38 results about "Open loop power control" patented technology

A communication method, apparatus, and system. First information is received, where the first information is usable to indicate a first open-loop power control parameter and a second open-loop power control parameter. A first power and a second power are determined based on the first information, where the first open-loop power control parameter usable for determining the first power is different from the second open-loop power control parameter usable for determining the second power. The first power is a transmit power of a first PUSCH, the second power is a transmit power of a second PUSCH, a symbol occupied by the first PUSCH is an SBFD symbol, and a symbol occupied by the second PUSCH is a non-SBFD symbol. The first PUSCH is sent on a first BWP by using the first power. The second PUSCH is sent on the first BWP by using the second power.

A method and apparatus for power control for distributed wireless communication is disclosed including one or more power control loops associated with a wireless transmit / receive unit (WTRU). Each power control loop may include open loop power control or closed loop power control. A multi-phase power control method is also disclosed with each phase representing a different time interval and a WTRU sends transmissions at different power levels to different set of node-Bs or relay stations during different phases to optimize communications.

Certain aspects of the present disclosure provide techniques for obtaining a set of input parameters associated with an open-loop power control (OLPC) parameter determination; and transmitting a communication using one or more OLPC parameters, wherein the one or more OLPC parameters are based on the set of input parameters and the OLPC parameter determination, and wherein the one or more OLPC parameters are associated with at least one of a quality of service or an energy allocation.

Systems and methods for dynamic Pathloss Reference Signal (PL-RS) update for Uplink (UL) only Transmission Configuration Indication (TCI) states are provided. In some embodiments, a method performed by a User Equipment (UE) for determining UL transmission power for an UL channel or signal includes: receiving a configuration for a first TCI state, where the first TCI state is associated with a PL-RS; determining to update the PL-RS; and performing an UL transmission where the transmit power is based on at least the updated PL-RS. In this way, dynamic updates are enabled of the PL-RS associated to the UL-TCI state used by the UL-only node. Accordingly, accurate pathloss estimation and open-loop power control can be performed by UE for communication towards a UL-only node. Some solutions can enable automatic update (e.g., without additional L1 / L2 signaling) of the PL-RS associated with the UL-TCI state by an association to the PL-RS of the activated DL-TCI state.

The invention provides a transmitting power adjusting method, a transmitting power adjusting device and a terminal. The method is applied to a terminal, and comprises the following steps: determining the minimum real sending times of transmission blocks according to hybrid automatic reselection (HARQ) feedback of N transmission blocks, N being a positive integer; determining a transmitting power adjustment amount according to the minimum real sending frequency of the transmission block and the target sending frequency of the transmission block; determining a third transmitting power according to the maximum transmitting power supported by the terminal, a first transmitting power calculated through open-loop power control, a current second transmitting power and the transmitting power adjustment amount; wherein the third transmitting power is used for transmitting a transmission block after the N transmission blocks. According to the scheme, the transmitting power is adjusted based on the HARQ feedback, and the method and the device can be suitable for application scenes with interference.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive random access configuration information that indicates a set of target power parameters and a set of power offset parameters. The set of target power parameters may be associated with a first slot type or a second slot type, and the set of power offset parameters may be associated with the first slot type or the second slot type. The UE may transmit a random access message during a random access occasion of the first slot type according to a first target power parameter of the set of target power parameters and a power ramping parameter.

Provided are a transmitting parameter determination method, an electronic device, an apparatus and a medium. The transmitting parameter determination method includes: determining a power control parameter of physical uplink shared channel (PUSCH) transmission according to association information between a sounding reference signal resource indicator (SRI) and a PUSCH power control parameter. The power control parameter of the PUSCH transmission includes at least one of an open-loop power control parameter of a PUSCH, a closed-loop power control parameter of a PUSCH, or a pathloss measurement parameter of a PUSCH.

Power control enhancements are discussed herein for the case of using a single downlink control information (DCI) to schedule a simultaneous physical uplink shared channel (PUSCH) transmitted on separate antenna panels of a user equipment (UE). In some embodiments, the DCI includes one or more sounding reference signal (SRS) resource indicators (SRIs) that are applied with respect to a power control list of one or more SRI indices for the antenna panel to determine an open loop transmit power factor for each of the two simultaneous PUSCHs. In some embodiments, the DCI includes one or more transmit power control (TPC) commands that are applied with respect to a stored closed loop transmit power factor for the antenna panel to determine a closed loop transmit power factor for each of the two simultaneous PUSCHs. Dynamic point selection (DPS) usage in these contexts is also discussed. Power scaling for simultaneous PUSCH is also discussed.

