor is configured to call and run program instructions stored in a memory to perform the method according to any one of claims 11 to 20.

29. A transceiver point (TRP), comprising a processor and a transmitter, wherein the processor is configured to call and run program instructions stored in a memory to perform the method described in claim 21.

30. A transceiver point (TRP), comprising a processor and a transmitter, wherein the processor is configured to call and run program instructions stored in a memory to perform the method of claim 22.

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