2840 results about "Sounding reference signal" patented technology

Logic may decode information on cross-link interference (CLI) measurement and report configuration received via a first downlink (DL) control information (DCI) from a first base station to comprise an identification of a communication resource within which to measure a sounding reference signal (SRS) or other uplink transmission and a definition for a CLI measurement report. Logic may measure the SRS or other uplink transmission based on the identification of the communication resource. Logic may generate the CLI measurement report based on measurement of the SRS or other uplink transmission. Logic may send the CLI measurement report. Logic may generate a CLI measurement and report configuration to comprise an identification of a communication resource within which to measure a SRS and a definition for a CLI measurement report. And logic may send the CLI measurement and report configuration via a DCI transmission to a first user equipment.

Disclosed are techniques for wireless communication. In an aspect, a reconfigurable intelligent surface (RIS) transmits a sounding reference signal (SRS) transmission request message to a base station serving a user equipment (UE), the SRS transmission request message including one or more SRS transmission properties to be used by the base station to configure the UE to transmit SRS, receives a response message from the base station, the response message indicating one or more SRS configurations the UE is configured to use to transmit SRS, the one or more SRS configurations based on the one or more SRS transmission properties, and measures a plurality of SRS transmissions from the UE with a plurality of receive beams to determine a best receive beam for receiving uplink transmissions from the UE, wherein the plurality of SRS transmissions is based on at least one SRS configuration of the one or more SRS configurations.

A method performed by a radio unit (RU) is provided. The method includes receiving, by the RU, sounding reference signals (SRSs), receiving, by the RU from a distributed unit (DU) via a fronthaul interface, a control plane (C-plane) message including SRS configuration information, performing, by the RU, channel estimation based on the SRSs and the SRS configuration information, and performing, by the RU, beamforming on the basis of the channel estimation.

According to some embodiments, a method performed by a wireless device comprises obtaining a sounding reference signal (SRS) resource configuration for 6 or 8 SRS ports and transmitting SRS according to the SRS resource configuration. In particular embodiments, the SRS resource configuration comprises an SRS resource for 6 or 8 SRS ports wherein the SRS resource is divided into at least two subsets, wherein each subset is associated with a different comb offset. In particular embodiments, the SRS resource configuration comprises two SRS resources. Each SRS resource supports up to 4 SRS ports. Transmitting SRS according to the SRS configuration comprises transmitting SRS using an 8 port codebook.

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure relates to: a communication technique merging IoT technology with a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, small business, security- and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. According to various embodiments of the present disclosure, a method performed by a base station in a wireless communication system comprises the steps of: receiving terminal capability report information from a terminal; transmitting, to the terminal, an upper layer parameter determined on the basis of the terminal capability report information; receiving, from the terminal, a sounding reference signal (SRS) determined by means of the upper layer parameter; determining downlink control information (DCI) for scheduling a physical uplink shared channel (PUSCH) on the basis of the SRS; transmitting a signal including the DCI to the terminal; and receiving the PUSCH and an uplink (UL) phase tracking reference signal (PTRS) from the terminal.

A terminal according to one aspect of the present disclosure includes: a control section that performs, for transmission of a reference signal for measurement (Sounding Reference Signal (SRS)) of an SRS resource of at least one of a plurality of SRS resources, control of whether to perform transmission or transmission in a different SRS resource, when a time difference between the plurality of SRS resources is smaller than a given value; and a transmitting section that transmits the SRS, based on a result of the control. According to one aspect of the present disclosure, it is possible to appropriately perform SRS transmission.

According to embodiments, a UE receives, from a network device, a configuration of a sounding reference signals (SRS) resource with 8 antenna ports, a transmission comb configuration for the SRS resource, and a cyclic shift (CS) configuration for the SRS resource. The transmission comb configuration indicates a comb value K. K is one of 2, 4, or 8. The transmission comb configuration further indicates a configured comb offset (k). k is an integer between 0 and K−1. The CS configuration indicates CS positions. The UE maps each port of the 8 antenna ports to corresponding resource elements (REs) in the frequency domain and a corresponding CS. The corresponding REs are a subset of a plurality of REs and on every K-th RE with an offset based on the configured comb offset (k) within an SRS transmission bandwidth. The UE transmits SRSs using the 8 antenna ports based on the mapping.