The apparatus may be a UE configured to receive a configuration of two or more open loop power values in one or more open loop power control parameter sets, each open loop power value of the two or more open loop power values associated with a different duplex mode. The apparatus may also be configured to receive an indication of an open loop power value of the two or more open loop power values in the one or more open loop power control parameter sets and transmit an uplink transmission with a transmission power based on the open loop power value in the one or more open loop power control parameter sets.

The application discloses a kind of satellite mobile communication system adaptive power control methods, this method is: first, the current service channel signal and noise ratio is measured to the service channel burst of local end and predicts the channel quality after long delay;Then local end enters closed loop power control procedure, judge whether to the receiving opportunity of power control channel along with road, if to the power control channel along with road opportunity, then calculate the attenuation value of transmitting power of opposite end, the attenuation value of transmitting power of local end is calculated using closed loop power control;Then using open loop power control correction local end this time transmitting power;Finally, according to the lower limit of system set transmitting power value and the upper limit of transmitting power value, the amplitude limiting and quantization of local end this time transmitting power are carried out, and the transmitting power level is set according to the power of quantization.The application improves the performance of satellite mobile communication system power control, improves system communication capacity and communication quality.

Methods, systems, and devices for wireless communications are described. The described techniques may enable a user equipment (UE) to determine a transmission power for uplink messages in uplink dense deployment. For example, the UE may receive a medium access control-control element (MAC-CE) message indicating transmit power control (TPC) information for one or more uplink messages to an uplink-dedicated network entity. For example, the MAC-CE message may indicate a close loop power control parameter, a pathloss offset, or an open loop power control parameter. Additionally, or alternatively, the UE may receive a downlink control information (DCI) message indicating a pathloss offset change or a relative open loop power control parameter change. Additionally, or alternatively, the UE may receive an indication of a reference signal received power (RSRP) associated with an uplink reference signal, and may calculate a pathloss of an uplink channel based on the RSRP.

The present disclosure relates to power control for multiple uplink transmissions. Apparatuses, methods, and systems are disclosed for transmission power control. One method includes receiving a first configuration indicating a plurality of bandwidth parts on a first serving cell and configuration information corresponding to the plurality of bandwidth parts, wherein the configuration information includes an open loop power control configuration, a closed loop power control configuration, or a combination thereof corresponding to each of the plurality of bandwidth parts. The method includes receiving scheduling information for a first uplink transmission on a first bandwidth part of the plurality of bandwidth parts. The method includes determining a first transmission power for the first uplink transmission based on the configuration information and the scheduling information. The method includes performing the first uplink transmission at the first transmission power.

The present disclosure relates to an enhancement method, particularly for sounding reference signal (SRS) power control for multi-panel transmission. Generally, when performing physical uplink shared channel (PUSCH) transmission simultaneously, two user equipment (UE) antenna panels are required to be used. Different panels may observe different pathloss measurements and / or experience different channel conditions. Thus, power control enhancement techniques are disclosed herein to address per panel power control, including: open loop power control (OLPC) SRS power control enhancement; closed loop power control (CLPC) SRS power control enhancement is carried out; and various MAC CE enhancements for simultaneously updating one or more SRS resource sets. An enhancement method may include receiving, at a UE, a configuration of at least one (and preferably two) SRS resource sets for codebook (and / or non-codebook based) PUSCH transmission (wherein, for example, the SRS resource sets include independently configurable power control parameter sets); and then transmitting the multi-panel transmission to the at least one base station according to the configured SRS resource set.

Methods and systems for operating in a WLAN are provided. Methods and systems for transmit power control (TPC) schemes are disclosed. In one embodiment, an access point (AP) can send a trigger frame to one or more stations (STAs) for synchronization and scheduling of uplink (UL) multi-user (MU) transmissions. The trigger frame can contain an open loop power control index 1 and a power adjustment index 2. The one or more STAs can use the indicated AP transmit power and receive power to estimate path loss to set a baseline power. The one or more STAs can adjust their transmit power to the target receive power indicated at the AP in the UL transmission period.

A sidelink communication method, performed by a first terminal, may comprise: determining a first power value of a first control channel for transmitting control information for sidelink communication based on open-loop power control; transmitting the control information on the first control channel having the first power value; in response to receiving a response signal corresponding to the control information, determining a second power value of a first data channel for transmitting data; and transmitting a second control channel and the first data channel in one predetermined slot for the sidelink communication, wherein a third power value of the second control channel and the second power value of the first data channel are determined based on at least a power value of the first control channel.

