77 results about "Antenna correlation" patented technology

Provided in the present disclosure are an information processing method, an apparatus, a network device and a terminal. The information processing method comprises: determining indication information related to an antenna; and by using dynamic signaling, transmitting to a terminal the indication information, the indication information being used for power saving of a network device.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may measure a first amount of reflected power associated with a first antenna of the UE and measure a second amount of reflected power associated with a second antenna of the UE. The UE may adjust an input power for the first antenna based at least in part on the first amount of reflected power or the second amount of reflected power and may perform a transmission via the first antenna using the adjusted input power for the first antenna. For example, the UE may increase the input power for the first antenna by an amount that is based at least in part on the first amount of reflected power.

Procedures, methods, architectures, apparatuses, systems, devices, and computer program products using wireless transmit / receive unit (WTRU) configured for sending first information indicating a set of one or more antenna port groups, wherein each antenna port group, of the set of one or more antenna port groups, is associated with at least one transmit antenna of the WTRU; receiving second information indicating at least one set of precoders; receiving third information indicating a precoder of the at least one set of precoders, a scaling value, and a phase value; and sending via at least one transmit antenna element associated with the at least one antenna port group, a transmission having at least one symbol based on the precoder, the scaling value associated with the at least one antenna port group and the phase value associated with the at least one antenna port group.

The technology disclosed herein relates to a multi-link device and methods, media, and systems associated with the multi-link device. The multi-link device can establish multiple wide area network (WAN) connections with multiple base stations. The multi-link device has multiple sets of antennas, and each WAN connection is associated with at least one of the multiple sets of antennas. The multi-link device also has a local area network (LAN) interface that is capable of establishing a plurality of LAN connections. The multi-link device can determine which of the WAN connections has a highest uplink bandwidth or a lowest uplink bandwidth. In some embodiments, the multi-link device ranks each of the WAN connections based on uplink bandwidth. Further, the multi-link device can transmit various sets of data (e.g., video data, image data, audio data, location data) to the multiple base stations via the WAN connections that are concurrently active.

A radar apparatus includes three or more transmission antennas, a processor, and a memory having instructions that, when executed by the processor, cause the processor to: apply a phase rotation amount corresponding to a Doppler shift amount and a code sequence to a transmission signal, and perform multiplexing transmission of the transmission signal from the three or more transmission antennas. Each of the three or more transmission antennas is associated with each of a plurality of combinations of the Doppler shift amount and the code sequence. Each of the plurality of combinations is different at least one of the Doppler shift amount and the code sequence. Doppler shift amounts of those of the plurality of combinations which are associated respectively with at least two transmission antennas of the three or more transmission antennas are a same Doppler shift amount.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a loss of coherence associated with the UE. The UE may perform at least one adjustment to a transmission parameter or a reception parameter based at least in part on the indication of the loss of coherence. For example, the adjustment to the transmission parameter may include adjusting a transmit power, adjusting a transmit frequency, adapting a transmission time, changing an antenna port, or a combination thereof. Additionally, or alternatively, the adjustment to the reception parameter may include refraining from joint channel estimation across a plurality of slots, adjusting a downscaling parameter or a frequency tuning associated with at least one reception antenna, refraining from blind decoding, or a combination thereof. Numerous other aspects are described.

Various aspects of the present disclosure generally relate to wireless communication. Some aspects more specifically relate to multiple input multiple output (MIMO) spinal code encoding schemes. In some aspects, a transmitter may encode a message in accordance with configuration information associated with a MIMO spinal code encoding scheme, resulting in a vector that includes multiple spinal symbols. The transmitter may further map the multiple spinal symbols to multiple transmit antennas, such as by distributing the multiple spinal symbols across multiple layers associated with the multiple transmit antennas and across one or more resource elements (REs) in accordance with the configuration information. The transmitter may transmit, using the multiple transmit antennas and the one or more REs, and a receiver may receive, using multiple receive antennas and the one or more REs, the multiple spinal symbols.

Aspects described herein relate to transmitting user equipment (UE) capability information related to a number of sounding reference signals (SRSs) to transmit for a number of antennas and a number of transmit chains at the UE, receiving a SRS configuration of SRS resources for transmitting the number of SRSs, transmitting the number of SRSs over the SRS resources, and receiving an antenna selection indication related to a set of one or more of the number of antennas to be associated to the number of transmit chains for performing antenna selection at the UE. Other aspects relate to receiving UE capability information, transmitting the SRS configuration, receiving the SRSs, and transmitting the antenna selection information.