The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting higher data rates. A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes receiving, from a base station, configuration information including first information one a first sounding reference signal (SRS) resource set and a second SRS resource set, second information associated with an physical uplink shared channel (PUSCH) repeat transmissions, and third information associated with slot configuration, receiving, from the base station, downlink control information (DCI) scheduling a PUSCH, the DCI including a CSI request field triggering aperiodic channel state information (CSI) reporting, and transmitting, to the base station, a first PUSCH associated with the first SRS resource set and a second PUSCH associated with the second SRS resource set, wherein the slot configuration configured based on the third information includes a slot for uplink transmission of the UE, and a subband non-overlapping full duplex (SBFD) slot including a subband for downlink reception of the UE and a subband for the uplink transmission of the UE, and wherein, in case that a number of resource element (RE) allocated to a first repetition of repetitions of the first PUSCH is same with a number of RE allocated to a first repetition of repetitions of the second PUSCH, the aperiodic CSI reporting is multiplexed in the first repetition of the repetitions of the first PUSCH and the first repetition of the repetitions of the second PUSCH, respectively.

This disclosure describes systems, methods, and devices related to collision handling. A device may receive configuration for positioning sounding reference signal (SRS) with transmit (TX) frequency hopping for a positioning SRS transmission, including a switching time for an active bandwidth part (BWP). The device may determine, during a collision between the SRS and another uplink transmission, including the switching time to and from the active bandwidth part, whether to drop one or more SRS symbols. The device may transmit remaining non-colliding symbols of the positioning SRS transmission.

Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives a sounding reference signal (SRS) configuration, the SRS configuration including one or more parameters defining an SRS resource, receives a cyclic shift hopping parameter for SRS transmissions, and transmits an SRS on the SRS resource, the SRS configured according to at least the cyclic shift hopping parameter.

The system can send a radio resource control (RRC) message to user equipment (UE) to establish a sounding reference signal (SRS) mode for broadband cellular communications, where the SRS mode is periodic, and the communications are facilitated with carrier aggregation. The system can send a second message in a second format to the UE, where the second format differs from a RRC format, and the second message indicates changing a number of SRS positions for the primary cell. The system can send a third message in the second format to the UE, where the second message indicates the changing of the number of SRS positions for the secondary cell. The system can receive, from the UE, a fourth message that utilizes the number of SRS positions to convey SRS information. The system can save an indication of a channel quality that corresponds to the communications based on the SRS information.

A system can communicate broadband cellular communications with a user equipment. The system can send a radio resource control message to the user equipment to establish a sounding reference signal mode for the broadband cellular communications, wherein the sounding reference signal mode is a periodic mode. The system can send a second message in a second format to the user equipment, wherein the second format differs from a radio resource control format, and wherein the second message indicates changing a number of sounding reference signal positions. The system can receive, from the user equipment, a third message that utilizes the number of sounding reference signal positions to convey sounding reference signal information. The system can save an indication of a channel quality that corresponds to the broadband cellular communications based on the sounding reference signal information in the third message.

Disclosed are techniques for communication. In an aspect, a radio access network (RAN) node transmits, to a network entity, a set of machine learning positioning capabilities supported by the RAN node, wherein the set of machine learning positioning capabilities includes a list of identifiers of a set of machine learning positioning functionalities supported by the RAN node, wherein the set of machine learning positioning functionalities is associated with a set of machine learning models that support the set of machine learning positioning functionalities, and wherein each machine learning positioning functionality of the set of machine learning positioning functionalities is associated with one or more machine learning models of the set of machine learning models, and transmits, to the network entity, one or more measurements of one or more sounding reference signal (SRS) resources transmitted by a user equipment (UE).

Different antenna components of a device cause different biases in calculating a location of a user equipment (UE) based on reference signals from another device (which may be sounding reference signals from the UE or positioning reference signals from a base station). A device is configured to use different subsets of antenna components to calculate a positioning measurement. With each of the antenna components associated with a bias in calculating the positioning measurement, each subset of antenna components is associated with a bias in calculating the positioning measurement. The device is configured to generate and report an angle error group (AEG) report that is associated with the positioning measurements calculated (such as an AEG report including positioning measurements and identifiers indicating the antenna components used). The AEG report is used by a location server to identify the antenna components to be used for UE positioning operations.

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a base station. The base station receives a sounding reference signal (SRS) from a user equipment (UE). The base station estimates an uplink (UL) channel state information (CSI) based on the received SRS. The base station monitors the estimated UL CSI to track changes. The base station determines whether to update or switch an artificial intelligence (AI) / machine learning (ML) model used for downlink (DL) CSI compression based on the monitoring of the estimated UL CSI.

