Pathloss offset determination in asymmetric heterogeneous networks
By employing pathloss estimation offsets for uplink channels in 5G NR HetNets, the method addresses performance degradation from downlink-uplink decoupling, enhancing power control efficiency and accuracy for channels like PUSCH, PUCCH, SRS, and PRACH.
Patent Information
- Application Number
- PCT/CN2024/077443
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-02-18
- Publication Date
- 2025-08-21
AI Technical Summary
In asymmetric heterogeneous networks, the decoupling of downlink and uplink serving sites in 5G NR HetNets leads to performance degradation due to inefficient pathloss estimation, particularly in open-loop power control, affecting channels like PUSCH, PUCCH, SRS, and PRACH.
The implementation of pathloss estimation using applied offsets, including pathloss reference signal power offset, higher layer filtered RSRP offset, and pathloss estimation offset, to determine uplink transmission power accurately.
Enhances the accuracy and efficiency of pathloss estimation, improving the performance of uplink channels in 5G NR HetNets by optimizing power control for channels like PUSCH, PUCCH, SRS, and PRACH.
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Figure CN2024077443_21082025_PF_FP_ABST
Abstract
Description
PATHLOSS OFFSET DETERMINATION IN ASYMMETRIC HETEROGENEOUS NETWORKSTECHNICAL FIELD
[0001] This patent document is directed generally to wireless communications.BACKGROUND
[0002] Mobile telecommunication technologies are moving the world toward an increasingly connected and networked society. In comparison with the existing wireless networks, next-generation systems and wireless communication techniques will need to support a much wider range of use-case characteristics and provide a more complex and sophisticated range of access requirements and flexibilities.
[0003] Long-Term Evolution (LTE) is a standard for wireless communication for mobile devices and data terminals developed by 3rd Generation Partnership Project (3GPP) . LTE Advanced (LTE-A) is a wireless communication standard that enhances the LTE standard. The 5th generation of wireless system, known as 5G, advances the LTE and LTE-Awireless standards and is committed to supporting higher data rates, large number of connections, ultra-low latency, high reliability, and other emerging business needs.SUMMARY
[0004] This patent document discloses methods to facilitate pathloss estimation of uplink transmission power in asymmetric heterogeneous network (HetNet) operations. The estimation uses mathematical manipulations of several applied offsets, such as a pathloss reference signal power offset, a higher layer filtered reference signal received power (RSRP) offset, and a pathloss estimation offset. The methods can be used for a physical uplink shared channel (PUSCH) , a physical uplink control channel (PUCCH) , a sounding reference signal (SRS) , or a physical random access channel (PRACH) .
[0005] A first example wireless communication method includes receiving, by a wireless device, a power control signaling. The method further includes transmitting, by the wireless device, an uplink transmission using an uplink transmission configuration indication (TCI) state, where a pathloss estimation of an uplink transmission power of the uplink transmission is determined by an applied offset according to the power control signaling.
[0006] A second example wireless communication method includes transmitting, by a network device, a power control signaling. The method further includes receiving, by the network device, an uplink transmission using an uplink transmission configuration indication (TCI) state, where a pathloss estimation of an uplink transmission power of the uplink transmission is determined by an applied offset according to the power control signaling.
[0007] Note that where the patent document discloses a method of transmitting an information by a first device to a second device, it will be understood that a method of receiving the information by the second device from the first device is also disclosed. Similarly, where a method of receiving a message by a first device from a second device is disclosed, it will be understood that the message is transmitted by the second device to the first device.
[0008] In yet another example embodiment, a device that is configured or operable to perform the above-described methods is disclosed. The device includes at least one processor configured to implement the above-described methods.
[0009] In yet another example embodiment, the above-described methods are embodied in the form of processor-executable code and stored in a non-transitory computer-readable storage medium. The code included in the computer readable storage medium when executed by a processor, causes the processor to implement the methods described in this patent document.
[0010] The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims.BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 illustrates an example heterogeneous network (HetNet) .
[0012] FIG. 2 is an example flowchart for transmitting an uplink transmission with a determined pathloss estimation.
[0013] FIG. 3 is an example flowchart for receiving an uplink transmission with a determined pathloss estimation.
[0014] FIG. 4 illustrates an example block diagram of a hardware platform that may be a part of a network device or a wireless device.
[0015] FIG. 5 illustrates example wireless communication including a Base Station (BS) and User Equipments (UEs) based on some implementations of the disclosed technology.DETAILED DESCRIPTION
[0016] The example headings for the various sections below are used to facilitate the understanding of the disclosed subject matter and do not limit the scope of the claimed subject matter in any way. Accordingly, one or more features of one example section can be combined with one or more features of another example section. Furthermore, 5G terminology is used for the sake of clarity of explanation, but the techniques disclosed in the present document are not limited to 5G technology only and may be used in wireless systems that implemented other protocols.
[0017] I. Introduction
[0018] The present patent document discloses pathloss estimation using applied offsets. The disclosed methods, among other benefits, improve the efficiency and accuracy of pathloss estimation.
[0019] In the current 5th generation (5G) new radio (NR) system, the HetNet (Heterogeneous Network) scenario refers to a variety of different types of network structures within the same service area. The key advantage of a HetNet in 5G is that it enhances the network’s capacity and coverage by allowing for seamless hand-offs between different types of networks. For instance, as a user moves from a macro cell to a micro cell environment, their device can switch networks without experiencing a drop in service quality or connection speed. This is particularly important for applications that require low latency and high reliability, such as autonomous vehicles, remote surgery, and industrial automation.
[0020] One typical operating architecture of HetNet is asymmetric downlink (DL) single transmission and reception point (sTRP) and uplink (UL) multiple transmission and reception point (mTRP) , where macro base stations (BS) and micro nodes are deployed. The best serving site providing downlink services to a user equipment (UE) can be different from that providing uplink services when the optimal site selection scheme is applied to downlink and uplink individually. The former is determined according to optimal DL received power (e.g., Reference Signal Received Power (RSRP) ) , but the latter is determined with the objective of minimizing propagation loss (e.g., pathloss) . Still using DL and UL serving site bundling architecture as in legacy can lead to performance degradation. Consequently, the question is how to enable the offset of uplink pathloss in this scenario.
[0021] MTRP operation of MIMO in 5G NR is described as follows.
[0022] The 5G New Radio (NR) Multiple Input Multiple Output (MIMO) technology is enhanced by the implementation of Multi-TRP (Transmission and Reception Point) technology. In the context of 5G NR, MIMO is a key feature that significantly improves the overall performance of wireless communication systems by employing multiple antennas at both the transmitter and receiver. This allows for increased spatial diversity, which leads to better signal quality, higher data rates, and improved reliability.
[0023] Multi-TRP technology in 5G NR MIMO involves the use of multiple TRPs for data transmission and reception. A TRP consists of a transmitter and a receiver antenna array, and each TRP can operate independently or in collaboration with other TRPs to enhance the communication capabilities. With Multi-TRP, the spatial domain is exploited to its full potential, providing a means to support multiple users simultaneously within the same frequency band.
[0024] The key benefits of Multi-TRP in 5G NR MIMO include enhanced spatial multiplexing, improved beamforming, greater spectral efficiency, robustness in high density scenarios, and flexibility for mmWave deployments.
