982 results about "Media access control" patented technology

A wireless transmit / receive unit (WTRU) may receive a radio resource control (RRC) message comprising configuration information. The configuration information may include one or more preconfigured candidate cell configurations. Each of the preconfigured candidate cell configurations may include a special cell (SpCell) configuration, a secondary cell (SCell) configurations, and / or a candidate cell index. The WTRU may receive a medium access control (MAC) control element (CE). The MAC CE may indicate to apply a first preconfigured candidate cell configuration of the one or more preconfigured candidate cell configurations and an activation state for each SCell in the first preconfigured candidate cell configuration. The WTRU may initiate a handover to a SpCell in the first preconfigured candidate cell configuration based on the indication in the MAC CE. The WTRU may transmit data to the SCells activated by the MAC CE.

A method may include a wireless device receiving resource control (RRC) messages comprising configuration parameters of a layer 1 / layer 2 triggered mobility (LTM) and a configured grant Type 1 for one or more physical uplink shared channel (PUSCH) transmissions of a random access channel (RACH)-less LTM cell switch. The method may also include receiving a medium access control (MAC) control element (CE) triggering an LTM cell switch procedure for the RACH-less LTM cell switch. The method may also include determining not to initiate a random access (RA) procedure based on the RACH-less LTM cell switch being ongoing. The method may also include, based on the RACH-less LTM cell switch being ongoing, not initiating the RA procedure. The method may also include transmitting, using the configured grant Type 1 and for the RACH-less LTM cell switch, a first PUSCH transmission of the one or more PUSCH transmissions.

A wireless device receives a configuration parameter indicating whether the wireless device is allowed to use a first buffer size table, of a plurality of buffer size tables, for a first logical channel group (LCG) of a plurality of LCGs. The wireless device determines a second buffer status report (BSR) medium access control (MAC) control element (CE) with a second variable size, among a plurality of BSR MAC CES including a first BSR MAC CE, with a first variable size, and the second BSR MAC CE. Determining the second BSR MAC CE is based on: the configuration parameter; and an amount of data, of the first LCG, available for transmission, being greater than a buffer size threshold. The wireless device transmits the second BSR MAC CE based on determining the second BSR MAC CE.

A method by which a first device performs wireless communication, and a device for supporting same are provided. The method may comprise the steps of: acquiring a configuration related to inter-UE coordination (IUC) information reporting; initiating an IUC report timer on the basis that the IUC information reporting is triggered; performing listen before talk (LBT); and stopping the IUC report timer on the basis of (i) the generation of an IUC information medium access control (MAC) control element (CE), and on the basis of (ii) the success of the LBT.

A method for operating a user equipment (UE) comprises receiving configuration information including a list of component carriers (CCs) and at least K transmission configuration indicator (TCI) states, where K>1 and each TCI state includes a TCI state identifier (ID) and a quasi co-location information (QCL-Info). The method further includes receiving an activation command via medium access control-control element (MAC-CE) to activate N TCI state IDs from K TCI state IDs, wherein N<K and the activation command is common across the list of CCs, determining a TCI state Ti for a CC i in the list of CCs based on the activated N TCI state IDs, and transmitting an uplink (UL) transmission or receiving a downlink (DL) transmission for the CC i based on a QCL-Info included in the determined TCI state Ti.

A method performed by a mobile device, the method comprising: receiving, from a reader device via a Medium Access Control (MAC) layer, a first message for scheduling a transmission from the mobile device to the reader device; transmitting, to the reader device via the MAC layer, a second message including a part of uplink data in a buffer and first information indicating that the mobile device has remaining of the uplink data transmitted via the MAC layer, based on the first message; receiving, from the reader device via the MAC layer, a further first message for scheduling the transmission of the remaining of the uplink data in the buffer via the MAC layer, upon transmitting the first information; and transmitting, to the reader device via the MAC layer, a further second message including at least a part of the remaining of the uplink data.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may generate a medium access control control element (MAC CE) that includes one or more reports that each indicate one or more cross-link interference or self-interference values. The UE may transmit the MAC CE. Numerous other aspects are described.

A device may determine conditional availability of data for transmission. A device (e.g., in medium access control (MAC), radio link control (RLC), and / or packet data convergence protocol (PDCP) may determine a second amount of data is available for conditional transmission (e.g., for a scheduling request (SR), buffer status report (BSR), and / or multiplexing in a transport block (TB)) as a function of, e.g., the transmission status of a first amount of data multiplexed in a TB, available for transmission, discarded, and / or transmitted. In examples, a device may receive an indication of first data, receive an indication of second data, determine that a dependency exists between the first and second data, determine the second data is unavailable for transmission, determine condition(s), determine an amount of the second data is available for transmission based on satisfaction of the condition(s), and perform transmission processing or transmission of the amount of the second data.