Embodiments of the present disclosure relate to a method and apparatus for multiple transmit-receive points (multi-TRP) transmission. According to an embodiment of the present disclosure, a method can include: receiving first configuration information for uplink phase tracking reference signal (PT-RS) and second configuration information indicating a plurality of sounding reference signal (SRS) resource sets, wherein each of the plurality of SRS resource sets is associated with at least one physical uplink shared channel (PUSCH) repetition; for each PUSCH repetition, determining a number of PT-RS ports for transmitting the uplink PT-RS; and transmitting two or more PUSCH repetitions. Embodiments of the present disclosure can resolve the issues caused by the imbalance numbers of PT-RS ports between different TRPs.

Disclosed are a method and device for transmitting / receiving sounding reference signals in a wireless communication system. A method for transmitting sounding reference signal (SRS) according to an embodiment of the present disclosure comprises the steps of: receiving configuration information related to N (N is a natural number) SRS resource sets from a base station; receiving, from the base station, downlink control information (DCI) for triggering the transmission of SRSs on M (M≤N, M is a natural number) SRS resource sets among the N SRS resource sets; and transmitting the SRSs on SRS resources of each of the M SRS resource sets to the base station. The M SRS resource sets may each be related to a different panel of the terminal.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to transmit, to a base station, capability signaling indicating a quantity of sounding reference signal (SRS) ports supported by an antenna panel of a set of antenna panels at the UE. The UE may receive control signaling indicating an SRS configuration including multiple SRS sets, multiple SRS resource lists, or both, where the multiple SRS sets or multiple SRS resource lists are associated with respective quantities of supported SRS ports. The UE may then transmit, to the base station and based on the control signaling, a measurement report indicating a quantity of sounding SRS, and transmit an SRS to the base station in accordance with the SRS configuration and the indicated quantity of SRS ports.

Systems and methods for networks having user equipment (UE) that can perform measurement / reporting of received signals and a sounding reference signal (SRS) transmission that is part of an SRS antenna port switching procedure are described herein. In some circumstances, the measurement and the SRS antenna port switching procedure overlap on one or more symbols. Across various embodiments, the UE prioritizes one of the measurement and the SRS antenna port switching procedure based on one or more of a scheduling type (periodic, semi-persistent, aperiodic) of the measurement, a scheduling type of a channel state information (CSI) report for a measurement result for the measurement, and / or a scheduling type of the SRS transmission of the SRS antenna port switching procedure. Networks that avoid overlaps by scheduling SRS transmissions away from UE signal measurements, or transmissions of signals to be measured away from UE SRS antenna port switching procedures, are also described.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information associated with a first sounding reference signal (SRS) resource set and a second SRS resource set. The UE may receive downlink control information (DCI) that schedules a spatial division multiplexing (SDM) physical uplink shared channel (PUSCH) communication, the DCI including a plurality of fields associated with the SDM PUSCH communication. Numerous other aspects are provided.

A wireless device receives one or more radio resource control (RRC) configuration parameters indicating an index for one or more sounding reference signal (SRS) resources. A first value of the index indicates to apply a first transmission configuration indicator (TCI) state associated with a first control resource set (coreset) pool index to first transmissions via the one or more SRS resources. A second value of the index indicates to apply a second TCI state associated with a second coreset pool index to second transmissions via the one or more SRS resources. The wireless device transmits, via the one or more SRS resources, an SRS using a TCI state, among the first TCI state and the second TCI state, determined based on the index.

The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting higher data transmission rates, and discloses a method for transmitting a sounding reference signal (SRS) in a wireless communication system are provided. The method includes receiving configuration information including a first configuration for SRS resource sets, identifying, based on the first configuration, that a usage of the SRS resource sets is configured to antenna switching, and transmitting the SRS, based on x antennas among y reception antennas of an electronic device, wherein y is a natural number of 6 or larger, x is a natural number of y or smaller, and the number of the SRS resource sets associated with the SRS transmission may be determined based on whether capability information about the electronic device associated with the resource type of the SRS is reported in the time domain.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure relates to wireless communication and, more specifically, to a method of sounding reference signal transmission. The technical result consists in reducing the processing complexity for SRS generation and transmission at the base station, increasing the interference immunity of SRS transmission, and enabling dynamic switching between different SRS sequence configurations. A method of sounding reference signal (SRS) transmission from the user equipment (UE) to the base station (BS) comprises: configuring, at the base station, transmission comb-specific SRS sequences; indicating SRS transmission from the user equipment in accordance with said configuration; generating, in the user equipment, an SRS using at least one said transmission comb-specific SRS sequence, and transmitting the SRS from the user equipment to the base station.