[0025] In summary, Multi-TRP technology in 5G NR MIMO enhances the capabilities of the network by providing a more efficient and robust way to utilize the available spectrum and to support a higher number of simultaneous connections. It accomplishes this by leveraging the spatial domain for improved data transmission and reception, thereby paving the way for the future of high-speed, high-density wireless communication.
[0026] HetNet scenario in 5G NR is described as follows.
[0027] The HetNet (Heterogeneous Network) scenario for 5G New Radio (NR) refers to a network configuration that integrates a variety of different cell types and access technologies to provide a seamless and efficient user experience. In a HetNet, the goal is to combine both macro-cells (large, traditional base stations with a wide coverage area) and micro cells (smaller, low-power base stations with a shorter coverage area) under a unified management framework.
[0028] Nevertheless, the best serving site providing downlink services to a UE can be different from that providing uplink services when the optimal site selection scheme is applied to downlink and uplink individually. The former is determined according to optimal DL received power (e.g., RSRP) , but the latter is determined with objective of minimizing propagation loss (e.g., pathloss) . Still using DL and UL serving site bundling architecture as in legacy can lead to performance degradation. One diagram of proposed mechanism can be found in FIG. 1. FIG. 1 shows DL / UL site decoupling in HetNet.
[0029] In a HetNet scenario, 5G NR is designed to work alongside existing long-term evolution (LTE) and other wireless technologies, leveraging the strengths of each to create a cohesive and powerful network infrastructure. This allows operators to incrementally deploy 5G NR while still supporting older generations of technology, ensuring a smooth transition to the new standard and minimizing disruption to existing users.
[0030] Overall, the HetNet scenario for 5G NR is about creating a flexible, efficient, and user-centric network that can adapt to the diverse needs of modern wireless communication, delivering high-speed and high-quality connections no matter where users are or what they are doing.
[0031] Open loop power control of uplink transmission is described as follows.
[0032] NR uplink power control is the set of algorithms and tools by which the transmit power for different uplink physical channels and signals is controlled to ensure that they are received by the network at an appropriate power level.
[0033] As part of uplink power control, open-loop power control includes support for pathloss estimation and / or fractional pathloss compensation, where the UE determines the uplink pathloss based on downlink measurements and sets the transmit power accordingly. Denoted as P0+α·PL, it represents basic open-loop power control optionally supporting fractional pathloss compensation. P0 is the target received power of the uplink transmission, α∈ (0, 1 ] is the factor for fractional pathloss compensation, and PL is the uplink pathloss estimation based on measurements on downlink signal.
[0034] Generally, the value of open-loop power control parameters of different uplink channel and signal can be specified as follows:
[0035] For PUSCH,
[0036] When it is operated in FR1, the UE obtains the value of P0 and α according to one value (afirst one or a second one) of a set of P0 and α, the UE obtains PL according to a first reference signal of pathloss estimation.
[0037] When it is operated in FR2, the UE obtains the value of P0 according to spatial relation indication that used to indicate the mapping between PUSCH and a set of P0 and α, the UE obtains PL according to spatial relation indication that used to indicate the mapping between PUSCH and a set of reference signals of pathloss estimation.
[0038] For PUCCH,
[0039] When it is operated in FR1, the UE obtains the value of P0 according to a first value of a set of P0, the UE obtains PL according to a first reference signal of pathloss estimation.
[0040] When it is operated in FR2, the UE obtains the value of P0 according to spatial relation indication that used to indicate the mapping between PUCCH and a set of P0, the UE obtains PL according to spatial relation indication that used to indicate the mapping between PUCCH and a set of reference signals of pathloss estimation.
[0041] For SRS,
[0042] The UE obtains the value of P0 according to that configured for SRS resource set of the SRS, the UE obtains PL according to reference signal of pathloss estimation that configured for SRS resource set of the SRS.
[0043] For PRACH,
[0044] The UE obtains the value of P0 according to the configuration of a cell, the UE obtains PL according to reference signal of pathloss estimation that configured for the PRACH.
[0045] Other relevant terminologies are described as follows.
[0046] Notes that, in this patent document, the definition of “beam” or “beam state” is equivalent to at least one of: quasi-co-location (QCL) state, transmission configuration indicator (TCI) state, spatial relation (also called as spatial relation information) , reference signal (RS) , spatial filter or precoding. Furthermore, in this patent document, “beam state” is also called as “beam” . Specifically,
[0047] The definition of “Tx beam” is equivalent to at least one of: QCL state, TCI state, spatial relation state, DL reference signal, UL reference signal, Tx spatial filter or Tx precoding;
[0048] The definition of “Rx beam” is equivalent to at least one of: QCL state, TCI state, spatial relation state, spatial filter, Rx spatial filter or Rx precoding;
[0049] The definition of “beam ID” is equivalent to at least one of: QCL state index, TCI state index, spatial relation state index, reference signal index, spatial filter index or precoding index.
[0050] Specifically, the spatial filter can be either UE-side or gNB-side one, and the spatial filter is also called as spatial-domain filter.
[0051] Notes that, in this patent document, “spatial relation” includes one or more reference RSs, which is used to represent the same or quasi-co “spatial relation” between targeted “RS or channel” and the one or more reference RSs.
[0052] Notes that, in this patent document, “spatial relation” also means at least one of: the beam, spatial parameter or spatial domain filter.
[0053] Notes that, in this patent document, the definition of “UL TCI state” is equivalent to at least one of: the TCI state that is activated / configured for the corresponding UL transmission, which can be configured by the higher layer parameter TCI-UL-State.
[0054] Notes that, in this patent document, “QCL state” includes one or more reference RSs and their corresponding QCL type parameters, where QCL type parameters include at least one of the following aspect or combination: [1] Doppler spread, [2] Doppler shift, [3] delay spread, [4] average delay, [5] average gain, and [6] Spatial parameter (which is also called as spatial Rx parameter) . In this patent document, “TCI state” is equivalent to “QCL state” . In this patent document, there are the following definitions for ‘QCL-TypeA’ , ‘QCL-TypeB’ , ‘QCL-TypeC’ , and ‘QCL-TypeD’ .
[0055] 'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread}
[0056] 'QCL-TypeB': {Doppler shift, Doppler spread}
[0057] 'QCL-TypeC': {Doppler shift, average delay}
[0058] 'QCL-TypeD': {Spatial Rx parameter}
[0059] Notes that, in this patent document, a RS includes channel state information reference signal (CSI-RS) , synchronization signal block (SSB) (which is also called as SS / PBCH) , demodulation reference signal (DMRS) , sounding reference signal (SRS) , and physical random access channel (PRACH) . Furthermore, the RS at least includes DL reference signal and UL reference signaling.
[0060] A DL RS at least includes CSI-RS, SSB, DMRS (e.g., DL DMRS) ;
[0061] A UL RS at least includes SRS, DMRS (e.g., UL DMRS) , and PRACH.
[0062] Notes that, in this patent document, “UL signal” can be PUCCH, PUSCH, or SRS, PRACH.
[0063] Notes that, in this patent document, “DL signal” can be PDCCH, PDSCH, CSI-RS, or SSB.
[0064] Notes that, in this patent document, the definition of “uplink” is equivalent to at least one of: PUSCH, PUCCH, SRS, or PRACH.
[0065] Notes that, in this patent document, the definition of “downlink” is equivalent to at least one of: PDSCH, PDCCH, CSI-RS, SSB, or DL-PRS.
[0066] Notes that, in this patent document, the definition of “communication” is equivalent to at least one of: downlink reception, or uplink transmission.