This disclosure provides methods, components, devices and systems for multi-layer signaling for ambient power (AMP) devices. Some aspects enable early differentiation between non-backscatter AMP device types through signaling in AMP downlink physical layer protocol data units (PPDUs). For example, a wireless device receives a first portion of an AMP downlink PPDU indicating an intended STA type (such as an active transmitter or an AMP-enabled device) and selectively receives subsequent portions of the AMP downlink PPDU in accordance with whether the type of the wireless device matches the indicated type. In scenarios in which the types match, the wireless device continues receiving the PPDU. Otherwise, the wireless device ceases reception to conserve energy and processing resources. The first portion may include one or more fields that indicate the intended STA type, may indicate a medium access control (MAC) frame type that implicitly indicates the intended STA type, or both.

Various aspects of the present disclosure generally relate to wireless communication. Some aspects more specifically relate to configuration of downlink and / or uplink quality of service (QoS) based radio link monitoring and prediction and related signaling and procedures. In some aspects, a network node may configure a user equipment (UE) with set(s) of physical (PHY) and / or medium access control (MAC) parameters for QoS radio link monitoring and reporting. Once configured with the parameter sets, the UE may receive a signal from the network node to use a particular set, or may autonomously select a set using traffic requirements. The network node may schedule the UE to send a QoS report in accordance with one or more downlink or uplink measurement and / or prediction results. For example, when the monitored results exceed one or more configured threshold(s), the UE may transmit a report to the network node.

Apparatuses, systems, and methods for configuring different base station sleep modes / states, including triggering UE adaptation to the different base station sleep mode / states, e.g., in 5G NR systems and beyond. A UE may receive, from a base station, configurations for one or more base station sleep modes, e.g., on a per logical channel (LCH) basis, a per medium access control (MAC) entity configuration basis, a per configured grant (CG) configuration basis, and / or a per downlink (DL) semi-persistent scheduling (SPS) configuration basis. The UE determine, based on the one or more base station sleep modes, a base station sleep mode and determine an uplink transmission adaptation based on the determine base station sleep mode.

A method, an apparatus, a terminal, and a medium for processing a sidelink consistent listen before talk failure, are provided. The method for processing a sidelink consistent listen before talk (LBT) failure includes: determining, by a terminal, that the sidelink consistent LBT failure is triggered on a first resource; and performing, by the terminal, a first operation, where the first operation includes at least one of the following: resource selection or resource reselection or resource switching; determining that the first resource is recovered from the sidelink consistent LBT failure, or canceling the sidelink consistent LBT failure triggered on the first resource; and a Media Access Control (MAC) layer of the terminal informs a PHYsical (PHY) layer: the first resource is recovered from the sidelink consistent LBT failure, or canceling the sidelink consistent LBT failure triggered on the first resource.

An embodiment proposes a method for performing wireless communication by a first device. The method may comprise the steps of: selecting a first resource within a first selection window on the basis of first sensing; generating a first medium access control (MAC) protocol data unit (PDU) on the basis of at least one logical channel (LCH) in which hybrid automatic repeat request (HARQ) feedback is enabled; transmitting, to a second device, first sidelink control information (SCI) for scheduling a first physical sidelink shared channel (PSSCH), through a first physical sidelink control channel (PSCCH), on the basis of the first resource; and transmitting, to the second device, second SCI and the first MAC PDU, through the first PSSCH, on the basis of the first resource. For example, random selection of the first resource may not be allowed on the basis of the at least one LCH in which the HARQ feedback is enabled.

A method can include receiving, by a wireless device, configuration parameters of a bearer of the wireless device. The configuration parameters can include a first indication that duplication of packets associated with a first protocol data unit (PDU) set of the bearer is configured. The configuration parameters can also include a second indication that duplication of packets associated with a second PDU set of the bearer is configured. The method can also include receiving a medium access control control element (MAC CE). The MAC CE can include a first control field indicating the duplication of packets associated with the first PDU set being activated. The MAC CE can also include a second control field indicating the duplication of packets associated with the second PDU set being deactivated. The method can further include communicating packets of the bearer based on the MAC CE.