An embodiment provides a measurement arrangement for characterizing a radio frequency arrangement comprising a plurality of antennas. Measurement arrangement comprises a dielectric waveguide slab with a plurality of frequency converting structures, arranged in or on the dielectric waveguide slab. Measurement arrangement further comprises a plurality of waveguide transitions arranged at different positions of the dielectric waveguide slab and are coupled to respective radio frequency components. Radio frequency components are configured to transmit and / or receive radio signals. Frequency converting structures are associated with respective antennas of the plurality of antennas, and are configured to perform a frequency conversion on signals received, resulting in frequency-converted signals. Frequency converting structures are further configured to couple respective antennas with the dielectric slab in a frequency converting manner to establish a frequency-converting coupling between the antennas and the plurality of waveguide transitions to cause a frequency-converting coupling between the antennas and the radio frequency components.

The invention discloses a sequence matching method of a transmitting antenna and electronic equipment. The method comprises the following steps: storing a first bitmap used for representing a signal detection result of each element in a first matrix corresponding to a reference transmitting antenna; determining a second element passing signal detection from a target matrix obtained by aggregating the ith group of second matrixes in the M groups of second matrixes; determining an echo signal matched with the second element from echo signals corresponding to the M transmitting antennas based on the target Doppler parameter interval, and obtaining a third element corresponding to the echo signal; determining that a target transmitting antenna corresponding to a target element is associated with a reference transmitting antenna under the condition that a first numerical value is found at a second position corresponding to the target element in third elements in the first bitmap; and determining the antenna sequence corresponding to each transmitting antenna by using the association relationship between the target transmitting antenna and the reference transmitting antenna. The technical problem that many memory resources are occupied in the prior art is solved.

Apparatus, methods, and computer program products for wireless communication are provided. An example method may include transmitting, to a network node, information associated with a first quantity of effective downlink transmit (Tx) antennas associated with the UE. The example method may further include receiving, from the network node, a transmission indicative of a set of precoding functions for a set of Tx antennas associated with the network node, where each precoding function of the set of precoding functions is associated with a respective group of multiple Tx antennas of the set of Tx antennas associated with the network node, and where a second quantity of precoding functions is smaller than or equal to the first quantity of the effective downlink Tx antennas. The example method may further include receiving, from the network node, a second transmission based on the set of precoding functions.

Techniques and apparatus for radio frequency (RF) exposure compliance based on spatial information of RF exposure contributions among antennas of a wireless device are described. An example method generally includes accessing RF exposure contribution information associated with a plurality of antennas of the wireless device. At least one time-averaging operation is performed for at least a first antenna, based on the RF exposure contribution information. A transmit power limit is determined for the first antenna, based on the at least one time-averaging operation. A signal is transmitted from the first antenna at a transmission power level determined based at least in part on the transmit power limit in compliance with an RF exposure limit.

Certain aspects of the present disclosure provide techniques for sending capability information associated with a plurality of antennas of the user equipment (UE), the capability information including a field that indicates whether each antenna group, of a plurality of antenna groups associated with the plurality of antennas, is coherent, wherein a first antenna group of the plurality of antenna groups is coherent and a second antenna group of the plurality of antenna groups is not coherent; and communicating using the first antenna group and the second antenna group in accordance with the capability information.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that configures a first band for a supplementary uplink (SUL), wherein the SUL is associated with a first antenna of the UE. The UE may receive, via a second antenna of the UE, a downlink reference signal on a second band, wherein the second band at least partially overlaps in frequency with the first band. The UE may switch the SUL to be associated with the second antenna, instead of the first antenna, based at least in part on a measurement associated with the downlink reference signal on the second band. The UE may transmit, via the second antenna, an SUL transmission on the first band. Numerous other aspects are described.