[0067] Notes that, in this patent document, the DCI is equivalent to at least one of: DCI format 1_0, DCI format 1_1, DCI format 1_2, DCI format 1_3, DCI format 0_0, DCI format 0_1, DCI format 1_2, or DCI format 0_3.
[0068] II. Embodiment 1
[0069] Embodiment 1 describes pathloss estimation of UL transmission towards UL-only TRP.
[0070] UE receives the signaling related to power control from NW, then UE transmits uplink transmission to NW.
[0071] UE determines pathloss estimation of the uplink transmission power according to the signaling from NW.
[0072] The signaling can be at least one of: DCI, MAC CE, or RRC.
[0073] The uplink transmission can be at least one of: PUSCH, PUCCH, SRS, or PRACH.
[0074] The uplink transmission can be using an UL TCI state (e.g., the higher layer parameter TCI-UL-State) .
[0075] The reference signal configured in UL TCI state can be at least one of: SSB, CSI-RS or SRS.
[0076] When the reference signal is configured to SRS, the SRS can be used for beam management (e.g., the higher layer parameter usage of SRS resource is configured to 'beamManagement' ) .
[0077] For the pathloss estimation of the uplink transmission power (denoted as PL (qd) , where qd is the identity of pathloss reference signal) , it is determined by at least one of the following factors:
[0078] Factor-1: Power of pathloss reference signal (denoted as referenceSignalPower) .
[0079] The pathloss reference signal can be transmitted from NW to UE, which can be at least one of SSB or CSI-RS.
[0080] The pathloss reference signal can be transmitted from UE to NW, which can be SRS.
[0081] The pathloss estimation of SRS is equal to the transmitted power of SRS in UE side minus the target received power of SRS in NW side.
[0082] The SRS can be used for beam management (e.g., the higher layer parameter usage of SRS resource is configured to 'beamManagement') .
[0083] Factor-2: Pathloss reference signal power offset (denoted as PL-RS offset) .
[0084] The value of PL-RS offset can be positive, negative, or zero.
[0085] The PL-RS offset can be associated with or configured to a group of pathloss reference signals.
[0086] The PL-RS offset can be associated with or configured to the reference signal of the applied UL TCI state.
[0087] The PL-RS offset can be associated with a TAG that applied to the uplink transmission.
[0088] The PL-RS offset can be associated with a closed loop that applied to the uplink transmission.
[0089] The PL-RS offset can be associated with a target received power (denoted as p0) that configured to the uplink transmission.
[0090] The PL-RS offset can be associated with a specific value of CORESETPoolIndex.
[0091] An applied PL-RS offset can be indicated by a DCI to the uplink transmission.
[0092] The applied PL-RS offset can be selected from a number of PL-RS offsets that configured by RRC.
[0093] The applied PL-RS offset can be selected from a number of PL-RS offsets that activated by MAC CE.
[0094] An applied PL-RS offset can be indicated by MAC CE to an uplink transmission.
[0095] The applied PL-RS offset can be selected from a number of PL-RS offsets that configured by RRC.
[0096] Factor-3: Higher layer filtered RSRP (denoted as higher layer filtered RSRP) .
[0097] The higher layer filtered RSRP is defined for a reference serving cell and its higher layer filter configuration for the reference serving cell.
[0098] Factor-4: Higher layer filtered RSRP offset (denoted as RSRP offset) .
[0099] The value of RSRP offset can be positive, negative, or zero.
[0100] The RSRP offset can be associated with or configured to a group of pathloss reference signals.
[0101] The RSRP offset can be associated with or configured to the reference signal of UL TCI state for the uplink transmission.
[0102] The RSRP offset can be associated with a TAG that applied to the uplink transmission (s) .
[0103] The RSRP offset can be associated with a closed loop that applied to the uplink transmission (s) .
[0104] The RSRP offset can be associated with a target received power (denoted as p0) that configured to the uplink transmission.
[0105] The RSRP offset can be associated with a specific value of CORESETPoolIndex.
[0106] An applied RSRP offset can be indicated by a DCI to the uplink transmission.
[0107] The applied RSRP offset can be selected from a number of RSRP offsets that configured by RRC.
[0108] The applied RSRP offset can be selected from a number of RSRP offsets that activated by MAC CE.
[0109] An applied RSRP offset can be indicated by MAC CE to an uplink transmission.
[0110] The applied RSRP offset can be selected from a number of RSRP offsets that configured by RRC.
[0111] Factor-5: pathloss estimation offset (denoted as PL (offset) ) .
[0112] The value of PL (offset) can be positive, negative, or zero.
[0113] The PL (offset) can be associated with or configured to a group of pathloss reference signals.
[0114] The PL (offset) can be associated with or configured to the reference signal of UL TCI state for the uplink transmission.
[0115] The PL (offset) can be associated with a TAG that applied to the uplink transmission (s) .
[0116] The PL (offset) can be associated with a closed loop that applied to the uplink transmission (s) .
[0117] The PL (offset) can be associated with a target received power (denoted as p0) that configured to the uplink transmission.
[0118] The PL (offset) can be associated with a specific value of CORESETPoolIndex.
[0119] An applied PL (offset) can be indicated by a DCI to the uplink transmission.
[0120] The applied PL (offset) can be selected from a number of PL (offset) that configured by RRC.
[0121] The applied PL (offset) can be selected from a number of PL (offset) that activated by MAC CE.
[0122] An applied PL (offset) can be indicated by MAC CE to an uplink transmission.
[0123] The applied PL (offset) can be selected from a number of PL (offset) that configured by RRC.
[0124] For the pathloss estimation of the uplink transmission power, its value can be calculated by at least one of the following formulas:
[0125] PL (qd) = referenceSignalPower –higher layer filtered RSRP + PL (offset) (1)
[0126] PL (qd) = (referenceSignalPower + PL-RS offset) –higher layer filtered RSRP (2)
[0127] PL (qd) = referenceSignalPower – (higher layer filtered RSRP + RSRP offset) (3)
[0128] III. Embodiment 2
[0129] Embodiment 2 describes pathloss estimation of PUSCH transmission towards UL-only TRP.
[0130] UE receives the signaling related to power control from NW, then UE transmits PUSCH transmission to NW.
[0131] UE determines pathloss estimation of the PUSCH transmission power according to the signaling from NW.
[0132] The signaling can be at least one of: DCI, MAC CE, or RRC.
[0133] The PUSCH transmission can be using an UL TCI state (e.g., the higher layer parameter TCI-UL-State) .
[0134] The resource signal configured in UL TCI state can be at least one of: SSB, CSI-RS or SRS.
[0135] When the resource signal is configured to SRS, the SRS can be used for beam management (e.g., the higher layer parameter usage of SRS resource is configured to 'beamManagement' ) .
[0136] For the pathloss estimation of the PUSCH transmission power (denoted as PL (qd) , where qd is the identify of pathloss reference signal) , it is determined by at least one of the following factors:
[0137] Factor-1: the power of pathloss reference signal (denoted as referenceSignalPower) .
[0138] The pathloss reference signal can be transmitted from NW to UE, which can be at least one of: SSB, or CSI-RS.
[0139] The pathloss reference signal can be transmitted from UE to NW, which can be SRS.
[0140] The pathloss estimation of SRS is equal to the transmitted power of SRS in UE side minus the target received power of SRS in NW side.