This disclosure describes systems, methods, and devices for secondary cell activation. A device may decode a medium access control (MAC) control element received from a network node, the MAC control element including a request to activate a secondary cell (SCell); perform receiver beam sweeping using a beam sweeping factor less than eight in a frequency range prior to activating the SCell, the receiver beam sweeping including: automatic gain control using the beam sweeping factor; and searching for the SCell using the beam sweeping factor; encode a reference signal received power (RSRP) report to be transmitted, the RSRP report including a synchronization signal block (SSB) prior to activating the SCell; perform a channel status information measurement prior to activating the SCell; encode a report indicative of the channel status information measurement to be transmitted prior to activating the SCell; and activate the SCell.

Methods, apparatus and systems for wireless sensing are described. In one example, a described system in a wireless data communication network comprises: a transmitter configured to transmit a time series of at least one wireless sounding signal (WSS) based on a standard wireless network protocol associated with the wireless data communication network, and a receiver. The wireless data communication network comprises a physical (PHY) layer, a medium access control (MAC) layer, and at least one higher layer. The receiver is configured to: receive the time series of at least one WSS (TSWSS) based on the standard wireless network protocol through a wireless channel of a venue, and perform a plurality of wireless sensing measurements based on the received TSWSS to obtain sensing measurement results based on the standard wireless network protocol. The PHY layer or the MAC layer of the receiver provides the sensing measurement results locally to the at least one higher layer of the receiver based on the standard wireless network protocol. The sensing measurement results are available to the at least one higher layer of the receiver for performing a sensing-based task based on the sensing measurement results.

A terminal according to an aspect of the present disclosure includes: a receiver that receives a list of transmission configuration indication (TCI) states applicable to downlink and uplink; and a controller that determines one or more sets of active TCI states from the list based on one or more medium access control-control elements (MAC CEs), and determines one or more TCI states to be applied to at least one of downlink and uplink signals from the one or more sets based on downlink control information (DCI). According to one aspect of the present disclosure, the TCI state is appropriately controlled.

Systems, methods, processors, and apparatus are provided for determining a unified TCI state in multi transmission reception communication. In one example, a method for a UE includes receiving a configuration of a plurality of transmission configuration indicator (TCI) states and a unified TCI states activation / deactivation medium access control (MAC) control element (CE) to associate TCI codepoints of a downlink control information (DCI) format to the TCI states, each TCI codepoint indicating one or more TCI states; receiving a first single transmission reception point downlink control information (sDCI) including a TCI codepoint of the plurality of TCI codepoints; receiving a second sDCI that schedules a physical uplink shared channel (PUSCH) transmission, wherein the second sDCI indicates one or more of the TCI states associated with the TCI codepoint of the first sDCI; and in response, transmitting the PUSCH based on the second sDCI.

A multi-connection reestablishment method, for use in a first device, and comprising: sending a first message frame, the first message frame comprising: a connection identifier of multiple connections of a first device and a second device, and media access control MAC addresses of the first device, one connection being associated with one MAC address of the first device.

Aspects of the present disclosure are to address on-demand system information transmission. The method includes: receiving from the base station a radio resource control (RRC) message, wherein the RRC message includes one or more sets of configuration parameters for secondary cells; receiving from the base station, a specific Medium Access Control (MAC) Control Element (CE) related to activation of an on-demand Synchronization Signal Block (SSB); and determining based on the specific MAC CE activation of the on-demand SSB in a specific secondary cell. The specific secondary cell is determined based on first information of the specific MAC CE, wherein the first information is associated with a secondary cell index of the specific secondary cell. A specific number of bursts of the on-demand SSBs are transmitted in the secondary cell based on second information of the specific MAC CE.

A method for small data transmission (SDT) in RRC_INACTIVE state and related devices are provided. The method includes receiving a first SDT Timing Advance Command Media Access Control (MAC) Control Element (CE) from the network; starting or restarting Timing Alignment Timer (TAT) upon the reception of a Timing Advance (TA) command carried by the first SDT Timing Advance Command MAC CE, for keeping uplink (UL) time alignment during SDT in RRC_INACTIVE state; and when UL data arriving in UE TX buffer, transmitting SDT to the network while the TAT is running. With this method, UL synchronization / timing maintenance in RRC_INACTIVE state is realized.

A communication control method is a method using a relay user equipment relaying communication between a base station and a remote user equipment. The communication control method includes establishing a connection between the remote user equipment and the relay user equipment, and performing a random access procedure establishing a connection between the remote user equipment and the base station. The performing the random access procedure includes a proxy operation where the relay user equipment, instead of the remote user equipment, performs at least a part of an operation to be performed by a Medium Access Control (MAC) layer in the random access procedure.