Methods and apparatus for radio frequency (RF) exposure compliance across antenna grouping transitions are described. An example method includes transitioning, during a run-time of a wireless device, from operating according to a first transmit scenario with a first set of antenna groups for a plurality of transmit antennas to operating according to a second transmit scenario with a second set of antenna groups, while maintaining compliance with an RF exposure limit across the transition. The transitioning includes determining the second set of antenna groups, such that an RF exposure history associated with the first set of antenna groups for the plurality of transmit antennas is maintained for the second set of antenna groups across the transition. The method also includes transmitting, from at least one transmit antenna in the second set of antenna groups, while operating according to the second transmit scenario.

An apparatus, a method, and a computer program product for carrier transmission are provided. An example method may include receiving, from a second wireless device, a broadcast communication indicating location information associated with the PUE, a target Rx signal power associated with an antenna of the PUE, and a power headroom relative to the target Rx signal power. The example method may also include transmitting a communication to the second wireless device to indicate to the PUE that the first wireless device is present based on the location information, the target Rx signal power, or the power headroom.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may select a first transmit power level associated with a first expected radiation power from antenna(s) of the UE. Selection of the first transmit power level is based at least in part on the first expected radiation power complying with a specific absorption rate (SAR) threshold. The UE may increase the first transmit power level to a second transmit power level associated with a second expected radiation power from the antenna(s) of the UE. The increase to the second transmit power level is based on application of an antenna efficiency metric associated with the antenna(s) of the UE to the second expected radiation power to determine a reduced expected radiation power. The UE may perform transmission(s) from the antenna(s) at the second transmit power level based on the reduced expected radiation power satisfying the SAR threshold.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that configures a first band for a supplementary uplink (SUL), wherein the SUL is associated with a first antenna of the UE. The UE may receive, via a second antenna of the UE, a downlink reference signal on a second band, wherein the second band at least partially overlaps in frequency with the first band. The UE may switch the SUL to be associated with the second antenna, instead of the first antenna, based at least in part on a measurement associated with the downlink reference signal on the second band. The UE may transmit, via the second antenna, an SUL transmission on the first band. Numerous other aspects are described.

Methods and apparatuses for dual Kalman filter (KF) based channel prediction of uplink SRS measurement in wireless communication systems. A method includes: receiving, from a user equipment (UE) via a set of antennas, channel measurement information and antenna delay values associated with the set of antennas; receiving, from the UE, an uplink sounding reference signal (SRS); applying the channel measurement information and the antenna delay values to a dual KF as an input signal; and estimating, based on the input signal to the dual KF, a set of parameters for a multipath channel model, wherein the multipath channel model is identified based on a channel response derived from the uplink SRS.

Aspects described herein relate to transmitting user equipment (UE) capability information related to a number of sounding reference signals (SRSs) to transmit for a number of antennas and a number of transmit chains at the UE, receiving a SRS configuration of SRS resources for transmitting the number of SRSs, transmitting the number of SRSs over the SRS resources, and receiving an antenna selection indication related to a set of one or more of the number of antennas to be associated to the number of transmit chains for performing antenna selection at the UE. Other aspects relate to receiving UE capability information, transmitting the SRS configuration, receiving the SRSs, and transmitting the antenna selection information.

The technology disclosed herein relates to a multi-link device and methods, media, and systems associated with the multi-link device. The multi-link device can establish multiple wide area network (WAN) connections with multiple base stations. The multi-link device has multiple sets of antennas, and each WAN connection is associated with at least one of the multiple sets of antennas. The multi-link device also has a local area network (LAN) interface that is capable of establishing a plurality of LAN connections. The multi-link device can determine which of the WAN connections has a highest uplink bandwidth or a lowest uplink bandwidth. In some embodiments, the multi-link device ranks each of the WAN connections based on uplink bandwidth. Further, the multi-link device can transmit various sets of data (e.g., video data, image data, audio data, location data) to the multiple base stations via the WAN connections that are concurrently active.

A system for enabling cellular properties in a broadcast satellite Set Top Box (STB) using a cellular network. The system includes a satellite receiver, a cellular antenna, and a satellite receiver STB. The satellite receiver receives broadcast signals from a satellite. The broadcast signals includes an encapsulated video feed. The cellular antenna receives cellular signals from a cellular tower. The cellular antenna directs the cellular signals to a cellular chipset. The satellite receiver STB is associated with the satellite receiver and the cellular antenna. The satellite receiver STB includes a STB circuit board for processing the broadcast signals from the satellite receiver to present video feed received from the satellite and for processing cellular signals from a cellular tower. The satellite receiver STB is configured to transmit the broadcast signals to end user broadcast devices and transmit the cellular signals to end user cellular devices.