[0141] The SRS can be used for beam management (e.g., the higher layer parameter usage of SRS resource is configured to 'beamManagement' ) .
[0142] Factor-2: the pathloss reference signal power offset (denoted as PL-RS offset) .
[0143] The value of PL-RS offset can be positive, negative, or zero.
[0144] The PL-RS offset can be associated with or configured to a group of pathloss reference signals.
[0145] The PL-RS offset can be associated with or configured to the reference signal of the applied UL TCI state (e.g., the first or second applied UL TCI state) .
[0146] The PL-RS offset can be associated with a TAG that applied to the PUSCH transmission.
[0147] The PL-RS offset can be associated with a closed loop that applied to the PUSCH transmission.
[0148] The PL-RS offset can be associated with a target received power (denoted as p0) that configured to the PUSCH transmission.
[0149] The PL-RS offset can be associated with a specific value of CORESETPoolIndex that associated with the PUSCH transmission.
[0150] The PL-RS offset can be associated with or configured to the SRS resource set of the PUSCH transmission.
[0151] The SRS resource set is used for codebook or non-codebook based PUSCH transmission (e.g., higher layer parameter usage of the SRS resource set can be configured to 'codebook' or 'nonCodebook' ) .
[0152] An applied PL-RS offset can be indicated by a DCI to the PUSCH transmission.
[0153] The applied PL-RS offset can be selected from a number of PL-RS offsets that configured by RRC.
[0154] The applied PL-RS offset can be selected from a number of PL-RS offsets that activated by MAC CE.
[0155] An applied PL-RS offset can be indicated by MAC CE to the PUSCH transmission.
[0156] The applied PL-RS offset can be selected from a number of PL-RS offsets that configured by RRC.
[0157] Factor-3: the higher layer filtered RSRP (denoted as higher layer filtered RSRP) .
[0158] The higher layer filtered RSRP is defined for a reference serving cell and its higher layer filter configuration for the reference serving cell.
[0159] Factor-4: the higher layer filtered RSRP offset (denoted as RSRP offset) .
[0160] The value of RSRP offset can be positive, negative, or zero.
[0161] The RSRP offset can be associated with or configured to a group of pathloss reference signals.
[0162] The RSRP offset can be associated with or configured to the reference signal of the applied UL TCI state.
[0163] The RSRP offset can be associated with a TAG that applied to the PUSCH transmission.
[0164] The RSRP offset can be associated with a closed loop that applied to the PUSCH transmission.
[0165] The RSRP offset can be associated with a target received power (denoted as p0) that configured to the PUSCH transmission.
[0166] The RSRP offset can be associated with a specific value of CORESETPoolIndex that associated with the PUSCH transmission.
[0167] The RSRP offset can be associated with or configured to the SRS resource set of the PUSCH transmission.
[0168] The SRS resource set is used for codebook or non-codebook based PUSCH transmission (e.g., higher layer parameter usage of the SRS resource set can be configured to 'codebook'or 'nonCodebook') .
[0169] An applied RSRP offset can be indicated by a DCI to the PUSCH transmission.
[0170] The applied RSRP offset can be selected from a number of RSRP offsets that configured by RRC.
[0171] The applied RSRP offset can be selected from a number of RSRP offsets that activated by MAC CE.
[0172] An applied RSRP offset can be indicated by MAC CE to an PUSCH transmission.
[0173] The applied RSRP offset can be selected from a number of RSRP offsets that configured by RRC.
[0174] Factor-5: pathloss estimation offset (denoted as PL (offset) ) .
[0175] The value of PL (offset) can be positive, negative, or zero.
[0176] The PL (offset) can be associated with or configured to a group of pathloss reference signals.
[0177] The PL (offset) can be associated with or configured to the reference signal of the applied UL TCI state.
[0178] The PL (offset) can be associated with a TAG that applied to the PUSCH transmission.
[0179] The PL (offset) can be associated with a closed loop that applied to the PUSCH transmission.
[0180] The PL (offset) can be associated with a target received power (denoted as p0) that configured to the PUSCH transmission.
[0181] The PL (offset) can be associated with a specific value of CORESETPoolIndex that associated with the PUSCH transmission.
[0182] The PL (offset) can be associated with or configured to the SRS resource set of the PUSCH transmission.
[0183] The SRS resource set is used for codebook or non-codebook based PUSCH transmission (e.g., higher layer parameter usage of the SRS resource set can be configured to 'codebook' or 'nonCodebook' ) .
[0184] An applied PL (offset) can be indicated by a DCI to the PUSCH transmission.
[0185] The applied PL (offset) can be selected from a number of PL-RS offsets that configured by RRC.
[0186] The applied PL (offset) can be selected from a number of PL-RS offsets that activated by MAC CE.
[0187] An applied PL (offset) can be indicated by MAC CE to the PUSCH transmission.
[0188] The applied PL (offset) can be selected from a number of PL-RS offsets that configured by RRC.
[0189] For the pathloss estimation of the uplink transmission power, its value can be calculated by at least one of the following formulas:
[0190] PL (qd) = referenceSignalPower –higher layer filtered RSRP + PL (offset) (1)
[0191] PL (qd) = (referenceSignalPower + PL-RS offset) –higher layer filtered RSRP (2)
[0192] PL (qd) = referenceSignalPower – (higher layer filtered RSRP + RSRP offset) (3)
[0193] IV. Embodiment 3
[0194] Embodiment 3 describes pathloss estimation of PUCCH transmission towards UL-only TRP.
[0195] UE receives the signaling related to power control from NW, then UE transmits PUCCH transmission to NW.
[0196] UE determines pathloss estimation of the PUCCH transmission power according to the signaling from NW.
[0197] The signaling can be at least one of: DCI, MAC CE, or RRC.
[0198] The PUCCH transmission can be using an UL TCI state (e.g., the higher layer parameter TCI-UL-State) .
[0199] The resource signal configured in UL TCI state can be at least one of: SSB, CSI-RS or SRS.
[0200] When the resource signal is configured to SRS, the SRS can be used for beam management (e.g., the higher layer parameter usage of SRS resource is configured to 'beamManagement' ) .
[0201] For the pathloss estimation of the PUCCH transmission power (denoted as PL (qd) , where qd is the identify of pathloss reference signal) , it is determined by at least one of the following factors:
[0202] Factor-1: the transmitted power of pathloss reference signal (denoted as referenceSignalPower) .
[0203] The pathloss reference signal can be transmitted from NW to UE, which can be at least one of: SSB, or CSI-RS.
[0204] The pathloss reference signal can be transmitted from UE to NW, which can be SRS.
[0205] The pathloss estimation of SRS is equal to the transmitted power of SRS in UE side minus the target received power of SRS in NW side.
[0206] The SRS can be used for beam management (e.g., the higher layer parameter usage of SRS resource is configured to 'beamManagement') .
[0207] Factor-2: the pathloss reference signal power offset (denoted as PL-RS offset) .
[0208] The value of PL-RS offset can be positive, negative, or zero.
[0209] The PL-RS offset can be associated with or configured to a group of pathloss reference signals.
[0210] The PL-RS offset can be associated with or configured to the reference signal of the applied UL TCI state.
[0211] The PL-RS offset can be associated with a TAG that applied to the PUCCH transmission.
[0212] The PL-RS offset can be associated with a closed loop that applied to the PUCCH transmission.
[0213] The PL-RS offset can be associated with a target received power (denoted as p0) that configured to the PUCCH transmission.
