360 results about "Wireless systems" patented technology

A method and apparatus for multi-link device (MLD)-based roaming in a wireless LAN system are disclosed. The method performed by a first STA in a wireless LAN system comprises the steps of: receiving, from a first access point (AP) belonging to a first group, announcement information including first information related to whether or not an addition of at least one link is supported for the first STA; transmitting, to the first AP, a request frame including a link ID of a second AP belonging to a second group; and receiving, from the first AP, a response frame including the link ID of the second AP, wherein the request frame may include second information requesting an addition or deletion of a link between the first STA and the second AP.

Systems, methods, and instrumentalities are described for handling positioning reference signals in a wireless communication system. The positioning reference signals may be assigned priorities that may be used to facilitate various operations of a wireless transmit / receive unit (WTRU) such as positioning related services, collision avoidance, measurement and reporting, etc. The WTRU may be configured with multiple muting patterns associated with the positioning reference signals and may switch between different muting patterns based on the priorities of the positioning reference signals and / or other downlink (DL) or uplink (UL) transmissions that may overlap or collide with the positioning reference signals.

The present specification proposes NDPA frame formats supported in a next generation wireless LAN system. According to one embodiment of the present specification, the NDPA frame formats may include common information for sensing. Here, the common information may be included in a special user information field. According to another embodiment of the present specification, the NDPA frame formats may use an existing NDPA frame format.

Disclosed are a method and device for transmission or reception on a channel with respect to a wide bandwidth in a wireless LAN system. The method performed by a first station (STA) in a wireless LAN system according to an embodiment of the present disclosure may include the steps of: generating a PPDU within a bandwidth belonging to a predefined frequency band; and transmitting the PPDU on a predetermined channel corresponding to a channel width smaller than the bandwidth.

The embodiment of the invention relates to the field of unmanned aerial vehicles, and provides a dynamic game-based air-ground wireless system security deployment and transmission scheme generation method and device and a storage medium, and the method comprises the steps: obtaining an initial model parameter and an event occurrence sequence, and taking a reverse sequence of the event occurrence sequence as a model construction sequence; determining that a planner takes expectation maximization of a weighted value of the transmission cost and the secrecy rate as a planning target, and determining that an eavesdropper takes eavesdropping rate maximization as an eavesdropping target; according to a model construction sequence, a planning target and an eavesdropping target are taken as model construction targets, and a three-stage dynamic game model is constructed according to the initial model parameters; and solving the three-stage dynamic game model based on a two-stage optimization algorithm, and generating a security deployment and transmission scheme of the air-ground wireless system according to target model parameters. By adopting the method, the security of unmanned aerial vehicle data transmission after deployment can be improved, the deployment efficiency is improved, and the deployment effect is improved.

Aspects of the present disclosure provide methods, apparatuses, devices and systems for facilitating energy savings in a wireless network system, such as a user equipment (UE) centric –cell free (UC-CF) wireless system. By virtue of aspects of the present disclosure, network devices may be dynamically turned on / off so that energy usage may be effectively reduced at both the network side and the UE side without sacrificing performance. A network device may transmit information of a first set of cooperation network devices to the UE. The network device may determine at least one target network side device which belongs to the first set of cooperation network side devices. The network device may transmit, to the UE, an indication of the at least one target network device via lower layer signaling. The UE may establish a first connection with the at least one target network device.

A wireless transmit / receive unit (WTRU) may receive a first set of simultaneous uplink (UL) grants for transmitting first simultaneous transmissions using a first set of two or more beams. The WTRU may transmit a first power headroom report (PHR) including a first power sharing indication. The first power sharing indication may indicate a first power sharing status for the first simultaneous transmissions. The WTRU may receive a second set of simultaneous UL grants for transmitting second simultaneous transmissions. The second simultaneous transmissions may be transmitted using a second set of two or more beams. The WTRU may determine a second power sharing status for the second simultaneous transmissions. The WTRU may transmit a second PHR when the determined second power sharing status is different than the first power sharing status.