A method for positioning includes transmitting, from a user equipment (UE), a UE capability message indicating a capability of the UE to process one or more positioning reference signals (PRSs) transmitted from one or more transmitting antennas and received at one or more receiving antennas of the UE; receiving, at the UE, assistance data based on the UE capability message, the assistance data including information for processing the one or more PRSs transmitted from the one or more transmit antennas; receiving, at one or more receive antennas of the UE, one or more PRSs from one or more transmit antennas; and obtaining one or more measurements based on the one or more PRSs, and associating each of the one or more measurements with one of the one or more transmitting antennas as a PRS source antenna and one of the one or more receiving antennas as a PRS reception.

This invention discloses a flexible beam optimization method and system for phased arrays based on phase-adaptive complex plane iterative rotation search. It primarily addresses the problem of severely reduced feasible solution space caused by linearizing non-convex lower bound constraints in existing array synthesis methods. The implementation scheme is as follows: initializing array antenna parameters; establishing non-convex constraints related to array solution requirements; linearizing the non-convex constraints to obtain convex constraints; adding corresponding phase changes to the convex constraints to construct relevant convex optimization subproblems; solving the convex optimization subproblems to obtain weighted solutions; calculating the required phase based on the weighted solutions and iteratively updating it to calculate the array antenna radiation pattern. This invention transforms the original non-convex problem into a convex problem through linearization approximation and avoids solution space reduction through adaptive phase iteration and rotation of the search space. It improves beam performance of array antenna synthesis while maintaining computational efficiency and can be used for signal detection or target recognition in various complex array synthesis scenarios.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may receive one or more uplink reference signals that are associated with a plurality of antennas at a user equipment (UE). The network node may transmit an indication of a network-node-based uplink antenna selection for the UE, the network-node-based uplink antenna selection being linked to specific precoding assigned to a future uplink transmission, the network-node-based uplink antenna selection being based at least in part on the one or more uplink reference signals. Numerous other aspects are described.

Antenna monitoring systems and methods can include, among other things, a transmitter near each of the antennas in a distributed antenna system (DAS). The transmitter can transmit an antenna identifier corresponding to that antenna, so that the various transmitters in the DAS each transmit different antenna identifiers. These antenna identifiers can be detected by a receiver and can be processed to determine whether any antenna identifiers are missing. If any expected antenna identifier is missing, the receiver can infer that the antenna or a component associated with the antenna (such as cabling) may have failed. The receiver can then output an indication or notification that may be accessed by maintenance personnel and / or emergency personnel to enable them to identify and repair the non-functioning antenna or component. The transmitter can transmit other data, such as environmental data, RF data, or the like, to facilitate additional or alternative monitoring functionality.

Procedures, methods, architectures, apparatuses, systems, devices, and computer program products using wireless transmit / receive unit (WTRU) configured for sending first information indicating a set of one or more antenna port groups, wherein each antenna port group, of the set of one or more antenna port groups, is associated with at least one transmit antenna of the WTRU; receiving second information indicating at least one set of precoders; receiving third information indicating a precoder of the at least one set of precoders, a scaling value, and a phase value; and sending via at least one transmit antenna element associated with the at least one antenna port group, a transmission having at least one symbol based on the precoder, the scaling value associated with the at least one antenna port group and the phase value associated with the at least one antenna port group.

Certain aspects of the present disclosure provide techniques for wireless communications. An example method includes receiving, from a network entity, transmit antenna correlation information associated with the network entity; performing an equalization operation based at least in part on one or more decimation factors, the one or more decimation factors being associated with the transmit antenna correlation information; and communicating with the network entity in accordance with the equalization operation.

Embodiments of the present disclosure provide method and apparatus for antenna calibration. A method implemented at a first network device. The method includes receiving a first radio signal generated by the first network device via a receiver connected to an antenna of the first network device. The method further includes receiving at least one second radio signal from at least one second network device via the antenna of the first network device. The method further includes determining an impairment related to the antenna of the first network device based on the received first radio signal and the at least one second radio signal. There is a line of sight (LOS) path between the antenna of the first network device and the antenna of each of the at least one second network device.