The present disclosure relates to an open-loop power control method, device and storage medium for uplink PUSCH. The open-loop power control method for uplink PUSCH is applied to a network device, comprising: in response to sending first indication information and the first indication information not containing an SRI indication domain, configuring and determining the open-loop power control parameters of one or more TRPs used by a terminal when facing multiple TRP cooperation to send PUSCH, wherein the open-loop power control parameters include corresponding open-loop power boosting values; the first indication information is used to indicate the open-loop power boosting values used when multiple TRP cooperation is used to send PUSCH, wherein the open-loop power boosting values used when sending PUSCH correspond to different cooperation TRPs for sending PUSCH. Through the present disclosure, the control of the open-loop power in the PUSCH enhancement based on multiple TRPs is realized.

This disclosure provides systems, methods and apparatus for partitioning a physical sidelink shared channel (PSSCH) into multiple shortened PSSCHs (sPSSCHs) within a slot and selecting a transmit power for each sPSSCH. In one aspect, a transmitting user equipment (UE) may select the transmit power for each sPSSCH in accordance with an open loop power control operation. In some examples, the transmitting UE may select a common transmit power for each sPSSCH. Alternatively, the transmitting UE may perform independent power control operations for each sPSSCH and may cap variation in transmit power across sPSSCHs as a result of employing lower and upper bound transmit powers. Additionally, or alternatively, the transmitting UE may provide a default beta offset for the set of receiving UEs via sidelink control information (SCI) part one (SCI-1) and may provide beta offset updates via each SCI part two (SCI-2) transmission in the multiple sPSSCHs.

A method for operating a user equipment (UE) includes receiving at least one of a configuration of a first group of one or more downlink (DL) signals, a configuration of a second group of one or more open-loop power control (PC) parameters, a configuration of a third group of one or more closed-loop PC parameters, or a configuration of a fourth group of one or more loop states, receiving a configuration of a PC setting, wherein the PC setting is associated with at least one of a subset of the first group, a subset of the second group, a subset of the third group, or a subset of the fourth group, selecting a transmit power level in accordance with the PC setting and a pathloss, wherein the pathloss is determined in accordance with a DL reference signal (SS) and a synchronization signal (SS).

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an open loop power control configuration for a physical uplink shared channel (PUSCH) communication, wherein the open loop power control configuration includes rules for one or more sounding reference signal (SRS) resource sets, each SRS resource set being associated with one or more of a half-duplex mode or a full-duplex mode. The UE may transmit the PUSCH communication in accordance with the open loop power control configuration. Numerous other aspects are described.

The present disclosure relates to an open loop power control method, an apparatus, and a storage medium for uplink PUSCH. The open loop power control method for uplink PUSCH is applied to a network device, and includes the steps of: sending first indication information; and in response to the absence of an SRI indication field in the first indication information, setting and determining open loop power control parameters of one or more TRPs used by the terminal when the terminal transmits a PUSCH toward a multi-coordinated TRP, the open loop power control parameters including corresponding open loop power boost values, the first indication information indicating an open loop power boost value used when transmitting a PUSCH toward a multi-coordinated TRP, and the open loop power boost value used when transmitting a PUSCH corresponds to a different coordinated TRP transmitting a PUSCH. The present disclosure realizes open loop power control in PUSCH extension based on multi-TRP.

Methods, systems, and devices for wireless communications are described. The described techniques may enable a user equipment (UE) to determine a transmission power for uplink messages in uplink dense deployment. For example, the UE may receive a medium access control-control element (MAC-CE) message indicating transmit power control (TPC) information for one or more uplink messages to an uplink-dedicated network entity. For example, the MAC-CE message may indicate a close loop power control parameter, a pathloss offset, or an open loop power control parameter. Additionally, or alternatively, the UE may receive a downlink control information (DCI) message indicating a pathloss offset change or a relative open loop power control parameter change. Additionally, or alternatively, the UE may receive an indication of a reference signal received power (RSRP) associated with an uplink reference signal, and may calculate a pathloss of an uplink channel based on the RSRP.

The present disclosure relates to an open-loop power control method, apparatus, and storage medium for uplink PUSCH. The open-loop power control method for uplink PUSCH includes: configuring and determining open-loop power control (OLPC) parameters required by a terminal, where the OLPC parameters include power boost parameters corresponding to one or more transmit-receive points (TRPs); sending first indication information, where the first indication information is used to indicate the power boost parameters used when multiple TRPs cooperate to send PUSCH, and where the power boost parameters used when sending PUSCH correspond to different cooperating TRPs for sending PUSCH. Through the present disclosure, adjustment of power boost parameters for PUSCH transmission by multiple TRPs can be achieved.