[0214] The PL-RS offset can be associated with a specific value of CORESETPoolIndex that associated with the PUCCH transmission.
[0215] The PL-RS offset can be associated with a set of power control parameters configured for PUCCH transmission.
[0216] The set of power control parameters configured for PUCCH transmission that operated in FR1.
[0217] An applied PL-RS offset can be indicated by a DCI to the PUCCH transmission.
[0218] The applied PL-RS offset can be selected from a number of PL-RS offsets that configured by RRC.
[0219] The applied PL-RS offset can be selected from a number of PL-RS offsets that activated by MAC CE.
[0220] An applied PL-RS offset can be indicated by MAC CE to the PUCCH transmission.
[0221] The applied PL-RS offset can be selected from a number of PL-RS offsets that configured by RRC.
[0222] Factor-3: the higher layer filtered RSRP (denoted as higher layer filtered RSRP) .
[0223] The higher layer filtered RSRP is defined for a reference serving cell and its higher layer filter configuration for the reference serving cell.
[0224] Factor-4: the higher layer filtered RSRP offset (denoted as RSRP offset) .
[0225] The value of RSRP offset can be positive, negative, or zero.
[0226] The RSRP offset can be associated with or configured to a group of pathloss reference signals.
[0227] The RSRP offset can be associated with or configured to the reference signal of the applied UL TCI state.
[0228] The RSRP offset can be associated with a TAG that applied to the PUCCH transmission.
[0229] The RSRP offset can be associated with a closed loop that applied to the PUCCH transmission.
[0230] The RSRP offset can be associated with a target received power (denoted as p0) that configured to the PUCCH transmission.
[0231] The RSRP offset can be associated with a specific value of CORESETPoolIndex that associated with the PUCCH transmission.
[0232] The RSRP offset can be associated with a set of power control parameters configured for PUCCH transmission.
[0233] The set of power control parameters configured for PUCCH transmission that operated in FR1.
[0234] An applied RSRP offset can be indicated by a DCI to the PUSCH transmission.
[0235] The applied RSRP offset can be selected from a number of RSRP offsets that configured by RRC.
[0236] The applied RSRP offset can be selected from a number of RSRP offsets that activated by MAC CE.
[0237] An applied RSRP offset can be indicated by MAC CE to an PUSCH transmission.
[0238] The applied RSRP offset can be selected from a number of RSRP offsets that configured by RRC.
[0239] Factor-5: pathloss estimation offset (denoted as PL (offset) ) .
[0240] The value of PL (offset) can be positive, negative, or zero.
[0241] The PL (offset) can be associated with or configured to a group of pathloss reference signals.
[0242] The PL (offset) can be associated with or configured to the reference signal of the applied UL TCI state.
[0243] The PL (offset) can be associated with a TAG that applied to the PUCCH transmission.
[0244] The PL (offset) can be associated with a closed loop that applied to the PUCCH transmission.
[0245] The PL (offset) can be associated with a target received power (denoted as p0) that configured to the PUCCH transmission.
[0246] The PL (offset) can be associated with a specific value of CORESETPoolIndex that associated with the PUCCH transmission.
[0247] The PL (offset) can be associated with a set of power control parameters configured for PUCCH transmission.
[0248] The set of power control parameters configured for PUCCH transmission that operated in FR1.
[0249] An applied PL (offset) can be indicated by a DCI to the PUCCH transmission.
[0250] The applied PL (offset) can be selected from a number of PL-RS offsets that configured by RRC.
[0251] The applied PL (offset) can be selected from a number of PL-RS offsets that activated by MAC CE.
[0252] An applied PL (offset) can be indicated by MAC CE to the PUCCH transmission.
[0253] The applied PL (offset) can be selected from a number of PL-RS offsets that configured by RRC.
[0254] For the pathloss estimation of the uplink transmission power, its value can be calculated by at least one of the following formulas:
[0255] PL (qd) = referenceSignalPower –higher layer filtered RSRP + PL (offset) (1)
[0256] PL (qd) = (referenceSignalPower + PL-RS offset) –higher layer filtered RSRP (2)
[0257] PL (qd) = referenceSignalPower – (higher layer filtered RSRP + RSRP offset) (3)
[0258] V. Embodiment 4
[0259] Embodiment 4 describes pathloss estimation of SRS transmission towards UL-only TRP.
[0260] UE receives the signaling related to power control from NW, then UE transmits SRS transmission to NW.
[0261] UE determines pathloss estimation of the SRS transmission power according to the signaling from NW.
[0262] The signaling can be at least one of: DCI, MAC CE, or RRC.
[0263] The PUSCH transmission can be using an UL TCI state (e.g., the higher layer parameter TCI-UL-State) .
[0264] The resource signal configured in UL TCI state can be at least one of: SSB, CSI-RS or SRS.
[0265] When the resource signal is configured to SRS, the SRS can be used for beam management (e.g., the higher layer parameter usage of SRS resource is configured to 'beamManagement' ) , and the target SRS is used for usage except for beam management.
[0266] For the pathloss estimation of the SRS transmission power (denoted as PL (qd) , where qd is the identify of pathloss reference signal) , it is determined by at least one of the following factors:
[0267] Factor-1: the power of pathloss reference signal (denoted as referenceSignalPower) .
[0268] The pathloss reference signal can be transmitted from NW to UE, which can be at least one of: SSB, or CSI-RS.
[0269] The pathloss reference signal can be transmitted from UE to NW, which can be SRS.
[0270] The pathloss estimation of SRS is equal to the transmitted power of SRS in UE side minus the target received power of SRS in NW side.
[0271] The SRS can be used for beam management (e.g., the higher layer parameter usage of SRS resource is configured to 'beamManagement') .
[0272] Factor-2: the pathloss reference signal power offset (denoted as PL-RS offset) .
[0273] The value of PL-RS offset can be positive, negative, or zero.
[0274] The PL-RS offset can be associated with or configured to a group of pathloss reference signals.
[0275] The PL-RS offset can be associated with or configured to the reference signal of the applied UL TCI state.
[0276] The PL-RS offset can be associated with a TAG that applied to the SRS transmission.
[0277] The PL-RS offset can be associated with a closed loop that applied to the SRS transmission.
[0278] The PL-RS offset can be associated with a target received power (denoted as p0) that configured to the SRS transmission.
[0279] The PL-RS offset can be associated with a specific value of CORESETPoolIndex that associated with the SRS transmission.
[0280] The PL-RS offset can be associated with or configured to the SRS resource set of the SRS transmission.
[0281] An applied PL-RS offset can be indicated by a DCI to the SRS transmission.
[0282] The applied PL-RS offset can be selected from a number of PL-RS offsets that configured by RRC.
[0283] The applied PL-RS offset can be selected from a number of PL-RS offsets that activated by MAC CE.
[0284] An applied PL-RS offset can be indicated by MAC CE to the SRS transmission.
[0285] The applied PL-RS offset can be selected from a number of PL-RS offsets that configured by RRC.
[0286] Factor-3: the higher layer filtered RSRP (denoted as higher layer filtered RSRP) .
[0287] The higher layer filtered RSRP is defined for a reference serving cell and its higher layer filter configuration for the reference serving cell.
[0288] Factor-4: the higher layer filtered RSRP offset (denoted as RSRP offset) .
[0289] The value of RSRP offset can be positive, negative, or zero.
[0290] The RSRP offset can be associated with or configured to a group of pathloss reference signals.