Proposed is a method for a first device to perform wireless communication according to an embodiment. The method may comprise the steps of: acquiring an SL DRX configuration including information related to a sidelink discontinuous reception (SL DRX) cycle and information related to an active time; transmitting first sidelink control information (SCI) to a second device through a first physical sidelink control channel (PSCCH), wherein the first sidelink control information (SCI) is for scheduling a first physical sidelink control channel (PSSCH); transmitting second SCI and a first medium access control (MAC) protocol data unit (PDU) to the second device through the first PSSCH; determining a first physical sidelink feedback channel (PSFCH) resource in the first PSFCH slot on the basis of an index of a slot related to the first PSSCH and an index of a subchannel; and receiving a first hybrid automatic repeat request (HARQ) feedback for the first MAC PDU, the first HARQ feedback being received from the second device on the basis of the first PSFCH resource. For example, the first PSFCH slot may be included in an inactive time at the time of transmission of the first MAC PDU. For example, the first PSFCH slot may be included in an active time at the time of reception of the first HARQ feedback.

A system and method are provided for generating a pairwise transient key security association (PTKSA) by: providing a first media access control (MAC) address that is shared by multiple access points (APs), the first MAC address corresponding to an infrastructure comprising the multiple APs, and each AP of the multiple APs having a respective AP MAC address; providing a second MAC address to a station (STA); and establishing a secure link between the STA and the infrastructure using the first MAC address and the second MAC address to derive a pairwise transit key (PTK) for the secure link, wherein the secure link is between the STA and the multiple APs.

A terminal according to one aspect of the present disclosure includes: a receiving section that receives a Medium Access Control Control Element (MAC CE) related to cell switching; and a control section that judges timing advance (TA) to apply to UL transmission, based on information included in the MAC CE. The MAC CE includes at least one of a field related to cell switching and a field related to the TA. According to one aspect of the present disclosure, even when inter-cell mobility is performed, communication can be appropriately controlled.

Proposed is an operation method of a first device (100) in a wireless communication system. The method may comprise the steps of: acquiring information related to one or more first resources; carrying out channel sensing for a channel access procedure (CAP) related to the one or more first resources; and determining whether to trigger a reevaluation procedure or preemption procedure related to the one or more first resources, wherein the reevaluation or preemption of a resource, among the one or more first resources, for which the result of channel sensing for the related CAP is not idle is not transferred to a medium access control (MAC) layer.

This disclosure provides methods, devices and systems that facilitate mobility of wireless communication devices configured for multi-link operation (MLO). Particular aspects more specifically relate to facilitating fast basic service set (BSS) transitions by wireless communication devices that support MLO. For example, some aspects provide support for station (STA) multi-link device (MLD) roaming between access point (AP) MLDs, from an AP MLD to a non-MLO AP, or from a non-MLO AP to an AP MLD. In some aspects, a STA MLD may be configured to use a medium access control (MAC) service access point address (MAC-SAP address) of the AP MLD when re-associating or communicating with a legacy AP or with an AP MLD. In such aspects, the MAC-SAP address may be used by all STAs of the non-AP MLD for fast BSS transitions.

A cellular base station (BS) which determines an aperiodic sounding reference signal (SRS) triggering offset configuration specifying an offset between an aperiodic SRS trigger received by a user equipment (UE) and transmission of the SRS by the UE. The cellular base station may determine that the SRS triggering offset should be adjusted. In response, the cellular base station may transmit signaling to the UE specifying a new value for the aperiodic SRS triggering offset. The new SRS triggering offset value may be partly based on a minimum timing offset for the UE and may be contained in a medium access control (MAC) control element (CE) or in downlink control information (DCI). Additionally, the new triggering offset value may be applicable for a plurality of component carriers or bandwidth parts. The cellular base station may also determine a new triggering offset value due to conflicts regarding the AP-SRS transmission.

The disclosure relates to a 5th-generation (5G) or 6th-generation (6G) communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a wireless communication system is provided, the method including receiving, from a base station (BS), a radio resource control (RRC) message including configuration information related to cross link interference (CLI), identifying a measured CLI quantity value based on the configuration information and at least one measurement resource received from the BS, and transmitting, to the BS, a medium access control (MAC) control element (CE) including the measured CLI quantity value via a physical uplink shared channel (PUSCH).

A wireless device triggers, based on not having uplink shared channel (UL-SCH) resources to transmit a beam failure recovery (BFR) medium access control (MAC) control element (CE), a scheduling request (SR). The wireless device receives a downlink control information (DCI) indicating an uplink grant. The uplink grant indicates one or more UL-SCH resources for the BFR MAC CE. The wireless device cancels the SR based on transmitting a MAC protocol data unit (PDU) comprising the BFR MAC CE.