Various aspects of the present disclosure generally relate to wireless communications. Some techniques and apparatus described herein provide a solution to ambiguity regarding the determination of an open-loop power control value (e.g., a P0 value) for a user equipment configured with at least two downlink control information formats, one of which is configured with a sounding reference signal resource indicator (SRI) field and the other is not configured with an SRI field. Numerous other aspects are provided.

The present disclosure relates to an open-loop power control method, apparatus, and storage medium for uplink unscheduled PUSCH. The open-loop power control method for uplink unscheduled PUSCH includes: configuring and determining open-loop power boost parameters corresponding to one or more TRPs; sending indication information, where the indication information is used to indicate the open-loop power boost parameters of the unscheduled PUSCH configuration adopted for single-TRP independent transmission or multi-TRP cooperative transmission of a transport block TB. Through the present disclosure, control over the open-loop power boost parameters of the unscheduled PUSCH configuration adopted for single-TRP independent transmission or multi-TRP cooperative transmission of TB can be achieved, and thus interference control can be performed to ensure the reliability of communication services.

A wireless transmit-receive unit (WTRU) transmits a first SL positioning reference signal (SL-PRS) using an open loop power control (OLPC) formula having a sidelink (SL) or downlink (DL) path loss parameter, and if a reference signal received power (RSRP) measured and transmitted by a peer-to-peer WTRU in response to receiving the first SL-PRS is below a configured threshold RSRP associated with QoS of a positioning service. If so, it is determined that a power offset is applied to the second SL-PRS as a function of QoS of the positioning service. Additional embodiments are disclosed.

Embodiments of the present application disclose a method and a base station for uplink open loop power control on the side of the base station. The method comprises: determining a power compensation coefficient β of a nominal power of each user terminal (UE) based on a link state between each UE and the base station when the UE initially accesses; and determining the nominal power of each UE currently used in a cell by using a calculation expression, comprising: wherein, P O_UE_PUSCH,b,f,c (j) is the nominal power of the UE, β is the power compensation coefficient, Pmax is a maximum value of the nominal power of the UE, and j is a configuration index.

Disclosed are methods and apparatuses for user equipment (UE) transmission power control. An embodiment of the subject application provides a UE including: calculate a pathloss parameter based at least on an orientation of the UE to a reference location; and perform orientation-based open loop power control (OLPC) based at least partly on a first parameter, a second parameter, and the pathloss parameter, wherein the first parameter and the second parameter are received, with the wireless transceiver, from a serving base station (BS).

Embodiments of the present application are related to a method and apparatus for PUSCH transmission with repetitions. An exemplary method includes: receiving DCI scheduling a plurality of repetitions of a PUSCH transmission, wherein there is at least one open-loop power control parameter set indication in the DCI; receiving configuration information associated with the PUSCH transmission, indicating: a first and a second SRS resource sets, a mapping pattern, and at least one list of P0-PUSCH-Set, wherein a first part of the plurality of repetitions is associated with the first SRS resource set and a second part of the plurality of repetitions is associated with the second SRS resource set according to the mapping pattern: and transmitting the first part and second part of the plurality of repetitions according to a first P0 value and a second P0 value respectively determined based on the received DCI and configuration information.

The disclosure relates to enhancements for open loop power control for ATG UEs. In some embodiments, a user equipment (UE) is provided, the user equipment (UE) comprising: at least one antenna; at least one radio coupled to the at least one antenna; and a processor coupled to the at least one radio. The processor is configured to perform location-based open loop power control, including: receiving, from a base station, a location and an antenna gain pattern of the base station; determining the position of the UE; and determining an initial transmit power of the UE for the location-based open loop power control based on the location of the UE, the location of the base station, and the antenna gain pattern of the base station.

A wireless transmit receive unit (WTRU) uses an open loop power control (OLPC) formula with sidelink (SL) or downlink (DL) pathloss parameters to transmit a first SL positioning reference signal (SL-PRS) and determines to apply a power offset as a function of the QoS of the positioning service for a second SL-PRS, QoS if a reference signal received power (RSRP) measured and transmitted by a peer WTRU in response to receiving the first SL-PRS is below a configured threshold RSRP associated with the QoS of the positioning service. Additional embodiments are disclosed.