[0291] The RSRP offset can be associated with or configured to the reference signal of the applied UL TCI state.
[0292] The RSRP offset can be associated with a TAG that applied to the SRS transmission.
[0293] The RSRP offset can be associated with a closed loop that applied to the SRS transmission.
[0294] The RSRP offset can be associated with a target received power (denoted as p0) that configured to the SRS transmission.
[0295] The RSRP offset can be associated with a specific value of CORESETPoolIndex that associated with the SRS transmission.
[0296] The RSRP offset can be associated with or configured to the SRS resource set of the SRS transmission.
[0297] An applied RSRP offset can be indicated by a DCI to the SRS transmission.
[0298] The applied RSRP offset can be selected from a number of RSRP offsets that configured by RRC.
[0299] The applied RSRP offset can be selected from a number of RSRP offsets that activated by MAC CE.
[0300] An applied RSRP offset can be indicated by MAC CE to an SRS transmission.
[0301] The applied RSRP offset can be selected from a number of RSRP offsets that configured by RRC.
[0302] Factor-5: pathloss estimation offset (denoted as PL (offset) ) .
[0303] The value of PL (offset) can be positive, negative, or zero.
[0304] The PL (offset) can be associated with or configured to a group of pathloss reference signals.
[0305] The PL (offset) can be associated with or configured to the reference signal of the applied UL TCI state.
[0306] The PL (offset) can be associated with a TAG that applied to the SRS transmission.
[0307] The PL (offset) can be associated with a closed loop that applied to the SRS transmission.
[0308] The PL (offset) can be associated with a target received power (denoted as p0) that configured to the SRS transmission.
[0309] The PL (offset) can be associated with a specific value of CORESETPoolIndex that associated with the SRS transmission.
[0310] The PL (offset) can be associated with or configured to the SRS resource set of the PUSCH transmission.
[0311] An applied PL (offset) can be indicated by a DCI to the SRS transmission.
[0312] The applied PL (offset) can be selected from a number of PL-RS offsets that configured by RRC.
[0313] The applied PL (offset) can be selected from a number of PL-RS offsets that activated by MAC CE.
[0314] An applied PL (offset) can be indicated by MAC CE to the SRS transmission.
[0315] The applied PL (offset) can be selected from a number of PL-RS offsets that configured by RRC.
[0316] For the pathloss estimation of the uplink transmission power, its value can be calculated by at least one of the following formulas:
[0317] PL (qd) = referenceSignalPower –higher layer filtered RSRP + PL (offset) (1)
[0318] PL (qd) = (referenceSignalPower + PL-RS offset) –higher layer filtered RSRP (2)
[0319] PL (qd) = referenceSignalPower – (higher layer filtered RSRP + RSRP offset) (3)
[0320] VI. Embodiment 5
[0321] Embodiment 5 describes pathloss estimation of PRACH transmission towards UL-only TRP.
[0322] UE receives the signaling related to power control from NW, then UE transmits PRACH transmission to NW.
[0323] UE determines pathloss estimation of the PRACH transmission power according to the signaling from NW.
[0324] The signaling can be at least one of: DCI, MAC CE, or RRC.
[0325] The PRACH transmission can be triggered by CFRA or CBRA manner.
[0326] The PRACH transmission can be using an UL TCI state (e.g., the higher layer parameter TCI-UL-State) .
[0327] The resource signal configured in UL TCI state can be at least one of: SSB, CSI-RS or SRS.
[0328] When the resource signal is configured to SRS, the SRS can be used for beam management (e.g., the higher layer parameter usage of SRS resource is configured to 'beamManagement' ) , and the target SRS is used for usage except for beam management.
[0329] For the pathloss estimation of the PRACH transmission power (denoted as PL (qd) , where qd is the identify of pathloss reference signal) , it is determined by at least one of the following factors:
[0330] Factor-1: the power of pathloss reference signal (denoted as referenceSignalPower) .
[0331] The pathloss reference signal can be transmitted from NW to UE, which can be at least one of: SSB, or CSI-RS.
[0332] The pathloss reference signal can be transmitted from UE to NW, which can be SRS.
[0333] The pathloss estimation of SRS is equal to the transmitted power of SRS in UE side minus the target received power of SRS in NW side.
[0334] The SRS can be used for beam management (e.g., the higher layer parameter usage of SRS resource is configured to 'beamManagement') .
[0335] Factor-2: the pathloss reference signal power offset (denoted as PL-RS offset) .
[0336] The value of PL-RS offset can be positive, negative, or zero.
[0337] The PL-RS offset can be associated with or configured to a group of pathloss reference signals.
[0338] The PL-RS offset can be associated with or configured to the reference signal of the applied UL TCI state.
[0339] The PL-RS offset can be associated with a TAG that applied to the PRACH transmission.
[0340] The PL-RS offset can be associated with a closed loop that applied to the PRACH transmission.
[0341] The PL-RS offset can be associated with a target received power (denoted as p0) that configured to the PRACH transmission.
[0342] The PL-RS offset can be associated with a specific value of CORESETPoolIndex that associated with the PRACH transmission.
[0343] The PL-RS offset can be associated with a RACH configuration of the PRACH transmission.
[0344] An applied PL-RS offset can be indicated by a DCI to the PRACH transmission.
[0345] The applied PL-RS offset can be selected from a number of PL-RS offsets that configured by RRC.
[0346] The applied PL-RS offset can be selected from a number of PL-RS offsets that activated by MAC CE.
[0347] An applied PL-RS offset can be indicated by MAC CE to the PRACH transmission.
[0348] The applied PL-RS offset can be selected from a number of PL-RS offsets that configured by RRC.
[0349] Factor-3: the higher layer filtered RSRP (denoted as higher layer filtered RSRP) .
[0350] The higher layer filtered RSRP is defined for a reference serving cell and its higher layer filter configuration for the reference serving cell.
[0351] Factor-4: the higher layer filtered RSRP offset (denoted as RSRP offset) .
[0352] The value of RSRP offset can be positive, negative, or zero.
[0353] The RSRP offset can be associated with or configured to a group of pathloss reference signals.
[0354] The RSRP offset can be associated with or configured to the reference signal of the applied UL TCI state.
[0355] The RSRP offset can be associated with a TAG that applied to the PRACH transmission.
[0356] The RSRP offset can be associated with a closed loop that applied to the PRACH transmission.
[0357] The RSRP offset can be associated with a target received power (denoted as p0) that configured to the PRACH transmission.
[0358] The RSRP offset can be associated with a specific value of CORESETPoolIndex that associated with the PRACH transmission.
[0359] The RSRP offset can be associated with a RACH configuration of the PRACH transmission.
[0360] An applied RSRP offset can be indicated by a DCI to the PRACH transmission.
[0361] The applied RSRP offset can be selected from a number of RSRP offsets that configured by RRC.
[0362] The applied RSRP offset can be selected from a number of RSRP offsets that activated by MAC CE.
[0363] An applied RSRP offset can be indicated by MAC CE to an PRACH transmission.
[0364] The applied RSRP offset can be selected from a number of RSRP offsets that configured by RRC.
[0365] Factor-5: pathloss estimation offset (denoted as PL (offset) ) .
[0366] The value of PL (offset) can be positive, negative, or zero.
[0367] The PL (offset) can be associated with or configured to a group of pathloss reference signals.
[0368] The PL (offset) can be associated with or configured to the reference signal of the applied UL TCI state.