A wireless device receives one or more radio resource control (RRC) messages indicating: two control resource set (coreset) group indexes; one or more sounding reference signal (SRS) resource sets; and a respective parameter, for each SRS resource set, for determining a transmission configuration indication (TCI) state among TCI states associated with the two coreset group indexes. The wireless device receives one or more control commands indicating: a first TCI state for a first coreset group index; and a second TCI state for a second coreset group index. The wireless device determines, based on a parameter associated with an SRS resource set, a TCI state among the first TCI state and the second TCI state. The wireless device transmits, via an SRS resource in the SRS resource set, an SRS using a spatial transmission filter determined based on a reference signal of the TCI state.

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a carrier aggregation (CA) configuration including at least a primary component carrier (PCC) and a secondary component carrier (SCC), where the PCC is configured for frequency domain duplexed (FDD) communications and the SCC is configured for time domain duplexed (TDD) communications. To determine whether sounding reference signal (SRS) carrier switching (e.g., between the PCC and the SCC) is appropriate, the UE may monitor performance metrics. If the performance metrics fail to satisfy corresponding thresholds, the UE may reduce an SRS periodicity. For instance, the UE may request that a network entity reduce the SRS periodicity. Alternatively, the UE may reduce a quantity of antennas used for the SRS transmissions. In other examples, the UE may initiate an interchange between the PCC and the SCC such that SRS carrier switching is no longer utilized.

Systems, methods, and instrumentalities are disclosed herein associated with the estimation of an obstacle location. A WTRU may receive configuration information regarding reference signal (RS) resources, and transmit an RS (e.g., a sounding reference signal for positioning) using a configured resource. The WTRU may receive a signal reflected from an obstacle based on the transmission of the RS and the WTRU may perform a measurement of the reflected signal. The WTRU may report a result of the measurement to a network device to assist the network device with determining the location of the obstacle.

A resource mapping method for a reference signal (RS) is provided. The method includes the following. A terminal device receives configuration information transmitted by a network device. The terminal device determines a first transmission comb offset corresponding to each of L sounding reference signal (SRS) antenna ports in an SRS resource, according to the configuration information. The first transmission comb offset is used to determine a frequency-domain starting position corresponding to each of the L SRS antenna ports, and a value of L is an integer greater than 4.

Embodiments are disclosed for capability reporting for antenna switching, AS, sound reference signals, SRS. A user equipment (UE) can transmit a capability report for AS SRS that includes a plurality of receive antenna (e.g., six or eight receive antenna), and receive SRS instructions based on the capability report. The UE can transmit a first temporary capability reduction for a duration, and transmit a first SRS according to the first temporary capability reduction and the SRS instructions, while maintaining phase continuity. To maintain phase continuity, the UE can calibrate one or more SRS ports participating in the AS SRS to transmit with substantially a same transmit power. The UE can determine that a second SRS overlaps an other transmission in a time domain, determine that the other transmission has an absolute priority over the second SRS, and transmit the other transmission but not the second SRS.

Methods and apparatuses are disclosed for flexible reconfiguration of the sounding reference signal (SRS). In one embodiment, a method implemented in a network node includes signaling a sounding reference signal (SRS) configuration, the SRS configuration including an SRS configuration parameter that indicates whether to use one of a staggered comb and a non-staggered comb for an SRS transmission; and receiving the SRS transmission according to the one of the staggered comb and the non-staggered comb indicated by the SRS configuration parameter. In one embodiment, a method implemented in a WD includes receiving a SRS configuration, the SRS configuration including an SRS configuration parameter that indicates whether to use one of a staggered comb and a non-staggered comb for an SRS transmission; and transmitting the SRS transmission according to the one of the staggered comb and the non-staggered comb indicated by the SRS configuration parameter.

A method applied to a network device includes: sending configuration information to a terminal device, where the configuration information indicates M sounding reference signal (SRS) resource sets, the M SRS resource sets include X first SRS resource sets and Y second SRS resource sets, the X first SRS resource sets include at least one first SRS resource, the Y second SRS resource sets include at least one second SRS resource, a time domain resource corresponding to the at least one first SRS resource is a subband full duplex (SBFD) type time unit, and a time domain resource corresponding to the at least one second SRS resource is a non-SBFD type time unit; and receiving an SRS from the terminal device based on the configuration information.