Methods, devices, and systems for communication by a wireless transmit / receive unit (WTRU) associated with a source cell. The WTRU is configured with a conditional reconfiguration which includes a trigger condition and a configured target cell. The WTRU detects an occurrence of an impairment event resulting in impairment to operation of the WTRU in the source cell. If the impairment event satisfies the trigger condition, a reconfiguration is performed with the configured target cell. If the impairment event does not satisfy the trigger condition, a target cell is selected based on a cell selection procedure, and if the WTRU is configured with a conditional reconfiguration for the selected target cell, a reconfiguration is performed with the selected target cell; and if the WTRU is not configured with a conditional reconfiguration for the target cell, a reestablishment is performed with the selected target cell.

In some implementations, a process implemented in a receiver device may include receiving a signal including one or more DMRS resource elements. The process may include synchronizing the received signal in the time domain, demodulating OFDM symbols of the signal, obtaining a first resource grid from the demodulated OFDM symbols, and performing multi-layer channel estimation utilizing the DMRS resource elements and the first resource grid to generate an estimate of a first channel matrix. Further, the process may include equalizing the first resource grid using the first channel matrix to obtain an equalized resource grid for each of a plurality of transmitted layers. In addition, the process may include de-interleaving, de-mapping, demodulation, and descrambling of the equalized resource grid for each of the plurality of transmitted layers to obtain LLR for a plurality of coded blocks, and channel decoding of the LLR to output a plurality of reassembled code-blocks.

Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for measurements in wireless systems. A Wireless Transfer / Receive Unit, WTRU, receives information indicative of an uplink, UL, subband, SB, receives an indication to perform a measurement on a first set of resource blocks, RBs, and a first set of symbols, wherein the first set of symbols include a first one or more subband non-overlapping full duplex, SBFD, symbol, on condition that the first set of RBs includes both RBs in the UL SB and RBs outside the UL SB, determines a first measurement for the RBs in the first set of RBs that are in the UL SB and at least one additional measurement for at least one RB in the first set of RBs that are outside the UL SB, and transmits a message including the first measurement and the at least one additional measurement.

A method and device for transmitting an EHT PPDU in a wireless LAN system is proposed. Specifically, a transmission STA generates an STF signal for a 320 MHz band. The transmission STA transmits an EHT PPDU including the STF signal to a reception STA. The STF signal is generated on the basis of an EHT STF sequence. The EHT STF sequence is a first sequence in which preconfigured sequence M is repeated, and is defined as {M 1 −M 0 −M 1 −M 0 −M −1 M 0 −M 1 −M 0 −M −1 M 0 M −1 M 0−M −1 M 0 −M 1 −M}*(1+j) / sqrt(2). Sqrt( ) represents a square root. Preconfigured sequence M is defined as M={−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}.

The present disclosure relates to media access control (MAC) address handling for roaming in a wireless LAN system. According to an embodiment of the present disclosure, a method performed by a station (STA) in a wireless LAN system comprises the steps of: performing an association procedure with a first access point (AP); obtaining a media access control (MAC) address for a roaming group including the first AP; transmitting a roaming request frame including the MAC address for the roaming group to the first AP; and performing roaming to a second A P included in the roaming group on the basis of receiving a roaming response frame for the roaming request frame, wherein the MAC address for the roaming group is common to a plurality of APs included in the roaming group.

A method and device for operating in a wireless LAN system are disclosed. A method performed by a first STA in a wireless LAN system, according to one embodiment of the present disclosure, comprises the steps of: receiving a trigger frame for aggregated physical layer protocol data unit (A-PPDU) transmission from a second STA; and receiving an A-PPDU from the second STA on the basis of the trigger frame, wherein the trigger frame may include first information related to at least one frequency resource unit for latency sensitive (LS) data transmission and second information related to timing for the LS data transmission.

Methods, apparatus, and systems for improving migrations in wireless systems during handover of integrated access and backhaul (IAB) nodes between central units (CU), where one or more user equipment or mobile terminals are connected to an IAB node. The disclosure relates to communicating configuration information for a gradual handover to prevent interference and packet loss.

Single band and multiband wireless antennas are an important element of wireless systems. Competing tradeoffs of overall footprint, performance aspects such as impedance matching and cost require not only consideration but become significant when multiple antenna elements are employed within a single antenna such as to obtain circular polarization transmit and / or receive. Accordingly, it would be beneficial to provide designers of a wide range of electrical devices and systems with compact single or multiple frequency band antennas which, in addition to providing the controlled radiation pattern and circular polarization purity (where required) are impedance matched without substantially increasing the footprint of the antenna and / or the complexity of the microwave / RF circuit interfaced to them, whilst supporting multiple signals to / from multiple antenna elements in antennas employing them. Solutions present achieve this through provisioning one or more capacitive series reactances discretely or in combination with one or more shunt capacitive reactances.