[0369] The PL (offset) can be associated with a TAG that applied to the PRACH transmission.
[0370] The PL (offset) can be associated with a closed loop that applied to the PRACH transmission.
[0371] The PL (offset) can be associated with a target received power (denoted as p0) that configured to the PRACH transmission.
[0372] The PL (offset) can be associated with a specific value of CORESETPoolIndex that associated with the PRACH transmission.
[0373] The PL (offset) can be associated with a RACH configuration of the PRACH transmission.
[0374] An applied PL (offset) can be indicated by a DCI to the PRACH transmission.
[0375] The applied PL (offset) can be selected from a number of PL-RS offsets that configured by RRC.
[0376] The applied PL (offset) can be selected from a number of PL-RS offsets that activated by MAC CE.
[0377] An applied PL (offset) can be indicated by MAC CE to the PRACH transmission.
[0378] The applied PL (offset) can be selected from a number of PL-RS offsets that configured by RRC.
[0379] For the pathloss estimation of the uplink transmission power, its value can be calculated by at least one of the following formulas:
[0380] PL (qd) = referenceSignalPower –higher layer filtered RSRP + PL (offset) (1)
[0381] PL (qd) = (referenceSignalPower + PL-RS offset) –higher layer filtered RSRP (2)
[0382] PL (qd) = referenceSignalPower – (higher layer filtered RSRP + RSRP offset) (3)
[0383] To facilitate the offset of uplink pathloss estimation in asymmetric HetNet operation (i.e., asymmetric DL sTRP with UL mTRP) , at least the following features are provided:
[0384] Dynamic update / indication of pathloss offset for PUSCH, PUCCH, SRS and PRACH;
[0385] TRP specific power offset for PUSCH, PUCCH, SRS and PRACH;
[0386] Determinations of pathloss offset calculation;
[0387] The formula of pathloss offset calculation;
[0388] The association between pathloss offset and TCI states / TCI state group / TA / CORESETPoolIndex / Closed-loop, etc.
[0389] FIG. 2 is an example flowchart for transmitting an uplink transmission with a determined pathloss estimation. Operation 202 includes receiving, by a wireless device, a power control signaling. Operation 204 includes transmitting, by the wireless device, an uplink transmission using an uplink transmission configuration indication (TCI) state, where a pathloss estimation of an uplink transmission power of the uplink transmission is determined by an applied offset according to the power control signaling. In some embodiments, the method can be implemented according to Embodiments 1-5. In some embodiments, performing further steps of the method can be based on a better system performance than a legacy protocol.
[0390] In some embodiments, the uplink transmission includes at least one of a physical uplink shared channel (PUSCH) , a physical uplink control channel (PUCCH) , a sounding reference signal (SRS) , or a physical random access channel (PRACH) .
[0391] In some embodiments, a reference signal configured in the uplink TCI state includes at least one of a synchronization / physical broadcast channel (PBCH) signal block (SSB) , a channel state information (CSI) reference signal (CSI-RS) , or a sounding reference signal (SRS) used for beam management.
[0392] In some embodiments, the applied offset is determined by at least one of the following factors: a pathloss reference signal power offset; a higher layer filtered reference signal received power (RSRP) offset; or a pathloss estimation offset.
[0393] In some embodiments, the pathloss estimation of the uplink transmission power is determined by at least one of the following factors: a power of a pathloss reference signal; or a higher layer filtered reference signal received power (RSRP) .
[0394] In some embodiments, a pathloss reference signal is transmitted from a network device to the wireless device and includes at least one of a synchronization / physical broadcast channel (PBCH) signal block (SSB) or a channel state information (CSI) reference signal (CSI-RS) , or a pathloss reference signal is transmitted from the wireless device to a network device and includes a sounding reference signal (SRS) used for beam management.
[0395] In some embodiments, a value of the applied offset is positive, negative, or zero.
[0396] In some embodiments, the applied offset is at least: associated with or configured to a group of pathloss reference signals; associated with or configured to a reference signal of the uplink TCI state; associated with a timing advance group (TAG) that is applied to the uplink transmission; associated with a closed loop that is applied to the uplink transmission; associated with a target received power that is configured to the uplink transmission; or associated with a specific value of a control resource set (CORESET) pool index.
[0397] In some embodiments, the applied offset is at least: indicated by a downlink control information (DCI) to the uplink transmission, where a pathloss reference signal power offset is selected from a number of pathloss reference signal power offsets that are configured by a radio resource control (RRC) signaling or activated by a medium access control (MAC) control element (CE) ; or indicated by a MAC CE to the uplink transmission, where a pathloss reference signal power offset is selected from a number of pathloss reference signal power offsets that are configured by a RRC signaling.
[0398] In some embodiments, a value of the pathloss estimation of the uplink transmission power is calculated using at least one of the following formulas: a power of a pathloss reference signal minus a higher layer filtered reference signal received power (RSRP) plus a pathloss estimation offset; a power of a pathloss reference signal plus a pathloss reference signal power offset minus a higher layer filtered RSRP; or a power of a pathloss reference signal minus a higher layer filtered RSRP minus a higher layer filtered RSRP offset.
[0399] In some embodiments, the applied offset is associated with or configured to a sounding reference signal (SRS) resource set of a physical uplink shared channel (PUSCH) transmission, where the SRS resource set is used for a codebook-based PUSCH transmission or a non-codebook-based PUSCH transmission.
[0400] In some embodiments, the applied offset is associated with a set of power control parameters configured for a physical uplink control channel (PUCCH) transmission that is operated in frequency range 1 (FR1) .
[0401] In some embodiments, the applied offset is associated with or configured to a sounding reference signal (SRS) resource set of a SRS transmission.
[0402] In some embodiments, the applied offset is associated with a random access channel (RACH) configuration of a physical random access channel (PRACH) transmission.
[0403] FIG. 3 is an example flowchart for receiving an uplink transmission with a determined pathloss estimation. Operation 302 includes transmitting, by a network device, a power control signaling. Operation 304 includes receiving, by the network device, an uplink transmission using an uplink transmission configuration indication (TCI) state, where a pathloss estimation of an uplink transmission power of the uplink transmission is determined by an applied offset according to the power control signaling. In some embodiments, the method can be implemented according to Embodiments 1-5. In some embodiments, performing further steps of the method can be based on a better system performance than a legacy protocol. The above embodiments for method 200 are correspondingly applicable for method 300.
[0404] FIG. 4 shows an example block diagram of a hardware platform 400 that may be a part of a network device (e.g., a base station (BS) , or a transmission and reception point (TRP) ) or a wireless device (e.g., a user equipment (UE) ) . The hardware platform 400 includes at least one processor 410 and a memory 405 having instructions stored thereupon. The instructions upon execution by the processor 410 configure the hardware platform 400 to perform the operations described in FIGS. 1-3 and in the various embodiments described in this patent document. The transmitter 415 transmits or sends information or data to another device. For example, a network device transmitter can send a message to a user equipment. The receiver 420 receives information or data transmitted or sent by another device. For example, a user equipment can receive a message from a network device. For example, a UE, a wireless device, or a network device, as described in the present document, may be implemented using the hardware platform 400.
[0405] The implementations as discussed above will apply to a wireless communication. FIG. 5 shows an example of a wireless communication system (e.g., a 5G or NR cellular network) that includes a base station 520 and one or more user equipment (UE) 511, 512, and 513. In some embodiments, the UEs access the BS (e.g., the network) using a communication link to the network (sometimes called uplink direction, as depicted by dashed arrows 531, 532, 533) , which then enables subsequent communication (e.g., shown in the direction from the network to the UEs, sometimes called downlink direction, shown by arrows 541, 542, 543) from the BS to the UEs. In some embodiments, the BS sends information to the UEs (sometimes called downlink direction, as depicted by arrows 541, 542, 543) , which then enables subsequent communication (e.g., shown in the direction from the UEs to the BS, sometimes called uplink direction, shown by dashed arrows 531, 532, 533) from the UEs to the BS. The UE may be, for example, a smartphone, a tablet, a mobile computer, a machine to machine (M2M) device, an Internet of Things (IoT) device, and so on. The UEs described in the present document may be communicatively coupled to the base station 520 depicted in FIG. 5.
[0406] It will be appreciated by one of skill in the art that the present patent document discloses pathloss estimation of uplink transmission power using applied offsets. The methods disclosed in the patent document, among other benefits, improve the efficiency and accuracy of pathloss estimation.
[0407] Some of the embodiments described herein are described in the general context of methods or processes, which may be implemented in one embodiment by a computer program product, embodied in a computer-readable medium, including computer-executable instructions, such as program code, executed by computers in networked environments. A computer-readable medium may include removable and non-removable storage devices including, but not limited to, Read Only Memory (ROM) , Random Access Memory (RAM) , compact discs (CDs) , digital versatile discs (DVD) , etc. Therefore, the computer-readable media can include a non-transitory storage media. Generally, program modules may include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. Computer-or processor-executable instructions, associated data structures, and program modules represent examples of program code for executing steps of the methods disclosed herein. The particular sequence of such executable instructions or associated data structures represents examples of corresponding acts for implementing the functions described in such steps or processes.
[0408] Some of the disclosed embodiments can be implemented as devices or modules using hardware circuits, software, or combinations thereof. For example, a hardware circuit implementation can include discrete analog and / or digital components that are, for example, integrated as part of a printed circuit board. Alternatively, or additionally, the disclosed components or modules can be implemented as an Application Specific Integrated Circuit (ASIC) and / or as a Field Programmable Gate Array (FPGA) device. Some implementations may additionally or alternatively include a digital signal processor (DSP) that is a specialized microprocessor with an architecture optimized for the operational needs of digital signal processing associated with the disclosed functionalities of this application. Similarly, the various components or sub-components within each module may be implemented in software, hardware, or firmware. The connectivity between the modules and / or components within the modules may be provided using any one of the connectivity methods and media that is known in the art, including, but not limited to, communications over the Internet, wired, or wireless networks using the appropriate protocols.
[0409] While this document contains many specifics, these should not be construed as limitations on the scope of an invention that is claimed or of what may be claimed, but rather as descriptions of features specific to particular embodiments. Certain features that are described in this document in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable sub-combination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a sub-combination or a variation of a sub-combination. Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results.
[0410] Only a few implementations and examples are described, and other implementations, enhancements and variations can be made based on what is described and illustrated in this patent document.
Claims
1.A method of wireless communication, comprising:receiving, by a wireless device, a power control signaling; andtransmitting, by the wireless device, an uplink transmission using an uplink transmission configuration indication (TCI) state, wherein a pathloss estimation of an uplink transmission power of the uplink transmission is determined by an applied offset according to the power control signaling.2.The method of claim 1, wherein the uplink transmission comprises at least one of a physical uplink shared channel (PUSCH) , a physical uplink control channel (PUCCH) , a sounding reference signal (SRS) , or a physical random access channel (PRACH) .3.The method of claim 1 or 2, wherein a reference signal configured in the uplink TCI state comprises at least one of a synchronization / physical broadcast channel (PBCH) signal block (SSB) , a channel state information (CSI) reference signal (CSI-RS) , or a sounding reference signal (SRS) used for beam management.4.The method of any of claims 1-3, wherein the applied offset is determined by at least one of the following factors:a pathloss reference signal power offset;a higher layer filtered reference signal received power (RSRP) offset; ora pathloss estimation offset.5.The method of any of claims 1-4, wherein the pathloss estimation of the uplink transmission power is determined by at least one of the following factors:a power of a pathloss reference signal; ora higher layer filtered reference signal received power (RSRP) .6.The method of any of claims 1-5, wherein a pathloss reference signal is transmitted from a network device to the wireless device and comprises at least one of a synchronization / physical broadcast channel (PBCH) signal block (SSB) or a channel state information (CSI) reference signal (CSI-RS) , or wherein a pathloss reference signal is transmitted from the wireless device to a network device and comprises a sounding reference signal (SRS) used for beam management.7.The method of any of claims 1-6, wherein a value of the applied offset is positive, negative, or zero.8.The method of any of claims 1-7, wherein the applied offset is at least:associated with or configured to a group of pathloss reference signals;associated with or configured to a reference signal of the uplink TCI state;associated with a timing advance group (TAG) that is applied to the uplink transmission;associated with a closed loop that is applied to the uplink transmission;associated with a target received power that is configured to the uplink transmission; orassociated with a specific value of a control resource set (CORESET) pool index.9.The method of any of claims 1-8, wherein the applied offset is at least:indicated by a downlink control information (DCI) to the uplink transmission, wherein a pathloss reference signal power offset is selected from a plurality of pathloss reference signal power offsets that are configured by a radio resource control (RRC) signaling or activated by a medium access control (MAC) control element (CE) ; orindicated by a MAC CE to the uplink transmission, wherein a pathloss reference signal power offset is selected from a plurality of pathloss reference signal power offsets that are configured by a RRC signaling.10.The method of any of claims 1-9, wherein a value of the pathloss estimation of the uplink transmission power is calculated using at least one of the following formulas:a power of a pathloss reference signal minus a higher layer filtered reference signal received power (RSRP) plus a pathloss estimation offset;a power of a pathloss reference signal plus a pathloss reference signal power offset minus a higher layer filtered RSRP; ora power of a pathloss reference signal minus a higher layer filtered RSRP minus a higher layer filtered RSRP offset.11.The method of any of claims 1-10, wherein the applied offset is associated with or configured to a sounding reference signal (SRS) resource set of a physical uplink shared channel (PUSCH) transmission, and wherein the SRS resource set is used for a codebook-based PUSCH transmission or a non-codebook-based PUSCH transmission.12.The method of any of claims 1-11, wherein the applied offset is associated with a set of power control parameters configured for a physical uplink control channel (PUCCH) transmission that is operated in frequency range 1 (FR1) .13.The method of any of claims 1-12, wherein the applied offset is associated with or configured to a sounding reference signal (SRS) resource set of a SRS transmission.14.The method of any of claims 1-13, wherein the applied offset is associated with a random access channel (RACH) configuration of a physical random access channel (PRACH) transmission.15.A method of wireless communication, comprising:transmitting, by a network device, a power control signaling; andreceiving, by the network device, an uplink transmission using an uplink transmission configuration indication (TCI) state, wherein a pathloss estimation of an uplink transmission power of the uplink transmission is determined by an applied offset according to the power control signaling.16.An apparatus for wireless communication, comprising a processor, wherein the processor is configured to implement a method recited in any one or more of claims 1 to 15.17.A computer readable program storage medium having code stored thereon, the code, when executed by a processor, causing the processor to implement a method recited in any one or more of claims 1 to 15.
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