The present disclosure relates to media access control (MAC) address handling for roaming in a wireless LAN system. According to an embodiment of the present disclosure, a method performed by a station (STA) in a wireless LAN system comprises the steps of: performing an association procedure with a first access point (AP); obtaining a media access control (MAC) address for a roaming group including the first AP; transmitting a roaming request frame including the MAC address for the roaming group to the first AP; and performing roaming to a second A P included in the roaming group on the basis of receiving a roaming response frame for the roaming request frame, wherein the MAC address for the roaming group is common to a plurality of APs included in the roaming group.

Disclosed are a method and an apparatus for transmitting or receiving in an enhanced trigger transmission opportunity sharing procedure in a wireless LAN system. According to one embodiment of the present disclosure, a method performed by an STA in a wireless LAN system may comprise the steps of: receiving, from an AP, a trigger frame related to sharing of a TXOP; sending a response frame for the trigger frame to the AP; and performing a frame exchange with another STA in the time interval allocated to the STA based on the trigger frame. A TXOP sharing mode subfield included in the trigger frame may be set to a value indicating a TXOP sharing mode for allocating a time interval such that a frame exchange is performed between the STA and another STA. A duration of a frame transmitted in a time interval allocated to the STA may be set based on an end point of the TXOP or an end point of the frame exchange.

A method and an apparatus having optimized signaling through a multi-link (ML) probe request frame in order to prevent duplicate reception of important update information in a wireless LAN system are presented. Particularly, a reception MLD transmits an ML probe request frame to a transmission MLD through a first link. The reception MLD receives an ML probe response frame from the transmission MLD through the first link. The ML probe request frame includes a profile sub-element of a second transmission STA. The profile sub-element of the second transmission STA includes a critical update requested sub-field and an inclusion flag sub-field. When a first reception STA requests important update information for the second transmission STA, the value of the critical update requested sub-field is set to 1, and the profile sub-element of the second transmission STA further includes a last known BPCC sub-field.

Provided is a high frequency signal receiving unit that receives a first high frequency signal and that generates a first intermediate frequency signal. A packet generating unit generates a packet on the basis of the first high frequency signal. A packet output unit outputs the generated packet to a communication path. A packet receiving unit receives the packet via the communication path. A packet interpreting unit performs synchronization processing for the packet and generates a second intermediate frequency signal. A high frequency signal transmitting unit converts the second intermediate frequency signal into a second high frequency signal and transmits the second high frequency signal. A wireless receiver receives the second high frequency signal and performs positioning or time synchronization on the basis of the second high frequency signal.

A method performed by a wireless transmit / receive unit (WTRU) may compromise: receiving configured grant (CG) information that includes: a configured grant period, an indication of a number of slots for Transport Block over Multiple Slots (TBoMS), and a mapping pattern; determining, for the CG period, a number of repetitions for a transport block (TB) based on (1) available UL slots in the CG period and (2) the number of slots for TBoMS; and on condition that DMRS bundling is disabled, and the determined number of repetitions is greater than 1, transmitting the TB with the determined number of repetitions where segments of the TB are transmitted according to the mapping pattern for each repetition.

Provided are a method and an apparatus for sharing a TXOP for a C-TDMA operation by switching a TXOP holder in multi-AP communication in a wireless LAN system. Specifically, a first AP receives an MU-RTS trigger frame from a second AP. And the first AP sends the CTS frame to the second AP. The first AP receives or senses a CF-end frame from the second AP. When SIFS or PIFS has elapsed after transmission of the CF-end frame, the first AP exchanges a first frame with the first non-AP.

The present disclosure is related to WTRU sensing monitoring in wireless systems. The WTRU may receive sensing configuration information and perform first sensing measurements based on the sensing configuration information. The WTRU may transmit a first report based on the first sensing measurements. The WTRU may receive a request to activate an analyzing function, wherein the analyzing function may evaluate at least one key performance indicator (KPI) criteria. The WTRU may perform, after receiving the request, second sensing measurements to determine at least one KPI. The WTRU may determine, based on the at least one KPI, that the at least one KPI criteria is met. The WTRU may transmit, based on the at least one KPI criteria being met, a second report based on the second sensing measurements.

SOLUTION: A wireless system 10 includes a first base wireless device 14B, a first sensor device 18B that wirelessly communicates with the first base wireless device, and a first wireless power supply device 20D that wirelessly supplies power to the first sensor device by using microwaves, wherein a wireless communication link paired in advance is established between the first base wireless device and the first sensor device, The first sensor device outputs a signal corresponding to the stroke position of the actuator 72, and the sensor element 60 included in the first sensor device includes a magnetic sensor.SELECTED DRAWING: Figure 9

This semiconductor light-receiving element (100) is provided with: an n-type InP substrate (1); an n-type semiconductor layer (2) formed on the n-type InP substrate (1); a multiplication layer (3) which is formed on the n-type semiconductor layer (2), has a layer thickness of 40 nm or more and 170 nm or less, and comprises an InAlAs digital alloy structure in which InAs layers and AlAs layers are alternately laminated; a p-type electric field relaxation layer (4) formed on the multiplication layer (3) and comprising InP or InAlAs; and an InGaAs light absorption layer (5) formed on the p-type electric field relaxation layer (4).

A program, method, architecture, apparatus, system, apparatus, and computer program product including a wireless transmit / receive unit (WTRU) configured to: obtain a plurality of protocol data units (PDUs) including network encoded processing data; associating information including a first identifier of the first PDU set with a first PDU of the plurality of PDUs; associating information including a second identifier of a second PDU set with a second PDU of the plurality of PDUs; transmitting the first PDU via the first bearer based on the first identifier; and transmitting the second PDU via the second bearer based on the second identifier.

Disclosed are a transmission or reception method and apparatus based on a distributed resource unit tone plan in a wireless LAN system. A method performed by a first STA in a wireless local area network (WLAN) system according to an embodiment of the present disclosure may comprise the steps of: generating a PPDU including one or more fields, in which the one or more fields are mapped onto one or more DRUs; and transmitting the PPDU to the one or more second STAs over a bandwidth including the 160 MHz channel. On the basis that the one or more DRUs include a 26-tone DRU, the 26-tone DRU may be one of 72 predefined 26-tone DRUs, and an nth (n = 1, 2,..., 72) 26-tone DRU may be defined as per 72 subcarriers, the nth 26-tone DRU including the nth lowest subcarrier among the available subcarriers in the 160 MHz channel.

A WTRU receives configuration information including a set of reference signals (RSs) for channel state information (CSI) prediction, one or more CSI prediction parameters including one or more prediction window lengths (L) and resource sets, one or more prediction accuracy thresholds, and one or more sets of resources for CSI reporting. The WTRU receives and measures RSs associated with the configured set of RSs, determines predicted CSI values ​​for the resources of the one or more configured prediction windows, and determines preferred CSI prediction parameters as a function of the measurements of the received RSs and the configured prediction accuracy threshold. The WTRU reports the determined preferred CSI prediction parameters and the determined predicted CSI values ​​for one or more subsequent prediction windows to the base station using the configured one or more sets of resources for CSI reporting. Additional embodiments are disclosed.

We provide a driver assistance system that can reduce implementation costs compared to conventional systems. [Solution] A driver assistance system comprising a wireless system that transmits driver assistance information to a train entering a platform, the system comprising a train entry detection device that detects when a train enters a platform, the train entry detection device detects the arrival of a train based on a response wave that is no longer received from the communication station when the train enters a platform.

Disclosed are a method and device for NDP sounding in a wireless LAN system. The method according to an embodiment of the present disclosure may comprise the steps in which: an STA receives an NDP announcement frame from a first AP; and the STA transmits a frame including channel state information to the first AP.

Disclosed are a method and apparatus for indicating a link for a specific type of traffic in a wireless LAN system. The method performed by a first station (STA) in a wireless LAN system, according to an embodiment of the present disclosure, may comprise the steps of: transmitting, to an access point (AP) on the basis of a stream classification service (SCS) identifier (ID), an SCS request frame comprising traffic-related information; in response to the SCS request frame, receiving, from the AP, an SCS response frame based on the SCS ID; and receiving, from the AP, a specific frame for requesting an update of the traffic-related information. Here, the specific frame may comprise updated traffic-related information and information indicating an SCS ID associated with the updated traffic-related information.